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WO2009156818A1 - Elément de fondation préfabriqué pour la construction de murs - Google Patents

Elément de fondation préfabriqué pour la construction de murs Download PDF

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Publication number
WO2009156818A1
WO2009156818A1 PCT/IB2009/006011 IB2009006011W WO2009156818A1 WO 2009156818 A1 WO2009156818 A1 WO 2009156818A1 IB 2009006011 W IB2009006011 W IB 2009006011W WO 2009156818 A1 WO2009156818 A1 WO 2009156818A1
Authority
WO
WIPO (PCT)
Prior art keywords
element according
longitudinal beam
connection
longitudinal
supporting
Prior art date
Application number
PCT/IB2009/006011
Other languages
English (en)
Inventor
Emilio Brovelli
Original Assignee
Geotech Lizenz Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geotech Lizenz Ag filed Critical Geotech Lizenz Ag
Publication of WO2009156818A1 publication Critical patent/WO2009156818A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/0258—Retaining or protecting walls characterised by constructional features
    • E02D29/0266—Retaining or protecting walls characterised by constructional features made up of preformed elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/02—Retaining or protecting walls
    • E02D29/025—Retaining or protecting walls made up of similar modular elements stacked without mortar

Definitions

  • the present invention relates to a prefabricated foundation element for building walls or barriers to reduce noise with filling consisting of filling material, particularly earth or the like.
  • Background art To make these particular masonry works such as, e.g., the retaining walls or slopes and gradients at the sides of roads, motorways, railways or the like, or the walls for creating level differences between different urban areas or barriers to reduce noise, the use is known of prefabricated building elements.
  • Such elements usually consist of large-size trussed structures made from reinforced-concrete castings and which, during wall construction, are arranged one on top of the other to form a vertical or oblique pile, and then covered with filling material such as earth, sand, gravel, etc.
  • the resulting wall has considerable stability and resistance, but this can however be further increased by means of the use of particular retention systems that allow joining the construction elements the one to the other, or anchoring them to the filling material and/or directly to the slope to be held back.
  • a particular type of construction element consists in the combination of a pair of substantially horizontal longitudinal members, and a pair of supporting feet, which join together the longitudinal beams and define the supporting bases of the construction element, allowing this to rest on the ground or on another construction element underneath.
  • the longitudinal members are fitted at the top of the supporting feet and, in assembly configuration, are arranged parallel to the positioning plane of the wall to be built, with one of them facing the outside while the other is arranged on the inside of the wall.
  • These construction elements are prefabricated in specific facilities equipped with equipment for their formation in a practical easy and functional way. Once fabricated, they are subsequently transferred to the place where the wall has to be built and rapid installation operations are begun. To build walls made this way, it is usually necessary for the base of the construction elements to rest on a sufficiently sturdy and strong foundation, able to support the weight of the entire wall without sinking into the ground underneath, as well as to withstand the overturning and/or dragging-translation pressure of the barrier.
  • preventive foundation works are generally carried out in an extemporaneous way directly on the worksite, just before the construction elements are positioned.
  • these foundation works consist in excavating a trench, sometimes also with oblique section, in preparing a series of formwork boarding, made of wood or other material, on the site where the wall is to be erected, in installing adequate iron reinforcements and in filling the formwork with a casting of fresh concrete, to form a solid floor of pre-established dimensions and shape, able to support the wall.
  • a drawback of traditional foundations consists in the fact that at least a few weeks must pass before they are able to withstand loads and traction, thrust or compression forces, which considerably extends the total time needed to erect the wall.
  • a further drawback of traditional foundations consists in the fact that to erect substantially oblique walls, the installed foundation must have a substantially wedge shape, which considerably complicates either the excavation work and reinforced concrete laying or the shape of the formwork boarding and the entire foundation work.
  • prefabricated foundation elements have been conceived, i.e., fabricated in the same facilities in which the construction elements are made.
  • the main aim of the present invention is to provide a prefabricated foundation element for building walls using filling material, particularly earth or the like, that can be fabricated in a practical, easy and functional way, quickly and with relatively low production costs, and at the same time can be stored and transported relatively easily and in a very inexpensive way, as well as laid on a flat surface even in the case of the need to obtain angled walls or barriers.
  • Another object of the present invention is to provide a prefabricated foundation element for building walls using filling material, particularly earth or the like, which permits simplifying the entire wall-building operation and in particular makes easier the installation of the foundations and their connection to the construction elements.
  • a further object of the present invention is to provide a prefabricated foundation element for building walls using filling material, particularly earth or the like, which permits overcoming the mentioned drawbacks of the background art in the ambit of a simple, rational, easy, effective to use and low cost solution.
  • the present prefabricated foundation element for building walls using filling material comprises at least a structure having at least a first and a second longitudinal beam resting on the ground, that are substantially parallel with each other and associated with each other by means of at least a first and a second connection section which are substantially crossways to said longitudinal beams and are suitable for supporting, respectively, a first and a second foot for supporting at least a construction element for building walls using filling material, the extremities of said longitudinal beams extending beyond said connection sections to define a first open compartment obtained among said extremities and said first connection section, a second open compartment obtained among said extremities and said second connection section, and a third closed compartment obtained among said longitudinal beams and said connection sections, with at least one among said longitudinal beams and said connection sections being associable at least one rebar suitable for being positioned in a work configuration in which it extends inside at least one among said first, said second and said third compartment.
  • figure 1 is an axonometric view of a first embodiment of the foundation element according to the invention coupled with a construction element for building walls
  • figure 2 is a side view of the elements of figure 1
  • figure 3 is a plan view of the foundation element of figure 1
  • figure 4 is a section view along the track plane IV - IV of figure 3
  • figure 5 is a section view of a second embodiment of the foundation element according to the invention coupled with a construction element for building walls
  • figure 6 is a section view of a third embodiment of the foundation element according to the invention coupled with a construction element for building walls
  • figure 7 is a section view of two foundation elements of figure 6 coupled together
  • figure 8 is a section view of a fourth embodiment of the foundation element according to the invention coupled with a construction
  • the element 1, in particular, is intended to act as a foundation base and to support construction elements 2 which, in the particular embodiments shown in the illustrations, comprise two longitudinal members 3, 4 associated with each other by means of a first connection and support foot 5 and a second connection and support foot 6.
  • the element 1 in detail, consists of a reinforced concrete structure having a first longitudinal beam 7 and a second longitudinal beam 8 ready for resting on the ground and, in particular, for the installation in a trench excavation with horizontal flat bottom.
  • the longitudinal beams 7, 8 have a substantially flat lower surface and are arranged substantially parallel on a horizontal plane.
  • the longitudinal beams 7, 8 shown in the illustrations are substantially identical in terms of shape and dimensions but the fact cannot be ruled out, for example, that one of the two be fabricated wider than the other.
  • the longitudinal beams 7, 8 are furthermore associated the one with the other by means of a first connection section 9 and of a second connection section 10 which extend transversally, in particular at right angles, to the longitudinal beams 7, 8 and are suitable for supporting, respectively, the first foot 5 and the second foot 6 of the construction element 2.
  • each connection section 9, 10 comprises a corresponding foundation slab 9a, 10a that extends between the longitudinal beams 7, 8 and is arranged at the supporting base of the structure 1, defining a part of this.
  • the term supporting base of the structure 1 is meant the surface on which the structure 1 rests and discharges its weight on the ground in the position of normal use, i.e., that of installation in a trench excavation with flat horizontal bottom.
  • the supporting base of the structure 1 is defined by the lower surfaces of the longitudinal beams 7, 8 and of the foundation slabs 9a, 10a.
  • Each wall 9b, 10b has a supporting surface 9c, 10c intended to support the feet 5, 6 of the construction element 2 and which is arranged at a substantially greater height than that of the longitudinal beams 7, 8.
  • height shall be deemed the distance which is evaluated with respect to the supporting base of the structure 1 and which, once the element 1 has been placed in the horizontal installation configuration, corresponds to the height off the ground.
  • each wall 9b, 10b has coupling means 11, 12, 13 for fastening to the feet 5, 6.
  • the coupling means 11, 12, 13, for example, consist in a series of first holes 11 obtained on the supporting surfaces 9c, 10c and in which can be fitted a corresponding lock pin 12 which in turn can be coupled with a series of second holes 13 obtained on the feet 5, 6.
  • Both the first holes 11 and the second holes 13 are obtained so that in the installation configuration, these are substantially vertical so as to facilitate their coupling with the lock pin 12 and the positioning of the construction element 2 above the structure 1. It cannot however be ruled out that the first holes 11 and the second holes 13 be obtained substantially at right angles to the supporting surfaces 9c, 10c.
  • the supporting surfaces 9c, 10c are substantially oblique with respect to the supporting base of the element 1 and are substantially flattened, in the sense that they do not change in inclination along their entire extension.
  • Alternative embodiments are however possible in which the supporting surfaces 9c, 10c are of different shape.
  • the supporting surfaces 9c, 10c have a protuberance 14 for coupling with a corresponding opening 15 obtained on the feet 5, 6, which permits providing greater adherence between the construction element 2 and the structure 1 during installation.
  • the same result can be obtained in the event of the supporting surfaces 9c, 10c comprising an opening for coupling with a protuberance protruding from the feet 5, 6.
  • the supporting surfaces 9c, 10c of the walls 9b 5 10b have both a protuberance 14 identical to that of figure 5, and a lightening recess 16 which is suitable for fitting the protuberance 14 of an identical supplementary foundation element 17 that can be placed above the structure 1.
  • the protuberance 14 and the lightening recess 16 are arranged at the extremities of the supporting surfaces 9c, 10c in a substantially equidistant position with respect to a vertical, longitudinal and substantially median plane (shown in the figures 6 and 7 by the outline 18), so that the element 1 and the identical supplementary foundation element 17 can be easily superimposed, making the respective supporting surfaces 9c, 10c coincide (figure 7).
  • this particular geometry of the elements 1, 17 allows storing and transporting the elements 1, 17 before their installation with particularly small overall dimensions, superimposing them two by two and creating a flat-based monolith for the subsequent superimposed loads.
  • the element 1 has a protuberance 14 and a lightening recess 16 similar to those of the previous embodiment, with the only difference that they are not placed at the extremities of the supporting surfaces 9c, 10c, but remain substantially equidistant from the vertical, longitudinal and substantially median plane 18.
  • the supporting surfaces 9c, 10c are substantially oblique and, in the same way as the embodiment of the figures from 1 to 4, are intended for building sloped retaining walls.
  • the supporting surfaces 9c, 10c are substantially horizontal and allow resting the construction elements 2 on them to build a substantially vertical wall.
  • the element 1 is substantially identical to that of the figures from 1 to 4, with the only difference that the connection sections 9, 10 are without the foundation slabs 9a, 10a and are composed only of the walls 9b, 10b, which extend between the longitudinal beams 7, 8 and keep these together.
  • the walls 9b, 10b come into contact with the longitudinal beams 7, 8 only at the upper part of the beams themselves and do not reach the supporting base of the element 1.
  • the supporting base of the element 1 is composed only of the lower surfaces of the longitudinal beams
  • connection sections 9, 10 are without the walls 9b, 10b and are composed only of the foundation slabs 9a, 10a.
  • Each niche 9d, 1Od has a supporting bottom 19 for the corresponding foot 5, 6, which extends for a length substantially equal to the length of the feet 5, 6 and which is substantially oblique for building sloped walls.
  • the supporting bottom 19 is substantially horizontal to support a straight construction element 2, like that shown in figure 14 for building substantially vertical walls, or for resting an oblique construction element 2, like that shown in figure 15 for building substantially sloped walls.
  • the extremities of the longitudinal beams 7, 8 extend beyond the connection sections 9, 10.
  • connection sections 9, 10 are not exactly joined at the extremities of the longitudinal beams 7, 8 but, on the contrary, the joining point of the connection sections 9, 10 to the longitudinal beams 7, 8 is substantially distanced with respect to the above extremities.
  • the third compartment 22 is defined as "closed” inasmuch as it is circumscribed inside a rectangular frame, the four sides of which consist in the connection sections 9, 10 and in the median parts of the longitudinal beams 7, 8.
  • the first compartment 20 and the second compartment 21, on the other hand, are defined as "open" being delimited only on three sides.
  • the first, the second and the third compartment 20, 21, 22 are schematically shown in figure 3 by means of the broken line.
  • a plurality of rebars 23 a, 23b suitable for being positioned in a work configuration in which they extend substantially horizontal and overhanging inside the compartments 20, 21, 22.
  • the rebars 23a, 23b are fitted inside containment boxes 24, of the STABOX® type or the like, at least partially drowned in the structure 1.
  • an extremal part 23a of the rebars 23a, 23b is drowned in the concrete casting together with the containment boxes 24, while the opposite extremal part 23b of the rebars 23a, 23b is fitted in a configuration bent inside the containment boxes 24.
  • the containment boxes 24 have a cover 25 facing onto the outside of the structure 1 so that, before installation, it can be removed to make accessible from the outside the extremal parts 23b of the rebars 23 a, 23b and allow bending these, bringing them into the work configuration (figure 16).
  • the rebars 23 a, 23b allow, if necessary, widening the supporting base of the element 1 by means of supplementary castings with fresh concrete 26 to fill one or more of the compartments 20, 21, 22 in the installation configuration.
  • the supporting base of the element 1 according to the invention is a "progressive" contact surface or, in other words, it is designed so as to satisfy the load/capacity requirements related to the predefined project surface but which at the same time can be increased on the worksite, according to the strength characteristics of the ground, gradually increasing its load capacity thanks to the correlated increase of the ground contact surface obtained by means of the supplementary concrete castings 26.
  • the supplementary castings are inexpensively made because the structure 1 already by itself provides an outer prefabricated frame that acts as a disposable formwork boarding for the final widened foundation.
  • the element 1 allows making a supplementary casting directly inside the compartments 20, 21, 22, increasing the total load to be sustained in a way almost proportionate to the multiplication of the unitary surface in contact with the ground and only for the requested quantity.
  • figure 17 shows, merely by way of example, the element 1 shown in the figures from 1 to 4, but identical considerations can also be made for all the embodiments shown in the other illustrations.
  • the extremities of the longitudinal beams 7, 8 have additional rebars 28 which extend at least partially along a longitudinal direction, meaning parallel to the longitudinal beams 7, 8, and which are intended to allow joining to an adjacent foundation element 1.
  • the foundation elements 1 can be joined together to provide the end foundation with greater stability and strength.
  • the extremities of the longitudinal beams 7, 8 are positioned next to one another and joined by means of a supplementary concrete casting 26, which is enclosed in specific additional containment formwork boarding 27 inside which the additional rebars 28 are drowned.
  • the foundation element according to the invention is not made up only of the structure 1 defined by the longitudinal beams 7, 8 and by the connection sections 9, 10, but also of an auxiliary structure 29.
  • This auxiliary structure has a third longitudinal beam 30 for resting on the ground and, more in detail, for the installation in the trench excavation along a direction parallel with the first and the second longitudinal beam 7, 8.
  • the third longitudinal beam 30, similarly to the first and the second longitudinal beam 7, 8, has a substantially flat lower surface.
  • auxiliary structure 29 comprises a first connection arm 31 and a second connection arm 32 which extend from the third longitudinal beam 30 substantially crossways, in particular at right angles.
  • connection arms 31, 32 are associable with the second longitudinal beam 8 and cooperate with the structure 1 to support at least partially the supporting feet
  • connection arms 31, 32 comprise a portion 33 of extremity which can be positioned substantially superimposed on the second longitudinal beam 8 and which is shaped substantially complementary to the profile of the second longitudinal beam 8.
  • connection arms 31 , 32 are provided at the portions 33 which permit joining the connection arms 31 , 32 to the second longitudinal beam 8.
  • Such fastening means 34, 35 comprise a series of cavities 34 obtained on the second longitudinal beam 8 and on the portions 33 of the connection arms 31,
  • the fourth, the fifth and the sixth compartments 36, 37, 38 are schematically illustrated in figure 22 by a broken line.
  • a plurality of auxiliary rebars 39a, 39b suitable for being positioned in a work configuration in which they extend substantially horizontal and overhanging inside the compartments themselves.
  • the auxiliary rebars 39a, 39b are fitted inside containment boxes 24, of the STABOX® type or the like.
  • the fourth, fifth and sixth compartments 36, 37, 38 can also be filled with fresh concrete in the installation configuration so as to widen, if necessary, the supporting base of the auxiliary structure 29.
  • the auxiliary structure 29 is identical to that of the figures from 20 to 22 but differs in that it comprises a stiffening beam 40.
  • Such stiffening beam is suitable for connecting the extremities of the connection arms 31, 32 opposite to the third longitudinal beam 30 so as to provide greater strength both during transport and during the installation phase.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Foundations (AREA)
  • Revetment (AREA)

Abstract

La présente invention concerne un élément de fondation préfabriqué pour la construction de murs qui utilise un matériau de remplissage, particulièrement de la terre ou analogue, qui comprend une structure qui comporte des première et seconde poutres longitudinales qui reposent sur le sol, qui sont sensiblement parallèles l’une à l’autre et qui sont associées l’une à l’autre au moyen de première et seconde sections de liaison qui sont sensiblement transversales aux poutres longitudinales et sont appropriées pour supporter, respectivement, des premier et second pieds de support d’un élément de construction pour la construction de murs qui utilisent un matériau de remplissage, les extrémités des poutres longitudinales s’étendant au-delà des sections de liaison pour définir un premier compartiment ouvert obtenu parmi les extrémités de poutre et les premières sections de liaison, un deuxième compartiment ouvert obtenu parmi les extrémités de poutre et les secondes sections de liaison, et un troisième compartiment fermé obtenu parmi les poutres longitudinales et les sections de liaison, les poutres longitudinales et les sections de liaison pouvant être des barres d’armatures associables appropriées pour être positionnées dans une configuration de travail dans laquelle elles s’étendent à l’intérieur des compartiments.
PCT/IB2009/006011 2008-06-27 2009-06-22 Elément de fondation préfabriqué pour la construction de murs WO2009156818A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMO2008A000183 2008-06-27
ITMO20080183 ITMO20080183A1 (it) 2008-06-27 2008-06-27 Elemento di fondazione prefabbricato per l'erezione di muri con riempimento di materiale di riporto, particolarmente terra o simili

Publications (1)

Publication Number Publication Date
WO2009156818A1 true WO2009156818A1 (fr) 2009-12-30

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PCT/IB2009/006011 WO2009156818A1 (fr) 2008-06-27 2009-06-22 Elément de fondation préfabriqué pour la construction de murs

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IT (1) ITMO20080183A1 (fr)
WO (1) WO2009156818A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20101487A1 (it) * 2010-08-04 2010-11-03 Lombarda Prefabbricati S P A Procedimento di produzione e di posa in opera del sistema fondazione-pilastro, particolarmente per costruzioni edili e simili.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169135A (en) * 1981-04-07 1982-10-18 Hokuriku Concrete Kogyo Kk Built-up type retaining wall
DE3406663A1 (de) * 1984-02-24 1985-09-05 Albert 4270 Dorsten Stewing Laermschutzwand
WO1995013431A1 (fr) * 1993-11-12 1995-05-18 Ts Modular Systems Pty. Limited Parois modulaires de retenue
FR2777923A1 (fr) * 1998-04-22 1999-10-29 Philippe Blanc Dispositif pour faciliter la mise en oeuvre des semelles de fondations et de murs de soubassement d'une construction
US20020017068A1 (en) * 1996-07-17 2002-02-14 Mose Monachino Foundation element, methods for the construction of prefabricated structures including these elements, particularly prefabricated tunnels, and prefabricated structures made by these methods
WO2007122485A2 (fr) * 2006-04-21 2007-11-01 Geotech Lizenz A.G. Élément de construction pour la fabrication de parois au moyen d'un matériau de remplissage, notamment de la terre ou similaire

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57169135A (en) * 1981-04-07 1982-10-18 Hokuriku Concrete Kogyo Kk Built-up type retaining wall
DE3406663A1 (de) * 1984-02-24 1985-09-05 Albert 4270 Dorsten Stewing Laermschutzwand
WO1995013431A1 (fr) * 1993-11-12 1995-05-18 Ts Modular Systems Pty. Limited Parois modulaires de retenue
US20020017068A1 (en) * 1996-07-17 2002-02-14 Mose Monachino Foundation element, methods for the construction of prefabricated structures including these elements, particularly prefabricated tunnels, and prefabricated structures made by these methods
FR2777923A1 (fr) * 1998-04-22 1999-10-29 Philippe Blanc Dispositif pour faciliter la mise en oeuvre des semelles de fondations et de murs de soubassement d'une construction
WO2007122485A2 (fr) * 2006-04-21 2007-11-01 Geotech Lizenz A.G. Élément de construction pour la fabrication de parois au moyen d'un matériau de remplissage, notamment de la terre ou similaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20101487A1 (it) * 2010-08-04 2010-11-03 Lombarda Prefabbricati S P A Procedimento di produzione e di posa in opera del sistema fondazione-pilastro, particolarmente per costruzioni edili e simili.

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