CN211006701U - Foundation pit supporting structure integrating pile and wall - Google Patents

Foundation pit supporting structure integrating pile and wall Download PDF

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Publication number
CN211006701U
CN211006701U CN201921895179.6U CN201921895179U CN211006701U CN 211006701 U CN211006701 U CN 211006701U CN 201921895179 U CN201921895179 U CN 201921895179U CN 211006701 U CN211006701 U CN 211006701U
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China
Prior art keywords
pile
hollow
foundation pit
basement
steel bar
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Active
Application number
CN201921895179.6U
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Chinese (zh)
Inventor
董鹏
范君宇
张衡
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Shanghai Qiangjin Foundation Engineering Co Ltd
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Priority to CN201921895179.6U priority Critical patent/CN211006701U/en
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Abstract

The utility model discloses a pile-wall integrated foundation pit supporting structure, which is characterized by comprising an enclosure structure arranged outside a foundation pit, wherein the enclosure structure is rows of hollow T-shaped piles; the enclosure structure is also used as an underground outdoor wall structure, the large end face of the hollow T-shaped pile faces towards the inner side of the foundation pit, and the hollow T-shaped pile is also provided with a steel bar connector which is connected with a basement laminate; the top of the hollow T-shaped pile is provided with a capping beam, a reserved steel bar is arranged above the capping beam, and the reserved steel bar is connected with a force transmission bracket on the side edge of the top plate of the basement. The scheme effectively solves the problems of how to construct the rigid connecting node of the fender pile and the basement structure in the actual construction process, the fluctuation of the pile arrangement surface of the cast-in-place pile and the like, greatly improves the construction efficiency of the fender pile, reduces the thick bottom of the basement outer wall and the quantity of pile foundations, provides a new idea for the supporting design construction and the underground structure design of underground engineering, and promotes the development of the industry in the directions of energy conservation, environmental protection and economy.

Description

Foundation pit supporting structure integrating pile and wall
Technical Field
The utility model relates to a civil engineering technical field is an underground structure of stake wall unification particularly.
Background
In the current engineering practical application, the stake that "stake wall unification" technology adopted is mostly bored concrete pile, and stake and basement outer wall connected mode have: steel bar planting connection or steel bar joint reservation, close-fitting connection and the like. In actual construction, the existing 'pile-wall integrated' process has the following defects: the pile forming quality of the cast-in-place pile is difficult to control, the surface of the row of piles after excavation is large in undulation and rough in surface, and surface concrete needs to be mechanically chiseled off for leveling; the construction workload of steel bar planting in the cast-in-place pile is large, the construction quality is uncontrollable, and the position required by the design is difficult to control when the reserved steel bar joint is constructed; the close-fitting connection mode, the fender post and the basement outer wall are mutually independent, and the purpose of 'combining the post and the wall' cannot be achieved.
In view of the above disadvantages, it is necessary to research a technology for replacing a cast-in-place pile with a new precast pile, i.e., a hollow T-shaped pile, so as to have the functions of a foundation pit support pile, a basement exterior wall and a side pile.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the problem that exists among the prior art is overcome, a foundation ditch supporting construction of stake wall unification is provided.
In order to achieve the purpose, the technical scheme adopted by the patent is as follows:
the pile-wall integrated foundation pit supporting structure comprises an enclosure structure arranged on the outer side of a foundation pit, wherein the enclosure structure is rows of hollow T-shaped piles; the enclosure structure is also used as an underground outdoor wall structure, the large end face of the hollow T-shaped pile faces towards the inner side of the foundation pit, and the hollow T-shaped pile is also provided with a steel bar connector which is connected with a basement laminate; the top of the hollow T-shaped pile is provided with a capping beam, a reserved steel bar is arranged above the capping beam, and the reserved steel bar is connected with a force transmission bracket on the side edge of the top plate of the basement.
The steel bar connector is connected with an anchoring steel bar, the anchoring steel bar is positioned in the hollow T-shaped pile and connected with the main steel bar, and the tail end of the anchoring steel bar is provided with a bend angle.
The inside reinforced concrete structure that is of biography power bracket, the reservation reinforcing bar of capping top and the inside steel bar connection of biography power bracket.
The force transfer bracket is positioned at the side column of the basement.
Has the advantages that:
the section of one side, close to a foundation pit, of the hollow T-shaped pile is large, the surface of the precast pile is smooth, and a continuous and smooth surface can be formed after the foundation pit is excavated without leveling;
secondly, the precast pile can be processed in a factory and then transported to a construction site, so that the construction speed is high and the environment is protected;
thirdly, a reserved interface can be designed in advance when the precast pile is manufactured, the pile can be connected with the basement structure through the reserved interface, no steel bar needs to be planted, and the position of the reserved interface is controllable;
fourthly, the pile body quality of the precast pile is reliable and easy to check.
The precast pile is used for replacing the traditional cast-in-place pile, namely a novel 'pile-wall-in-one' process, the problems of how to construct the rigid connecting node of the fender pile and the basement structure in the actual construction process, the surface fluctuation of the pile row of the cast-in-place pile and the like are effectively solved, the construction efficiency of the fender pile is greatly improved, the number of thick bottoms of basement outer walls and pile foundations is reduced, a new thought is provided for underground engineering support design construction and underground structure design, and the development of the industry towards energy conservation, environmental protection and economic directions is promoted.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Fig. 1 is a schematic view of a pile-wall integrated foundation pit supporting structure.
Fig. 2 is a structural diagram of a hollow T-shaped pile.
FIG. 3 is a schematic cross-sectional view of a hollow T-shaped pile
Fig. 4 is a schematic view of the connection of the hollow T-shaped piles and the slabs.
Fig. 5 is a partial structural view of the capping beam.
Fig. 6 is a schematic view of the connection structure of the capping beam and the force transmission bracket.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, the foundation pit supporting structure with integrated piles and walls is characterized in that the enclosure structure is rows of hollow T-shaped piles 1; the enclosure structure is also used as an underground outdoor wall structure, the large end face of the hollow T-shaped pile faces the inner side of the foundation pit, and the hollow T-shaped pile is also provided with a steel bar connector 2 which is connected with a laminate 6 or a bottom plate of the basement; the top of the hollow T-shaped pile is provided with a capping beam 3, a reserved steel bar 4 is arranged above the capping beam, and the reserved steel bar is connected with a force transmission bracket 5 on the side edge of the top plate of the basement.
The steel bar connector 2 is connected with an anchoring steel bar 21, the anchoring steel bar is positioned in the hollow T-shaped pile and connected with the main steel bar 11, and the tail end of the anchoring steel bar 21 is provided with a bend angle. The inside of the force transmission bracket 5 is of a reinforced concrete structure, and the reserved steel bars 4 above the capping beam are connected with the steel bars inside the force transmission bracket.
The force transfer bracket 5 is positioned at the position of the basement side column 7.
A waterproof layer 8 is arranged between the basement outer wall 9 and the hollow T-shaped pile 1
The hollow T-shaped pile is characterized in that the reinforcing steel bar connector 2 is arranged in advance, when earth excavation in a foundation pit is finished and an underground structure is constructed, the reinforcing steel bar connector 2 can be connected with a main reinforcement of the underground structure, and a reliable whole body is formed by pouring. Because precast pile size and specification are fixed, reserve the construction that the ware 2 of plugging into can be accurate to the assigned position, it is more reliable than the interior embedded bar of bored concrete pile. In order to fully exert the effect of the fender pile, after the foundation pit construction is completed, the fender pile not only needs to be combined with the outer wall of the basement to resist lateral water and soil pressure, but also needs to bear upper load by means of force transmission of the force transmission bracket 5, and therefore the purpose of reducing the number of foundation piles is achieved.
Pile and basement bottom plate, floor are connected: when the precast pile is designed and processed in a factory, anchoring steel bars and steel bar sleeve connectors are reserved at the foundation bottom plate and the floor slab in advance; when the underground structure is constructed, the main reinforcement of the underground structure and the anchoring reinforcement of the pile body can be connected through the connector to form a relatively firm and reliable whole.
The crown beam is used as a concrete continuous beam and mainly used for connecting the row piles into a whole. When the pile-wall integration technology is adopted, the bracket and the crown beam are used as main force transmission components to share the vertical load to the fender pile. In order to bear the upper load more directly, the bracket is preferably arranged at the side column position of the basement.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. The pile-wall integrated foundation pit supporting structure is characterized by comprising an enclosure structure arranged on the outer side of a foundation pit, wherein the enclosure structure is rows of hollow T-shaped piles; the enclosure structure is also used as an underground outdoor wall structure, the large end face of the hollow T-shaped pile faces towards the inner side of the foundation pit, and the hollow T-shaped pile is also provided with a steel bar connector which is connected with a basement laminate; the top of the hollow T-shaped pile is provided with a capping beam, a reserved steel bar is arranged above the capping beam, and the reserved steel bar is connected with a force transmission bracket on the side edge of the top plate of the basement.
2. The pile-wall integrated foundation pit supporting structure of claim 1, wherein the reinforcing bar connector is connected to an anchoring reinforcing bar, the anchoring reinforcing bar is positioned inside the hollow T-shaped pile and connected to the main reinforcing bar, and the end of the anchoring reinforcing bar is provided with a bending angle.
3. The pile-wall integrated foundation pit supporting structure of claim 1, wherein the force transmission bracket is of a reinforced concrete structure, and the reserved steel bars above the capping beam are connected with the steel bars inside the force transmission bracket.
4. The pile-wall integrated foundation pit supporting structure of claim 1, wherein the force-transferring bracket is located at the side column of the basement.
CN201921895179.6U 2019-11-06 2019-11-06 Foundation pit supporting structure integrating pile and wall Active CN211006701U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921895179.6U CN211006701U (en) 2019-11-06 2019-11-06 Foundation pit supporting structure integrating pile and wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921895179.6U CN211006701U (en) 2019-11-06 2019-11-06 Foundation pit supporting structure integrating pile and wall

Publications (1)

Publication Number Publication Date
CN211006701U true CN211006701U (en) 2020-07-14

Family

ID=71478963

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921895179.6U Active CN211006701U (en) 2019-11-06 2019-11-06 Foundation pit supporting structure integrating pile and wall

Country Status (1)

Country Link
CN (1) CN211006701U (en)

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