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WO2011009219A1 - Appareil et procédé de construction d’excavation dépourvue d’étayage et de sous-sol - Google Patents

Appareil et procédé de construction d’excavation dépourvue d’étayage et de sous-sol Download PDF

Info

Publication number
WO2011009219A1
WO2011009219A1 PCT/CA2010/001167 CA2010001167W WO2011009219A1 WO 2011009219 A1 WO2011009219 A1 WO 2011009219A1 CA 2010001167 W CA2010001167 W CA 2010001167W WO 2011009219 A1 WO2011009219 A1 WO 2011009219A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
excavation
panels
wall
posts
Prior art date
Application number
PCT/CA2010/001167
Other languages
English (en)
Inventor
Alfonso Gonzalez
Original Assignee
Sfs Structures Ltd.
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 Sfs Structures Ltd. filed Critical Sfs Structures Ltd.
Publication of WO2011009219A1 publication Critical patent/WO2011009219A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E02D17/086—Travelling trench shores

Definitions

  • the present invention relates generally to the excavation and construction of basements for buildings. More particularly, the present invention relates to a set of components which used together provide for a shoring-less excavation and relatively simultaneous construction of finished basement structures, and a system for their use in practice.
  • the panels are installed on the back side of the columns.
  • the panels must be designed to withstand a bending moment generated by the lateral earth pressure.
  • US 6,981,686 B2 - This invention relates to modular wall assemblies of the type used for earth excavations, concrete forms and temporary enclosures. More specifically, the invention relates to a set of parts and materials that facilitate the assembly and disassembly of such walls in the widest possible variety of shapes and layouts with a minimum number of different parts. It describes a temporary assembly, and while not directly relevant, shows one prior art approach to modular wall assemblies.
  • US 7,500,807 B2 This method uses metal sheet piling sections (also referred to herein as "sheet piles” or “sheet piling”), preferably AZ series sheet piling, to form a wall around the perimeter of a structure that is being built in place of a traditional concrete foundation wall, and is provided as an example of a prior art method of finished-wall excavation.
  • sheet piles also referred to herein as "sheet piles” or “sheet piling”
  • AZ series sheet piling preferably AZ series sheet piling
  • US 6,616,380 B1 - This method includes excavating soil to form a downward sloping ramp, and forming soil to form a downward sloping ramp, and forming a concrete slab on the downward sloping ramp. The method further includes continuing to excavate soil to extend the downward sloping ramp to a location under the concrete slab, and continuing to form the concrete slab on the downward sloping ramp so that a subterranean structure is formed having an essentially continuous concrete slab with a first portion which is above, and spaced-apart from, a second portion of the slab.
  • This reference is provided to show an example of subterranean excavation-while-building methods in the industry's prior art.
  • US 6,402,435 B1 -- This invention relates to a system and method for constructing a pre-stressed modular construction for supporting an applied load.
  • the present invention relates to a system and method for pre-stressed modular walls.
  • the system comprises a plurality of header stacks constructed from a variety of header units.
  • the header stacks are coupled by structural members.
  • Active reinforcement elements are used to induce a pre-stressing force into the header stacks to support or retain the applied load. This is provided as an example of modular construction techniques in the prior art.
  • US 6,299,386 B1 - This invention relates to a method for a wall that retains earthen material, and more particularly to a shoring wall for below-grade excavations. This invention relates to a temporarily system.
  • this system provides for the drilling of holes around the outer perimeter wall, then the exact placement of forms and reinforcement steel within those holes, as well as similarly drilling and placing interior bearing posts.
  • Each post is relatively exactly formed with adequate footings and reinforcement, while covered by the earth, prior to excavation.
  • pre-formed parabolic wall panels of reinforced concrete which may also include extra waterproofing and insulating materials, are placed and fixed between the perimeter posts as those posts are uncovered by the excavation.
  • beams are laid between facing perimeter walls (post-to-post across the excavated hole) in order that the perimeter walls will be braced against pressures exerted by the earth behind them.
  • the parabolic curve of the panels is placed "outward" from the posts.
  • Each layer of wall-panels mates with a new panel below it, preferably with a lap joint and preferably with a watertight seal along that joint and the joint with the panel and each post. This continues downward until the desired predetermined depth is attained, at which stage wall footings and the lowest floor may be poured in place.
  • building may proceed above ground, as the interior posts, beams, and perimeter posts form bearing structures to support the construction above grade.
  • the invention comprises the method, as well as the apparatus of the curved formed concrete panels with pre-formed lap joints between them, and with the preferred mechanism of attachment of each panel to each post.
  • That attachment is provided by a bolt system through the post to a steel plate which is bonded to each back-side corner of each post.
  • the bolt holds the panels from downward movement during excavation, and from moving away from their attachment to the post prior to backfilling behind the newly created wall.
  • the system provides a finished interior wall without further work, the interior wall capable of having decorative or functional features embedded during manufacture.
  • the SFS system does not use flat panels; rather, it uses curved or parabolic panels, leading the system to work in a compressive status.
  • the system connects the panels with columns on the lateral faces.
  • the system does not require massive steel reinforcement of the posts to absorb the bending moment.
  • the panels will be working in a total compressive status.
  • the system doesn't require wooden blocks or clips.
  • the system can be started with the precast manufacturing of panels and even posts several weeks prior to access to the site.
  • the system of this invention does not extend beyond the property line, but provides a structure at the property line.
  • the system is a permanent bearing wall and uses precast concrete panels and precast concrete columns.
  • the present invention provides a pre-cast concrete panel with parabolic cross-section along a plane horizontally intersecting the panel for use as a wall in a shoring-free construction of a basement during excavation.
  • the panel may have a pre- configured joint along its upper and lower perimeters formed to mate a similar panel when stacked together in the wall.
  • the panel can have a coating on a surface.
  • the panel coating may be waterproof on the outer surface.
  • the panel coating may insulate against heat transfer.
  • the panel can have an element where the joint is a lapping layer of waterproofing membrane affixed to the earth-facing side at its lower edge and temporarily held wrapped around its lower edge and extending up its opposite side during excavation, for release just prior to placement of a next-adjacent panel beneath the panel, to cover the joint between panels.
  • a plurality of posts cast in place in holes along a perimeter of a building site's planned excavation spaced and formed to substantially exactly mate post-side edge to panel-edge in compression to form a shoring wall during mass excavation which when completed will be a finished bearing wall for the structure for which the excavation was made.
  • Each post adapts with a receiver for affixation of an adjacently-placed panel during assembly during mass excavation.
  • the affixation is by being cemented by waterproof concrete formed in a joint between the post and panel on the side inside the void formed within the formed wall.
  • the present invention provides a system of shoring-free mass excavation and construction of a walled basement structure comprising the steps of:
  • cross-beams may be installed while excavation ceases, after which the excavation and wall assembly continues;
  • the system may have posts which are pre-cast and inserted into the holes rather than being cast-in-place by placing forms, reinforcing elements and pouring concrete into the holes to form posts.
  • Figure 1 is a set of cross-sectional drawings of various prior art retaining wall systems used in shoring excavations.
  • Figure 2 is a fictional structural drawing or site plan showing placement of exemplar pile/column on an imaginary plot of land.
  • Figure 3 is a cross-sectional drawing on a horizontal plane through two adjacent pillars and their enclosed panel.
  • Figure 4 is an architectural rendering of the inner surface of an assembled wall portion.
  • Figure 5 is an exploded view of 3 interlocking panels.
  • Figures 6a, b, c, and d are architectural drawings of different perspectives of an example panel.
  • Figure 7a is a cross sectional elevation of a pile/column bisected along a vertical plane midway and perpendicular to its inner face.
  • Figure 7b is a cross-section of an exemplar pillar/column along a horizontal line at some point mid-way its height showing reinforcing elements.
  • Figure 8 is a cross-section of a pillar and panel combination along a horizontal plane showing details of the joint and fastening means between panel and pillar/column.
  • the present invention provides a method and system for the excavation and construction of basement structures in a relatively simultaneous fashion without separate shoring systems.
  • One of the targets of this method is to eliminate the construction of a temporary shoring system, which as a general rule, is conformed of cut-off caisson walls or timber lagging and soldier piles.
  • This temporary shoring system will be replaced with a permanent concrete wall, which in an embodiment will be formed with precast concrete rectangle piles-columns 10 with dimension 300 mm x 400 mm as a typical piece.
  • each pile-column 10 will be provided concrete footings 1.0 m to 2.0 m below the basement's grade level (adjusted to suit the requirements of a typical geotechnical site report), poured on site, with tremie tube or concrete pump. Concrete placed by tremie tube should preferably have a slump of not less than 150 mm.
  • the precast concrete curved panels 20 of an embodiment this invention will be of total dimension 3600 mm x 1000 mm x 150 mm, with an arc length of 33425 mm, and radius of 112872 mm.
  • the curved formed concrete panel system can include pre-formed lap joints 30 between each panel, and the panels will be attached to the piles-columns 10.
  • that attachment is provided by a bolt system 40 through the panel to a steel plate 50 which is bonded to each back-side corner of each post 10, extending laterally parallel to the excavated face.
  • the bolt 40 holds each panel 20 from downward movement during excavation, and from moving away from the attachment to the post 50 prior to backfilling behind the newly created wall.
  • a "concrete welding joint" 60 will be constructed in order to integrate the piles-columns with the concrete panels and the three elements will be working together at this time , as one piece, achieving an integral system working in compressive forces to retain the integrity of the basement space formed by the walls. This is not a “sliding system”.
  • the concrete panels 20 are installed after the piles-columns 10 installation and after the excavation is already done as it is done. Backfilling behind the newly created wall is then done, putting the lateral soil against the new wall, keeping the static state of the surrounding earth.
  • Customized shape piles-columns 10 and panels 20 will be used accordingly the architectonic and structural features of each specific project.
  • the necessary rebar 70 to mitigate the bending moment for the piles-columns 10 will be determined for the maximum height required without lateral supporting interior beams (or with an optimal number of beams, and the specific weight of the confined soil acting on the outside of the wall system, through the concrete panels system .
  • Specific steel reinforcement design must be performed according to the soil characteristics for each site. COMPRESSIVE STATUS
  • an important feature of this system is the concept that the arrangement is conceived to work in total "compressive status". This means a very important saving on the cost for main reinforcement steel bars.
  • an engineered graded macro-synthetic fiber can be used for secondary reinforcement for the concrete.
  • the fiber can preferably be added at a rate of 2 kg/m3 .
  • the "concrete welding joint 60" may be a chamfer shaped fillet, in a preferred embodiment with dimensions of 367 mm x 508 mm x 448 mm.
  • the concrete to be used for this joint may contain fiber with a minimum addition rate of 3 kg / m3 .
  • the standard curing time would then be 7 days with normal wetting procedure.
  • a waterproof feature of the system may be provided in several ways:
  • the panel surface that will be in contact with the soil can be made with a final polished finish. This means that all the texture will be completely closed, doing away with the porosity of the exposed surface, and not allowing water penetration.
  • a mineral waterproof hardener may also be used at the final polishing process.
  • the concrete panels 20 should preferably have a special interlocked system (between vertically adjacent panels as they are stacked into place) 30 that will be caulked and the joints will be covered on the back or earth-facing side with another extra membrane to avoid water penetration, assuring waterproofing for the entire system.
  • the first step is to drill all holes 5 for columns / piling 10.
  • Perimeter columns / piles 10 are placed on site and central columns / piles are placed at the same time.
  • Mass excavation does not commence until after all columns / piles 10 are installed into their exact location.
  • Each hole will be filled with crushed gravel with a size preferably not bigger than 4.75 mm, surrounding every pile-column 10, 12 in order to maintain a vertical position.
  • the first row of concrete panels 20 will be installed, with the panels being roughly 1.0 metres tall.
  • the concrete panels 30 will be provided with the mechanism of attachment 40, 50 of each panel 20 to each post 10.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

La présente invention concerne un appareil et un procédé d'excavation dépourvue d'étayage et de construction de sous-sol. Des poteaux sont installés dans des trous creusés autour d'un périmètre, en positionnant des poteaux préfabriqués ou en positionnant exactement des formes et de l'acier d'armature à l'intérieur de ces trous, ainsi que des poteaux porteurs intérieurs creusés et formés de façon similaire ; chaque périmètre et chaque poteau porteur étant formés ou pourvus de socles adéquats et de renfort avant l'excavation en masse, lorsque des panneaux muraux paraboliques de béton armé préformés, qui possèdent une étanchéité à l'eau et une isolation facultatives, sont positionnés et fixés entre les poteaux de périmètre découverts par l'excavation en masse. Lorsque l'excavation atteint une profondeur prédéterminée, des poutres peuvent être posées entre des murs de périmètre opposés, de poteau à poteau, en travers du trou excavé pour supporter les murs contre les pressions exercées par la terre. Chaque panneau est incurvé « vers l'extérieur », chaque couche des panneaux muraux s'accouplant avec la couche en dessous avec un joint conçu préalablement et un joint étanche à l'eau, également avec chaque poteau, continuant vers le bas jusqu'à ce que la profondeur souhaitée soit atteinte, lorsque des socles de mur et le plancher le plus bas, qui forment les murs de périmètre finaux et la fondation, peuvent être coulés.
PCT/CA2010/001167 2009-07-24 2010-07-23 Appareil et procédé de construction d’excavation dépourvue d’étayage et de sous-sol WO2011009219A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA 2673876 CA2673876A1 (fr) 2009-07-24 2009-07-24 Materiel et methode d'excavation sans etayage et de construction de sous-sol
CA2,673,876 2009-07-24

Publications (1)

Publication Number Publication Date
WO2011009219A1 true WO2011009219A1 (fr) 2011-01-27

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CA (1) CA2673876A1 (fr)
WO (1) WO2011009219A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018009958A1 (fr) * 2016-07-15 2018-01-18 Mark Robert Edmund Curtis Panneaux en béton préfabriqué utilisés comme revêtement de surface de surfaces périphériques d'excavations
CN108842783A (zh) * 2018-06-28 2018-11-20 淮海工学院 一种利用稀桩-曲面板壳进行基坑支护的施工方法
CZ307831B6 (cs) * 2018-02-05 2019-06-05 PPZS s.r.o. Permanentní prefabrikovaná záporová stěna
CN113565145A (zh) * 2021-08-12 2021-10-29 武大巨成结构股份有限公司 一种地下室抗浮预应力可多次后施加装置
CN115012423A (zh) * 2022-06-07 2022-09-06 广州地铁设计研究院股份有限公司 一种基坑支护的腰梁浇筑施工方法及腰梁结构

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111608187B (zh) * 2020-05-20 2021-08-31 上海建工集团股份有限公司 一种止水结构及其施工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB127978A (en) * 1918-06-10 1919-06-10 Frederic William Duckham Improvements in and connected with Ferro-concrete Construction of Docks.
JPS5944431A (ja) * 1982-09-06 1984-03-12 Kubota Ltd 地下室の構築方法
US5158399A (en) * 1991-12-27 1992-10-27 Flores Raymond H Method for erecting a below grade wall
US5505564A (en) * 1993-02-08 1996-04-09 Beheersmaatschappij Verstraeten B.V. Method for providing a sheet pile wall in the ground and a prefabricated wall element for carrying out such method
JPH0971956A (ja) * 1995-09-06 1997-03-18 Kensetsu Kiso Eng Co Ltd 土留め擁壁
CN2424236Y (zh) * 1999-07-16 2001-03-21 彭高培 顶撑式自立支护结构

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB127978A (en) * 1918-06-10 1919-06-10 Frederic William Duckham Improvements in and connected with Ferro-concrete Construction of Docks.
JPS5944431A (ja) * 1982-09-06 1984-03-12 Kubota Ltd 地下室の構築方法
US5158399A (en) * 1991-12-27 1992-10-27 Flores Raymond H Method for erecting a below grade wall
US5505564A (en) * 1993-02-08 1996-04-09 Beheersmaatschappij Verstraeten B.V. Method for providing a sheet pile wall in the ground and a prefabricated wall element for carrying out such method
JPH0971956A (ja) * 1995-09-06 1997-03-18 Kensetsu Kiso Eng Co Ltd 土留め擁壁
CN2424236Y (zh) * 1999-07-16 2001-03-21 彭高培 顶撑式自立支护结构

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018009958A1 (fr) * 2016-07-15 2018-01-18 Mark Robert Edmund Curtis Panneaux en béton préfabriqué utilisés comme revêtement de surface de surfaces périphériques d'excavations
CZ307831B6 (cs) * 2018-02-05 2019-06-05 PPZS s.r.o. Permanentní prefabrikovaná záporová stěna
CN108842783A (zh) * 2018-06-28 2018-11-20 淮海工学院 一种利用稀桩-曲面板壳进行基坑支护的施工方法
CN113565145A (zh) * 2021-08-12 2021-10-29 武大巨成结构股份有限公司 一种地下室抗浮预应力可多次后施加装置
CN115012423A (zh) * 2022-06-07 2022-09-06 广州地铁设计研究院股份有限公司 一种基坑支护的腰梁浇筑施工方法及腰梁结构
CN115012423B (zh) * 2022-06-07 2023-10-10 广州地铁设计研究院股份有限公司 一种基坑支护的腰梁浇筑施工方法及腰梁结构

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