WO2017026113A1 - 柱と梁との接合構造及び方法 - Google Patents
柱と梁との接合構造及び方法 Download PDFInfo
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- WO2017026113A1 WO2017026113A1 PCT/JP2016/003614 JP2016003614W WO2017026113A1 WO 2017026113 A1 WO2017026113 A1 WO 2017026113A1 JP 2016003614 W JP2016003614 W JP 2016003614W WO 2017026113 A1 WO2017026113 A1 WO 2017026113A1
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- Prior art keywords
- column
- plate
- diaphragm
- divided
- steel pipe
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
- E04B1/5806—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile
- E04B1/5812—Connections for building structures in general of bar-shaped building elements with a cross-section having an open profile of substantially I - or H - form
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2406—Connection nodes
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2415—Brackets, gussets, joining plates
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2418—Details of bolting
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2448—Connections between open section profiles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2454—Connections between open and closed section profiles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B2001/2466—Details of the elongated load-supporting parts
- E04B2001/2478—Profile filled with concrete
Definitions
- the present invention relates to a column-to-beam joining structure and method for joining an H-shaped steel beam to a column with an outer diaphragm.
- a diaphragm construction method is often applied to steel pipe columns constituting a building structure to reinforce and prevent deformation everywhere.
- the through diaphragm method which is one of such diaphragm methods, is assembled by cutting a steel pipe column at the upper and lower flange positions of the H-shaped steel beam, and then inserting the diaphragm and welding it to the steel pipe column.
- the H-shaped steel beam is preliminarily cut out as a beam bracket for the portion to be joined to the steel pipe column, and is welded to the diaphragm through its upper and lower flanges, and is attached by welding the web to the skin plate of the steel pipe column.
- the beam bracket and the H-shaped steel beam attached to the diaphragm are joined to each other by high-strength bolt friction joining.
- a high blade method (registered trademark) has been put into practical use.
- this high blade method registered trademark
- two sets of cast steel integrated outer diaphragms (high blades) for upper flange and lower flange are inserted into a steel pipe column.
- the upper and lower flanges of the H-shaped steel beam are fixed to each outer diaphragm by welding.
- a beam bracket for joining to the steel pipe column is cut out.
- the upper and lower flanges of the beam bracket are welded to the high blade, and the web of the beam bracket is welded to the rib plate attached to the column skin plate.
- the beam bracket and the H-shaped steel beam are joined to each other by high-strength bolt friction joining.
- various shapes and the like having excellent stress transferability have been studied.
- a high-strength bolt tension joining method has also been put into practical use.
- the steel pipe column and the H-shaped steel beam are connected by split tee or high-strength bolt tension bonding via an end plate welded to the short surface of the H-shaped steel beam.
- the split tee is used, the flange and the steel plate column skin plate are joined by high strength bolt tension joining, and the split tee web and the flange of the H-shaped steel beam are joined by high strength bolt friction joining.
- the web of the H-shaped steel beam is friction-joined with a rib plate attached to a steel pipe column as needed.
- Patent Document 2 discloses an example in which the outer diaphragm is configured by combining column-beam joint hardware such as a split diaphragm. According to the technique disclosed in Patent Document 2, a method is adopted in which a beam-to-column joint is joined by a bolt without welding to a steel pipe column. In addition, the inside of the column beam joint metal is filled with a filler such as mortar resin, for example, to transmit stress by the adhesive force of the filler and the shear strength of the bolt.
- the technique disclosed in Patent Document 2 has an advantage that an increase in production labor and the like can be prevented by eliminating the need for welding work when attaching to a steel pipe column.
- Patent Document 2 since a process of filling a filler such as a mortar resin is included, the production labor is increased correspondingly, and the material cost of the filler is required. There was a problem.
- the present invention has been devised in view of the above-described problems, and the object of the present invention is to provide a column-to-beam joint structure and method in which an H-shaped steel beam is joined to a column by an outer diaphragm.
- the diaphragm can be attached to the column without using welding, reducing the manufacturing effort and cost, shortening the construction period, and also providing excellent stress transmission performance during an earthquake. It is to provide a joint structure and method of a beam.
- the present inventors when joining an H-shaped steel beam to a column with an outer diaphragm, use a beam plate in a divided diaphragm obtained by dividing the outer diaphragm into a plurality of flanges in the H-shaped steel beam. At the same time, the column plate provided at the end of the beam plate is brought into contact with the column, and the joint surface between the divided diaphragms is arranged near the corner portion of the column.
- the column-beam connection structure is a column-beam connection structure in which an H-shaped steel beam is bonded to a column by an outer diaphragm.
- the outer diaphragm includes a plurality of divided diaphragms,
- the divided diaphragm has a column plate that is in contact with the column, and among the plurality of divided diaphragms, the divided diaphragm arranged along the H-shaped steel beam is formed on a flange of the H-shaped steel beam.
- Each column surface of the column has a beam plate that is attached and has the column plate provided at the end thereof, and the joint surface between the divided diaphragms is in the vicinity of the corner portion of the column.
- the column-beam joint structure according to the second aspect of the present invention is the structure according to the first aspect of the present invention, wherein the split diaphragms are provided with tensile joints erected upward and / or downward from the surface of the beam plate. It is characterized by being contacted.
- the bolt as the joining member is inserted between the tensile joints that are in contact with each other between the adjacent divided diaphragms, and the tip thereof. Is screwed with a nut.
- the column-beam joint structure according to the fourth invention is characterized in that, in the third invention, the tensile joint and the joint member are separated from a flange in the H-shaped steel beam.
- the joining structure of the column and the beam is located on the side farther from the pillar than the joining member between the tensile joints that are in contact with each other between the adjacent divided diaphragms.
- a stress transmission mechanism for transmitting a shearing force is provided.
- the split diaphragm is a means for removing welding or a means for removing adhesion to the pillar via the pillar plate. It is characterized by being fastened and fixed by.
- the outer diaphragm is disposed around the column while the column plate is in contact with the column.
- a space is formed between the joint surfaces of the divided diaphragms, and the contact pressure is generated by tightening and fixing the divided diaphragms so as to reduce the distance by the joint member.
- connection structure between a column and a beam according to the eighth invention is any one of the first to seventh inventions, wherein the outer diaphragm is provided for the upper and lower flanges of the H-shaped steel beam.
- the beam plate is configured such that when the tensile force from the H-shaped steel beam is transmitted, the beam plate The contact pressure from the column plate provided at the end to the column surface of the column is reduced, and the tensile force is transmitted from the column plate to another divided diaphragm having other column plates facing each other.
- the divided diaphragm applies a compressive force to the column from the other column plate based on the transmitted tensile force.
- the column plate has a width in the height direction that is wider on the corner side of the column and more on the center side of the column. It is characterized by being configured narrowly.
- the column-to-column connection structure according to the eleventh aspect of the invention is characterized in that a greater contact pressure is applied to the column surface near the corner portion from the column plate.
- a column / beam joining structure in which a split diaphragm obtained by dividing the outer diaphragm into a plurality of parts is brought into contact with the column in a method of joining a column and a beam to an H-shaped steel beam by an outer diaphragm.
- the split diaphragm arranged along the H-shaped steel beam among the plurality of split diaphragms is attached to a flange of the H-shaped steel beam by attaching a beam plate provided with the column plate at an end,
- a beam plate provided with the column plate at an end
- the outer diaphragm can be installed in a stable state based on mechanical attachment means without performing welding joint to the steel pipe column. Based on the friction force exerted between the outer diaphragm and the outer diaphragm, it is possible to prevent the outer diaphragm from dropping due to gravity. In addition, in the event of an earthquake, it is possible to prevent the outer diaphragm from moving in a vertical direction due to a force acting in the vertical direction and moving significantly as a problem in terms of force transmission. In particular, since the outer diaphragm can be fixed to the steel pipe column without using welding, the work labor involved in the production can be reduced.
- the web in the so-called H-shaped steel beam may be configured not to be directly joined between the steel pipe columns, and the beam bracket as in the prior art may not be provided between the web and the steel pipe columns.
- the construction of the beam bracket which was mainly used in the prior art, is no longer required, so the construction cost can be greatly reduced based on the reduction of production labor, and the construction period can be shortened. It becomes.
- the beam bracket since the beam bracket is not necessary, it is not necessary to attach the beam bracket to the steel pipe column in advance, and it is possible to transport the steel pipe as it is, thereby improving transport efficiency. In addition, it is possible to ensure stable quality of the joint structure.
- the necessity for considering the design for improving impact resistance etc. is also relieved considerably, therefore It becomes possible to improve the freedom degree of design.
- FIG. 1 is a perspective view of a steel pipe column / beam joining structure 10 to which the present invention is applied
- FIG. 2 is a plan sectional view thereof
- FIG. 3 is a side view thereof.
- the outer diaphragm 1 is arranged so that the H-shaped steel beam 3 is orthogonal to the column surface of the steel pipe column 5.
- the present invention is not limited to this, and the H-shaped steel beam 3 may be arranged to be inclined in the vertical direction or the horizontal direction with respect to the column surface of the steel pipe column 5.
- the steel pipe column 5 is a steel pipe having a rectangular cross section and having a predetermined plate thickness applied as a column for a building structure.
- the steel pipe column 5 plays a role of preventing the collapse and collapse of the building structure while supporting the weight of the building structure itself even in a large shake caused by a large earthquake.
- a case where the steel pipe column 5 has a rectangular cross section such as a square cross section, a rectangular cross section, etc. will be described as an example.
- the corner portion 5a in the steel pipe column 5 may be formed in an arc shape or may be substantially a right angle.
- the H-shaped steel beam 3 forms a framework of a building structure together with the steel pipe column 5, and includes an upper flange 31 provided at the upper end of the web 32, and a lower flange 33 provided at the lower end of the web 32. It consists of H-section steel which has.
- the H-shaped steel beam 3 is attached via the outer diaphragm 1 so as to be orthogonal to the column surface of the steel pipe column 5.
- FIG. 1 the case where four H-shaped steel beams are arranged at 90 ° intervals with respect to the steel pipe column 5 is shown, but the present invention is not limited to this.
- the H-shaped steel beam 3 is made plastic by yielding before the steel pipe column 5 even during a large stress action such as a large earthquake as will be described later, thereby preventing the steel pipe column 5 from being plasticized. Or by reducing it, it works to prevent the collapse of the building structure.
- the outer diaphragm 1 is composed of a pair of upper and lower via an H-shaped steel beam 3 as shown in FIG.
- the upper outer diaphragm 1 is attached from the upper side of the upper flange 31, and the lower outer diaphragm 1 is attached from the lower side of the lower flange 33.
- the outer diaphragm 1 is configured by combining a plurality of divided diaphragms 2. That is, in a plan view, the outer diaphragm 1 is arranged so as to surround the periphery of the steel pipe column 5 by the divided diaphragm 2.
- the outer diaphragm 1 is premised on the use of steel, stainless steel, cast steel, spheroidal graphite cast iron or the like, but is not limited thereto, and any other metal such as an aluminum alloy other than steel is used. You may do it.
- the split diaphragm can be a factory welded assembly product with strict welding quality control.
- the split diaphragm 2 functions as one outer diaphragm 1 when combined with each other.
- the divided diaphragm 2 has a configuration in which the outer diaphragm 1 is equally divided into four parts, but the present invention is not limited to this. May be. Moreover, it is not limited to the shape divided
- FIG. 4 is a plan view of one divided diaphragm 2
- FIG. 5 is a perspective view thereof.
- the split diaphragm 2 includes a beam plate 22 that is in contact with the upper flange 31 or the lower flange 33 in the H-shaped steel beam 3 and a column plate 23 that is in contact with the steel pipe column.
- bolt holes 127 for bolting the upper flange 31 or the lower flange 33 in the H-shaped steel beam 3 are drilled in advance.
- a plurality of bolt holes 127 are provided along the longitudinal direction C and the width direction.
- the beam plate 22 has a straight front end portion 22a and a side end portion 22b whose diameter is expanded in an arc shape from the front end portion 22a.
- the side end 22b may be formed with a rib (not shown) formed in a convex shape upward and / or downward.
- the width in the W direction of the front end portion 22 a of the beam plate 22 may be substantially the same as the width in the W direction of the upper flange 31 or the lower flange 33 of the H-shaped steel beam 3.
- one beam plate 22 is sized so as to be able to join only one upper flange 31 or one lower flange 33 in the H-shaped steel beam 3.
- the beam plates in the two or more divided diaphragms 2 adjacent to each other with respect to one upper flange 31 or one lower flange 33 are not joined.
- the side edge part 22b in the beam plate 22 is not limited to the case where the diameter is expanded in an arc shape from the front end part 22a, and may be any other diameter-enlarged shape.
- the contact surface of the beam plate 22 with the flanges 31 and 33 is subjected to a high friction coefficient treatment as necessary.
- a high friction coefficient increasing process a metal spraying process, an inorganic zinc rich coating process, or the like is appropriately selected.
- a thin metal plate that has been processed with a high friction coefficient may be inserted between the beam plate 22 and the flanges 31 and 33.
- Such a beam plate 22 is attached to each of the H-shaped steel beams 3 arranged at intervals of 90 ° in plan view.
- the column plate 23 is provided at the end of the beam plate 22 in the C direction.
- the width in the W direction of the column plate 23 is configured to be wider than the width in the W direction at the front end portion 22 a of the beam plate 22.
- the beam plate 22 is gradually expanded in diameter from the front end portion 22 a and reaches the column plate 23.
- the plate surface of the column plate 23 extends in a direction perpendicular to the plate surface of the beam plate 22.
- the width in the W direction of the column plate 23 is substantially the same as the width of each column surface in the steel pipe column 5 or wider than the width of each column surface in the steel tube column 5. Further, as shown in FIG.
- the column plate 23 includes an upper column plate portion 23a extending upward from the end portion of the beam plate 22 and a lower column plate extending downward from the end portion of the beam plate 22. And a portion 23b.
- the column plate 23 can be fixed by being brought into contact with the surface of the steel pipe column 5.
- the column plate 23 may be configured by only one of the upper column plate portion 23a and the lower column plate portion 23b.
- the column plate 23 may be subjected to a non-slip treatment on the contact surface with the steel pipe column 5 as necessary.
- a blast process, a coating process, a metal spray process, a concavo-convex process by knurling or cutting, and the like are appropriately selected.
- tensile joints 21 are provided.
- the column plate 23 and the tensile joint 21 may be formed by bending a steel plate integrated with each other, or separate steel plates may be used. You may make it join through welding etc.
- the tensile joint 21 is extended from the extending direction (W direction) of the column plate 23 in a plan view in a direction bent in a direction of approximately 45 ° in a plan view.
- the beam plate 22 that is gradually expanded in diameter from the front end portion 22a is continuous from the lower side.
- the tensile joint portion 21 may include an upper tensile joint portion 21 a that extends upward from the beam plate 22 and a lower tensile joint portion 21 b that extends downward from the beam plate 22. These tensile joint portions 21 are provided with penetrating bolt holes 126. The bolt hole 126 may be provided for each of the upper tensile joint 21a and the lower tensile joint 21b when the tensile joint 21 is constituted by the upper tensile joint 21a and the lower tensile joint 21b. .
- bond_joining part 21 may differ in the plate
- the surface of the column plate 23 is substantially perpendicular to the surface of the beam plate 22.
- the corner portion at the joint portion between the column plate 23 and the beam plate 22 is substantially vertical, stress is concentrated on the corner portion.
- R may be provided at the corner.
- the tensile joint portion 21 as a joint surface between the adjacent divided diaphragms 2 is configured to be positioned in the vicinity of the corner portion 5 a of the steel pipe column 5.
- the tensile joint portions 21 are formed at both ends of the column plate 23 in the W direction as described above. Since the width of the column plate 23 in the W direction is substantially the same as the width of each column surface of the steel pipe column 5, the tensile joints 21 positioned at both ends of the column plate 23 in the W direction are corners of the steel tube column 5. It will be located in the vicinity of the part 5a.
- each tensile joint 21 is extended from the extending direction (W direction) of the column plate 23 in a plan view in a direction bent in a direction of approximately 45 ° in a plan view, and therefore, the tensile joint between adjacent divided diaphragms 2. 21 are substantially parallel to each other.
- the space between the tensile joints 21 in the divided diaphragms 2 adjacent to each other is formed.
- at least the distance e (e 1 , E 2 , e 3 , e 4 ) are designed to satisfy e ⁇ 0.
- the outer diaphragm 1 is attached.
- the bolts 25 are inserted into the bolt holes 126 formed in the tensile joints 21 positioned in parallel to each other, and the screw portions of the bolts 25 are fastened and fixed by the nuts 26.
- the adjacent divided diaphragms 2 gradually approach each other via the tensile joint portion 21.
- the tensile joint portions 21 of the adjacent divided diaphragms 2 come into contact with or come close to each other, and e described above is reduced.
- e is of course 0, but e> 0, so that the divided diaphragms 2 may be non-contact with each other.
- the outer diaphragm 1 and the H-shaped steel beam 3 are attached.
- Bolts 41 are inserted into bolt holes 127 formed in the beam plate 22 in the divided diaphragm 2.
- bolt holes (not shown) are also formed in advance in the upper flange 31 or the lower flange 33 to be attached to the beam plate 22, and the bolt holes 127 are inserted through these bolt holes 127.
- the nut 42 is screwed onto the screw portion of the bolt 41 protruding from the flanges 31 and 33 and tightened. Thereby, the beam plate 22 and the flanges 31 and 33 in the H-shaped steel beam 3 are firmly attached and fixed to each other.
- the end of the beam plate 22 and the ends of the flanges 31 and 33 of the H-shaped steel beam 3 are butted against each other and welded. You may make it fix by doing. Further, the beam plate 22 and the flanges 31 and 33 may be overlapped with each other and fixed by fillet welding, or may be replaced by any other joining means.
- one beam plate 22 has a size that can be joined only to one upper flange 31 or one lower flange 33. That is, one beam plate 22 and one upper flange 31 or one lower flange 33 have a one-to-one correspondence with each other. Therefore, as shown in FIG. 7, the beam plate 22 can be bolted to the upper flange 31 or the lower flange 33 in the H-shaped steel beam 3 in advance. That is, after integrating the divided diaphragm 2 on the H-shaped steel beam 3 in advance, these may be brought into close contact with the steel pipe column 5 in the direction of the arrow in the figure. Thereby, the construction of the joint structure 10 is simplified, and a rapid construction can be realized.
- the split diaphragm 2 into the H-shaped steel beam 3 in advance in the factory, and transport it to the site in that state for attachment. It is also possible to improve the efficiency of on-site construction.
- the joining between the divided diaphragms 2 is performed based on only so-called mechanical joining members such as bolts, without using any welding joining.
- any other joining member may be used as an alternative to joining with the bolts 25 and 41.
- the joining between the divided diaphragms 2 and the joining of the beam plate 22 with the upper flange 31 and the lower flange 33 may be performed in any order.
- the outer diaphragm 1 can be installed in a stable state without performing welding joint to the steel pipe column 5, and can be prevented from falling based on gravity or the like.
- the outer diaphragm 1 can be fixed to the steel pipe column 5 without using welding, it is possible to reduce the work labor involved in the production.
- labor costs necessary for maintaining the quality of welds and costs for various equipment such as inspection devices can be reduced, and the production period can be shortened. For this reason, construction with reduced energy consumption can be performed, and an environment-friendly joining method can be achieved.
- the web 32 in the so-called H-shaped steel beam 3 is not directly joined to the steel pipe column 5, and no beam bracket as in the prior art is provided between the web 32 and the steel pipe column 5. It is configured.
- the configuration of the beam bracket in the prior art becomes unnecessary, it is possible to greatly reduce the construction cost based on the reduction of the production labor, and the construction work period can be shortened.
- the beam bracket is not necessary, it is not necessary to attach it to the steel pipe column 5 in advance, and it can be transported in the state of the steel pipe, so that the transportation efficiency can be improved.
- it is set as the structure which excluded welding as much as possible, it becomes easy to ensure the stable quality of the joining structure 10.
- the tensile force T when the tensile force T based on the axial force acts on the joint structure 10, the tensile force T is first transmitted through the flange 31 (33) in the H-shaped steel beam 3.
- the tensile force T from the flange 31 (33) is transmitted to the beam plate 22 in the split diaphragm 2.
- the column plate 23 connected thereto is also pulled in that direction.
- the contact pressure F originally applied to the steel pipe column 5 from the column plate 23 is weakened.
- the steel pipe column 5 and the column plate 23 are merely brought into contact with each other, and are not directly coupled through other coupling means or welding joints. For this reason, the tensile force T does not act directly on the steel pipe column 5 via the beam plate 22 and the column plate 23.
- the beam plate 22 is gradually enlarged from the front end portion 22 a and is provided with an R so as to reach the column plate 23.
- the width of the beam plate 22 deployed around the steel pipe column 5 is widened, the transmission path of the forces T a and T b can be made wider, and smooth stress transmission can be achieved. It becomes possible. As a result, the path through which the forces T a and T b are transmitted is not locally narrowed or bent sharply, and the stress concentration can be kept small. As a result, it is possible to ensure the structural stability of the joint structure 10 itself.
- the column plate 23 provided on the beam plate 22 to which the initial tensile force T has been transmitted and the column plate 23 facing each other through the steel pipe column 5 are exactly the same as those shown in FIG. C c acts toward the steel pipe column 5.
- This force C c is in the same direction as the tensile force T transmitted from the beam plate 22 and becomes a compressive force C c acting from the received column plate 23 toward the steel pipe column 5. That is, the tensile force T is generated from the facing column plate 23 to the steel pipe column 5. Is converted into a compressive force C c acting on the. From the facing column plate 23 to the steel pipe column 5 In contrast, the contact pressure based on the tightening by the above-described joining member is originally acting, but in addition to this, a compressive force Cc is further applied.
- the steel pipe column 5 and the column plate 23 are simply brought into contact with each other, so that the tensile force T is directly applied to the steel tube column via the beam plate 22 and the column plate 23. 5 so as not to act on, whereas the tensile force T of the minute becomes possible to propagate to another, and is capable converted to compressive force C c at the dividing diaphragm 2 which ultimately face.
- the compressive force P based on the axial force acts in the joint structure 10
- the compressive force P is transmitted via the flange 31 (33) in the H-shaped steel beam 3 as shown in FIG.
- the compressive force P from the flange 31 (33) is transmitted to the beam plate 22 in the split diaphragm 2.
- the column plate 23 connected thereto is also pressed in that direction.
- the contact pressure based on the tightening by the above-described joining member is originally applied from the column plate 23 to the steel pipe column 5, but in addition to this, a compressive force P is further applied.
- the joining structure 10 to which the present invention is applied transmits the tensile force T and the compressive force P directly to the steel pipe column 5 as the tensile force regardless of whether the tensile force T or the compressive force P is applied via the beam plate 22. Instead, it can be transmitted as a compression force. For this reason, even when the bending moment M in any direction is loaded on the H-shaped steel beam 3 based on the seismic force, it can be transmitted to the steel pipe column 5 as a compressive force.
- the steel pipe column 5 to which the compressive force is applied stays in the substantially elastic deformation region without large out-of-plane deformation at the joint portion. It will be a thing. As a result, it becomes possible to prevent plasticization due to a tensile force being applied to the steel pipe column 5. Moreover, while preventing the plastic deformation of the steel pipe column 5, it is possible to prevent collapse of the building structure by first plasticizing the H-shaped steel beam 3 to which a tensile force is applied. For this reason, in order to prevent plastic deformation of the steel pipe column 5, it is not necessary to increase the plate thickness of the steel pipe column 5, which leads to reduction of the material cost of the steel material.
- the tensile joint portion 21 is extended from the extending direction (W direction) of the column plate 23 in a plan view to a direction bent in a direction of approximately 45 ° in a plan view. For this reason, even when the ends of the flanges 31 and 33 in the H-shaped steel beam 3 are brought close to the steel pipe column 5, the flanges 31 and 33 are separated from the tensile joint 21 and interfere with each other. Disappears. Similarly, joint members such as bolts 25 and nuts 26 that fasten the tensile joints 21 that are brought into contact with each other are also separated from the flanges 31 and 33 that are close to the steel pipe column 5 and may interfere with each other. Disappear.
- the H-shaped steel beam 3 can be brought closer to the column surface of the steel pipe column 5.
- the load acting on the outer diaphragm 1 is reduced based on the bending moment of the H-shaped steel beam 3 shown in FIG. 8 by bringing the H-shaped steel beam 3 closer to the column surface of the steel pipe column 5.
- the plate thickness of each plate constituting the outer diaphragm 1 can be reduced, so that the degree of design freedom increases, and as a result, the manufacturing cost of the outer diaphragm 1 as a member can be kept low.
- FIG. 11 shows an example in which the joint structure 10 is applied to side portions and corner portions in a building structure.
- FIG. 11A is an example in which three H-shaped steel beams 3 are attached to the steel pipe column 5 in a T shape in plan view
- FIG. This is an example in which the H-shaped steel beam 3 is attached in an L shape in plan view.
- the H-shaped steel beam 3 may be arranged to be shifted with respect to the center of the steel pipe column 5 from the viewpoint of taking a wider room of the building structure. Accordingly, the divided diaphragms 2 do not have a uniform shape.
- one beam plate 22 and one upper flange 31 or one lower flange 33 are configured in a one-to-one correspondence with each other. It is possible to easily cope with the problem by decentering the position toward one of the W directions.
- the shape of the split diaphragm 2 that is in contact with the column surface on which the H-shaped steel beam 3 is not provided is not particularly limited, but the beam plate 22 to be attached to the flanges 31 and 33 is made small. Alternatively, the beam plate 22 itself may be omitted. That is, according to the present invention, at least when the H-shaped steel beam 3 in the steel pipe column 5 is brought into contact with the column surface to be joined, the beam plate 22 attached to the flanges 31 and 33 in the H-shaped steel beam 3 is provided. Good thing.
- the divided diaphragm 2 arranged along the H-shaped steel beam 3 is the only beam of the divided diaphragm arranged along the H-shaped steel beam among the plurality of divided diaphragms. It may have a plate 22.
- the beam plate 22 may be omitted when the H-shaped steel beam 3 in the steel pipe column 5 is brought into contact with an unjoined column surface. Even in the split diaphragm 2 that is in contact with the column surface on which the H-shaped steel beam 3 is not provided, a bolt 25, a nut 26, and the like are applied so that contact pressure acts from the column plate 23 to the column surface of the steel pipe column 5.
- a stress transmission mechanism 79 for transmitting a shearing force between the tensile joining portions 21 is provided. May be. As shown in FIG. 12 (b), when a tensile force T is applied from the H-shaped steel beam 3, the direction of the tensile force T described above is approximately 45 ° with respect to the pulling direction between the bolt 25 and the nut 26. Therefore, the shearing force ⁇ acts between the tensile joints 21 in accordance with the load of the tensile force T. The stress transmission mechanism 79 transmits a shearing force ⁇ acting between the tensile joints 21 in contact with each other.
- the stress transmission mechanism 79 resists the tensile joints 21 that are to be displaced in the shearing direction based on the shearing force ⁇ . As a result, it is possible to suppress the displacement between the divided diaphragms 2 and to ensure the rigidity and proof strength between the tensile joints 21 that are in surface contact with each other. As a result, the shearing force applied to the bolt 25 can be reduced.
- the stress transmission mechanism 79 is provided on the side farther from the steel pipe column 5 than the bolt 25.
- the stress transmission mechanism 79 may be configured by a pin inserted into a hole formed when the tensile joint portions 21 are brought into contact with each other.
- the stress transmission mechanism 79 may be formed into a concavo-convex shape that can be fitted to each other, for example. Since the stress transmission mechanism 79 in which such uneven shapes are fitted to each other is provided between the tensile joints 21, the shearing force that can be transmitted between the tensile joints 21 is increased, and the shearing force applied to them is increased. Can be effectively transmitted.
- the stress transmission mechanism 79 is not limited to the above-described concavo-convex shape, and may have any shape as long as it can transmit the mutual shear force. Moreover, although the stress transmission mechanism 79 may be provided in any location of the tensile joining part 21, it is desirable to be provided outside the bolt 25 and the nut 26 as shown in FIG. The reason is that when a tensile force is applied to the bolt 25 and the nut 26, a larger compressive force is applied to the outside of the bolt 25 and the nut 26 due to the action of the lever reaction force. This is because high shear resistance can be expected.
- so-called high-strength bolt tension joining may be performed between the bolt 25 and the nut 26.
- a tensile force is applied to the bolts 25 and nuts 27 as a result of the above-described tensile force T being loaded, these can be absorbed and the split diaphragm 2 is prevented from being displaced. It becomes possible to do.
- the present invention it is possible to perform the assembly centering on the bolt joint without using the welding joint, so that it is possible to combine the high-strength bolt joint and absorb the force generated in various places. As a result, it is possible to improve the yield strength of the entire joint structure 10 against an earthquake or the like.
- the outer diaphragm 1 as described above is attached to the upper flange 31 and the lower flange 33 of the H-shaped steel beam 3, respectively. Therefore, when a bending moment based on vibration is applied to the H-shaped steel beam 3 during an earthquake, it is possible to expect the above-described effects on the upper flange 31 side and the lower flange 33 side.
- FIGS. 13 and 14 show other variations of the stress transmission mechanism 79.
- FIG. 13A is an example in which the cross-sectional shape of the stress transmission mechanism 79 is circular
- FIG. 13B is an example in which the cross-sectional shape of the stress transmission mechanism 79 is elliptical
- FIG. These are examples in which the cross-sectional shape of the stress transmission mechanism 79 is rhombus
- FIG. 13D is an example in which the cross-sectional shape of the stress transmission mechanism 79 is rectangular
- 14A is an example in which the cross-sectional shape of the stress transmission mechanism 79 is square
- FIG. 14B is an example in which the stress transmission mechanism 79 having a triangular cross-sectional shape is integrated with the tensile joint 21.
- FIG. 13A is an example in which the cross-sectional shape of the stress transmission mechanism 79 is circular
- FIG. 13B is an example in which the cross-sectional shape of the stress transmission mechanism 79 is elliptical
- FIG. These are examples in which
- FIGS. 14B and 14C are examples in which a stress transmission mechanism 79 having a trapezoidal cross-sectional shape is integrated with the tensile joint 21.
- the stress transmission mechanism 79 and the tensile joint portion 21 may be configured as separate members.
- each of the stress transmission mechanisms 79 having a circular cross-section, a cross-sectional ellipse, a cross-sectional rhombus, a cross-sectional rectangle, and a square cross-section is formed on the contact surface of the tensile joint 21 where the centers of these shapes are in surface contact with each other.
- it is desirable to arrange to pass it is not limited to this.
- the stress transmission mechanism 79 having a triangular cross section in FIG. 14B and the stress transmission mechanism 79 having a trapezoidal cross section in FIG. Although it is desirable to be disposed so as to pass on the contact surface in the joint portion 21, it is not limited to this.
- FIG. 15 shows an example in which the joining structure 10 to which the present invention is applied is joined to the H-shaped steel beam 3 based on so-called two-surface friction welding.
- the split diaphragm 20a is attached to the upper surface and the split diaphragm 20b is attached to the lower surface of the flanges 31 and 33 of the H-shaped steel beam 3, respectively.
- the divided diaphragms 20a and 20b have a shape in which the divided diaphragm 2 is separated into two with the beam plate 22 as the center.
- the same components as those of the divided diaphragm 2 described above are denoted by the same reference numerals, and the description thereof will be omitted.
- the split diaphragm 20 a has a beam plate 122 a, and the beam plate 122 a is attached to the upper surfaces of the flanges 31 and 33.
- the split diaphragm 20 b has a beam plate 122 b, and the beam plate 122 b is attached to the lower surfaces of the flanges 31 and 33.
- These beam plates 122a and 122b are respectively provided with bolt holes (not shown), and are attached to the flanges 31 and 33 by bolts 41 and nuts 42 through the bolt holes.
- FIG. 16 is a side sectional view showing an example in which the H-shaped steel beams 3 having different heights are attached to the steel pipe column 5.
- the higher H-shaped steel beam 3 is attached to the outer diaphragm 1 based on the same method as described above. That is, the upper limit interval of the outer diaphragm 1 provided above and below the H-shaped steel beam 3 corresponds to the H-shaped steel beam 3 having a higher height. For this reason, since the vertical distance of the outer diaphragm 1 is wider than the H-shaped steel beam 3 having a low height, a gap is formed between the H-shaped steel beam 3 and the outer diaphragm 1. Will be. For this reason, by inserting another member between the H-shaped steel beam 3 and the outer diaphragm 1, the gap is filled.
- an interposing member 56 in which an H-shaped steel is notched is interposed between the H-shaped steel beam 3 and the split diaphragm 2.
- the interposed member 56 is formed by forming flanges 58 and 59 at the upper and lower ends of the web 57.
- the flange 58 is joined to the lower flange 33 in the H-shaped steel beam 3 by bolts 53 and nuts 54, and the flange 59 is joined to the beam plate 22 in the split diaphragm 2 by bolts 53 and nuts 54.
- the interposition member 56 is fixed to be separated from each other without contacting the column plate 23.
- the tensile stress is similarly applied to the beam plate 22 in the divided diaphragm 2 via the interposed member 56, and the same action as described above. An effect will be produced. Further, when compressive stress is transmitted from the lower flange 33, this is transmitted to the beam plate 22 via the interposition member 56, and is transmitted to the steel pipe column 5 as it is.
- FIG. 17 (a) and 17 (b) are examples in which the width of the column plate 23 in the height direction is configured such that the corner portion 5a side of the steel pipe column 5 is wider and the central portion 5b of the steel pipe column is narrower.
- FIG. 17A shows a configuration in which the column plate 23 is completely eliminated in the vicinity of the central portion 5 b of the steel pipe column 5, and the beam plate 22 is separated from the steel tube column 5.
- FIG. 17B is an example in which the width in the height direction of the column plate 23 is gradually narrowed from the corner portion 5 a to the central portion 5 b of the steel pipe column 5.
- the steel pipe column 5 is such that the column surface near the corner portion 5a is subjected to a larger contact pressure from the column plate 23, and other than the corner portion 5a (for example, the central portion 5b).
- a very large contact pressure is not applied from the column plate 23.
- the weight of the column plate 23 can be reduced, the cost of material and transportation efficiency can be reduced, and the welding amount when the column plate 23 and the beam plate 22 are assembled by welding can be reduced. Reduction and welding time reduction can be realized.
- handling is facilitated by reducing the weight of the divided diaphragm, and the workability of the installer can be improved.
- the joint structure 10 to which the present invention is applied may be embodied in a configuration as shown in FIG.
- the attachment plate 140 a is attached to the upper surface of the beam plate 22, and the attachment plate 140 b is attached to the lower surface of the beam plate 22.
- the flanges 31 and 33 in the H-shaped steel beam 3 are interposed between the attachment plates 140a and 140b, respectively. Then, the attachment plate 140a, the beam plate 22, and the attachment plate 140b are joined by the bolt 41 and the nut 42, and the attachment plate 140a, the flanges 31 and 33, and the attachment plate 140b are joined by the bolt 41 and the nut 42. .
- the beam plate 22 is attached to the flanges 31 and 33 in the H-shaped steel beam 3 via the attachment plates 140a and 140b. Even if it is set as such a form, there exists an effect similar to the above-mentioned.
- the joining structure 10 to which this invention is applied demonstrated taking the case where the outer diaphragm 1 was attached with respect to the steel pipe pillar 5 which consists of a square steel pipe, it is not limited to this, It is with respect to the column of a reinforced concrete structure. Of course, the same applies. Even in such a case, the column plate 23 in the divided diaphragm 2 is similarly brought into contact with the column, and the same function is exerted by applying a contact pressure from the column plate 23 to the column.
- the present invention can also be applied to concrete-filled steel pipe construction (CFT) as an alternative to the steel pipe pillar 5.
- CFT concrete-filled steel pipe construction
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Abstract
Description
、e2、e3、e4)がe≧0を満たすように設計される。
へ作用する圧縮力Ccへと変換されることとなる。対面する柱プレート23から鋼管柱5
に対しては、上述した接合部材による締め付けに基づく接触圧が元々作用しているが、これに加えて更に圧縮力Ccが加わることとなる。
の分において強められる結果、外ダイアフラム1全体の柱プレート23と鋼管柱5との間で作用する接触圧は殆ど変化しないため、両者間で摩擦力を好適に発揮させることが可能となる。その結果、鋼管柱5に対する接触圧Fが弱められても、外ダイアフラム1の重力等に基づいて落下してしまうのを防止することができる。
2 分割ダイアフラム
3 H形鋼梁
5 鋼管柱
10 接合構造
20a、20b 分割ダイアフラム
21 引張接合部
22 梁プレート
23 柱プレート
25、41 ボルト
26、27、42 ナット
31 上フランジ
32 ウェブ
33 下フランジ
79 応力伝達機構
122a、122b 梁プレート
126、127 ボルト孔
140a、140b 添接板
Claims (12)
- 柱にH形鋼梁を外ダイアフラムにより接合する柱と梁の接合構造において、
上記外ダイアフラムは、複数に分割された分割ダイアフラムからなり、
上記分割ダイアフラムは、上記柱に当接される柱プレートとを有し、
複数の上記分割ダイアフラムのうち、上記H形鋼梁に沿って配置される上記分割ダイアフラムは、上記H形鋼梁におけるフランジに取り付けられるとともに端部に上記柱プレートが設けられている梁プレートを有し、
上記分割ダイアフラム間の接合面が上記柱のコーナー部近傍とされていることにより、上記柱の各柱面には、一の上記分割ダイアフラムにおける上記柱プレートのみが当接され、
上記各分割ダイアフラム間は、上記柱プレートから上記柱の柱面へ接触圧が作用するように接合部材を介して互いに締め付け固定されていること
を特徴とする柱と梁との接合構造。 - 上記分割ダイアフラム間には、梁プレートの面よりも上方及び/又は下方に向けて立設された引張接合部を互いに当接させてなること
を特徴とする請求項1記載の柱と梁との接合構造。 - 上記接合部材としてのボルトは、隣接する上記分割ダイアフラム間において互いに当接される上記引張接合部間に挿通されてその先端がナットにより螺着されてなること
を特徴とする請求項2記載の柱と梁との接合構造。 - 上記引張接合部及び上記接合部材は、上記H形鋼梁におけるフランジと離間されてなること
を特徴とする請求項3記載の柱と梁との接合構造。 - 隣接する上記分割ダイアフラム間において互いに当接される上記引張接合部間に、上記接合部材よりも上記柱から離間する側にせん断力を伝達するための応力伝達機構が設けられていること
を特徴とする請求項3記載の柱と梁との接合構造。 - 上記分割ダイアフラムは、上記柱プレートを介して上記柱に対して溶接を除く手段又は接着を除く手段により締め付け固定されていること
を特徴とする請求項1~5のうち何れか1項記載の柱と梁との接合構造。 - 上記外ダイアフラムは、上記柱プレートを上記柱に当接させつつ、当該柱の周囲に配置された上記分割ダイアフラムの接合面間で互いに間隔が形成されるように構成され、上記接合部材により当該間隔を縮減するように上記分割ダイアフラムを締め付け固定することにより、上記接触圧を発生させること
を特徴とする請求項1~6のうち何れか1項記載の柱と梁との接合構造。 - 上記外ダイアフラムは、上記H形鋼梁の上下フランジに対してそれぞれ設けられること
を特徴とする請求項1~7のうち何れか1項記載の柱と梁との接合構造。 - 上記梁プレートは、上記H形鋼梁からの引張力が伝達された場合に、当該梁プレートの端部に設けられた柱プレートから上記柱の柱面への接触圧を低減させるとともに、当該柱プレートから対面する他の柱プレートを有する他の分割ダイアフラムまで上記引張力を伝達し、
上記他の分割ダイアフラムは、伝達されてきた引張力に基づいて上記他の柱プレートから上記柱に対して圧縮力を負荷すること
を特徴とする請求項1~8のうち何れか1項記載の柱と梁との接合構造。 - 上記柱プレートの高さ方向の幅は、柱のコーナー部側がより広く、柱の中央部側がより狭く構成されていること
を特徴とする請求項1~9のうち何れか1項記載の柱と梁の接合構造。 - 上記柱は、そのコーナー部近傍の柱面が、上記柱プレートからより大きな接触圧が作用すること
を特徴とする請求項10項記載の柱と梁の接合構造。 - 柱にH形鋼梁を外ダイアフラムにより接合する柱と梁の接合方法において、
上記外ダイアフラムを複数に分割した分割ダイアフラムを上記柱に当接させるとともに、複数の上記分割ダイアフラムのうち上記H形鋼梁に沿って配置する上記分割ダイアフラムは、端部に上記柱プレートが設けられている梁プレートを上記H形鋼梁におけるフランジに取り付け、
上記分割ダイアフラム間の接合面を上記柱のコーナー部近傍に配置することにより、上記柱の各柱面には、一の上記分割ダイアフラムにおける上記柱プレートのみが当接するようにし、
上記各分割ダイアフラム間を、上記柱プレートから上記柱の柱面へ接触圧が作用するように接合部材を介して互いに締め付け固定すること
を特徴とする柱と梁との接合方法。
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Also Published As
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US10253492B2 (en) | 2019-04-09 |
US20180223521A1 (en) | 2018-08-09 |
JP2017036653A (ja) | 2017-02-16 |
JPWO2017026113A1 (ja) | 2018-08-30 |
JP2017036654A (ja) | 2017-02-16 |
MX2018001432A (es) | 2018-06-07 |
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