CN109914423B - Foundation pit support treatment method in narrow space of house and ground warehouse - Google Patents
Foundation pit support treatment method in narrow space of house and ground warehouse Download PDFInfo
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- CN109914423B CN109914423B CN201910167398.0A CN201910167398A CN109914423B CN 109914423 B CN109914423 B CN 109914423B CN 201910167398 A CN201910167398 A CN 201910167398A CN 109914423 B CN109914423 B CN 109914423B
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Abstract
The invention relates to a method for supporting and treating a foundation pit in a narrow space of a house and a ground depot, which comprises the following steps: 1) constructing a house pile foundation with a construction number; 2) driving a small seam allowance steel sheet pile at the boundary position of the ground depot and the number room; 3) pouring a No. room cushion layer, and configuring a steel mesh sheet on an inner cushion layer 5m away from a junction area of the No. room and the garage; 4) the side surface of the steel sheet pile is provided with a double-spliced channel steel purlin, a pull rod penetrates through the steel sheet pile and a reserved hole in the middle of the purlin, the end part of the pull rod is fixed by an anchor head, and the other end of the pull rod is connected and fixed with a pull rod steel bar joint arranged in the cushion layer; 5) a construction number room bottom plate; 6) excavating a garage foundation pit lower than the floor of the room, and constructing a bottom plate and an outer wall structure; and after the construction of the garage basement is finished, pulling out the steel sheet pile and recycling. By adopting the method, the height difference foundation pit in the narrow space between the house bottom plate and the ground warehouse can be well processed, the problem that the construction space of a supporting system is insufficient due to the dense pile foundation under the house bottom plate is avoided, and the displacement and the damage of the house bottom plate and the pile foundation caused by the excavation of the ground warehouse are also avoided.
Description
Technical Field
The invention relates to a foundation pit support in a narrow space of a house and a ground depot, in particular to a treatment method of the foundation pit support in the narrow space of the house and the ground depot.
Background
At present, in building construction engineering, because basement development requirement often needs to carry out excavation supporting, but according to building layout, No. room basement bottom plate is generally higher than basement bottom plate of basement, and excavation of basement often can lead to the aversion of No. room pile foundation and bottom plate under the state of not strutting, causes the destruction. Generally, the supporting can be carried out at the high-low junction position of a basement and a house, a self-supporting system such as a cement-soil mixing wall gravity dam is often adopted, but the distance between a basement bottom plate of the house and an outer wall of the basement is narrow under most conditions, and a pile foundation of the house influences the construction of the self-supporting system and cannot support.
Disclosure of Invention
The invention aims to provide a method for supporting a foundation pit in a narrow space of a house and a ground depot, which can support the foundation pit at a deep and shallow junction in the narrow space, avoid the defect of insufficient construction space in the traditional process and solve the defects of limited construction period and secondary waste of construction cost.
In order to achieve the purpose, the technical scheme of the invention is as follows: a foundation pit support treatment method in a narrow space of a house and a ground depot is characterized by comprising the following specific steps:
1) constructing a pile foundation of the size room, and driving a small seam allowance steel sheet pile at the boundary position of the ground warehouse and the size room after the pile foundation is completed;
2) pouring a No. house cushion layer, configuring a steel bar net sheet on an inner cushion layer 5m away from a junction area of the No. house and a ground warehouse, and arranging a horizontal steel bar pull rod;
3) the side surface of the steel sheet pile is provided with a double-spliced channel steel purlin, a steel bar pull rod penetrates through a reserved hole in the middle of the steel sheet pile and the purlin, the end part of the steel sheet pile is fixed by an anchor head, and the other end of the steel sheet pile is fixedly connected with the steel bar pull rod arranged in the cushion layer;
4) a construction number room bottom plate;
5) excavating a foundation pit of a ground warehouse lower than the bottom plate of the room with the same size, and constructing the bottom plate and an outer wall structure; and after the basement construction of the basement is finished, pulling out the steel sheet piles for recycling.
Furthermore, the height difference part between the house and the ground warehouse is supported by steel sheet piles occupying small space.
Furthermore, the steel sheet pile adopts the steel bar pull rod to be connected with the No. room bed course.
The invention has the beneficial effects that:
by adopting the method, the height difference foundation pit in the narrow space between the house bottom plate and the ground warehouse can be well processed, the problem that the construction space of a supporting system is insufficient due to the dense pile foundation under the house bottom plate is solved, and the displacement and the damage of the house bottom plate and the pile foundation caused by the excavation of the ground warehouse are also avoided. In addition, the steel sheet piles can be leased without maintenance, so that the construction period of a project is greatly shortened, the steel sheet piles can be pulled out and recovered after the project is finished, the economical efficiency is considerable, and the technical feasibility, the working efficiency and the implementation effect of the steel sheet piles are greatly better than those of the traditional mode.
Drawings
Fig. 1 is a schematic view of the treatment of the foundation pit support in the narrow space between the house and the ground depot.
Detailed Description
Embodiments of the present invention are further illustrated below with reference to specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
As shown in fig. 1, a method for treating a foundation pit support in a narrow space between a house and a ground depot comprises the following specific steps:
1) constructing a pile foundation 1 of the size room, and driving a small seam allowance steel sheet pile 7 at the boundary position of the ground warehouse and the size room after the pile foundation is finished;
2) pouring a No. house cushion layer 2, configuring a steel bar net piece 3 in an inner cushion layer 5m away from a junction area of a No. house and a ground warehouse, setting the specification of a steel bar as phi 10@150 (the diameter of the steel bar is 10mm, and the distance is 150mm) in a single-layer bidirectional mode, and setting a horizontal steel bar pull rod phi 20@1000 (the diameter of the pull rod 5 is 10mm, and the distance is 1000mm) at the same time;
3) the side surface of a steel sheet pile 7 is provided with a double-spliced channel steel surrounding purlin 8, a steel bar pull rod penetrates through the steel sheet pile and a reserved hole in the middle of the surrounding purlin, the end part of the surrounding purlin is provided with an anchor head 6 for fixation, the other end of the surrounding purlin is connected and fixed with the steel bar pull rod arranged in the cushion layer 2 to form an anchor-pull supporting system, and the supporting protection is carried out on the pile foundation of the building and the earthwork of the height difference region;
4) after the house bottom plate 4 is poured, excavating a foundation pit of a ground warehouse lower than the house bottom plate, and constructing a bottom plate and an outer wall structure; and after the basement construction of the basement is finished, pulling out the steel sheet piles for recycling.
Claims (3)
1. A foundation pit support treatment method in a narrow space of a house and a ground depot is characterized by comprising the following specific steps:
1) constructing a pile foundation of the size room, and driving a small seam allowance steel sheet pile at the boundary position of the ground warehouse and the size room after the pile foundation is completed;
2) pouring a No. house cushion layer, configuring a steel bar net sheet on an inner cushion layer 5m away from a junction area of the No. house and a ground warehouse, and arranging a horizontal steel bar pull rod;
3) the side surface of the steel sheet pile is provided with a double-spliced channel steel purlin, a steel bar pull rod penetrates through a reserved hole in the middle of the steel sheet pile and the purlin, the end part of the steel sheet pile is fixed by an anchor head, and the other end of the steel sheet pile is fixedly connected with the steel bar pull rod arranged in the cushion layer;
4) a construction number room bottom plate;
5) excavating a foundation pit of a ground warehouse lower than the bottom plate of the room with the same size, and constructing the bottom plate and an outer wall structure; and after the basement construction of the basement is finished, pulling out the steel sheet piles for recycling.
2. The method for treating the foundation pit support in the narrow space of the bungalow and the ground depot according to claim 1, wherein: and the height difference part of the room and the ground depot is supported by steel sheet piles occupying small space.
3. The method for treating the foundation pit support in the narrow space of the bungalow and the ground depot according to claim 1, wherein: and the steel sheet pile is connected with the room cushion layer by a steel bar pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910167398.0A CN109914423B (en) | 2019-03-06 | 2019-03-06 | Foundation pit support treatment method in narrow space of house and ground warehouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910167398.0A CN109914423B (en) | 2019-03-06 | 2019-03-06 | Foundation pit support treatment method in narrow space of house and ground warehouse |
Publications (2)
| Publication Number | Publication Date |
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| CN109914423A CN109914423A (en) | 2019-06-21 |
| CN109914423B true CN109914423B (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910167398.0A Active CN109914423B (en) | 2019-03-06 | 2019-03-06 | Foundation pit support treatment method in narrow space of house and ground warehouse |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111501777B (en) * | 2020-04-20 | 2021-07-16 | 中铁隧道集团二处有限公司 | Construction method for treating bias voltage of open cut foundation pit |
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|---|---|---|---|---|
| JP2003268770A (en) * | 2002-03-18 | 2003-09-25 | Rita Sogo Kikaku:Kk | Earth retaining construction method and reinforcing structure of sheet pile used for this construction method |
| CN102493459A (en) * | 2011-11-24 | 2012-06-13 | 天津二十冶建设有限公司 | Building isolation support construction method for constructing deep foundation in narrow environment |
| CN202745063U (en) * | 2012-08-22 | 2013-02-20 | 中国建筑第六工程局有限公司 | Deep foundation pit steel plate pile and anchor cable shoring system construction structure |
| CN206385548U (en) * | 2016-12-16 | 2017-08-08 | 浙江省交通规划设计研究院 | A kind of tandem anchor slab foundation pit support system with Recyclable anchor rope |
| CN107653886A (en) * | 2017-08-15 | 2018-02-02 | 广东工业大学 | A kind of building supporting construction and its implementation applied to foundation ditch landform |
| CN109235421A (en) * | 2018-10-16 | 2019-01-18 | 中铁第四勘察设计院集团有限公司 | A kind of double steel sheet pile fabricated structure of steel purlin also serving as interim sidewalk |
-
2019
- 2019-03-06 CN CN201910167398.0A patent/CN109914423B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003268770A (en) * | 2002-03-18 | 2003-09-25 | Rita Sogo Kikaku:Kk | Earth retaining construction method and reinforcing structure of sheet pile used for this construction method |
| CN102493459A (en) * | 2011-11-24 | 2012-06-13 | 天津二十冶建设有限公司 | Building isolation support construction method for constructing deep foundation in narrow environment |
| CN202745063U (en) * | 2012-08-22 | 2013-02-20 | 中国建筑第六工程局有限公司 | Deep foundation pit steel plate pile and anchor cable shoring system construction structure |
| CN206385548U (en) * | 2016-12-16 | 2017-08-08 | 浙江省交通规划设计研究院 | A kind of tandem anchor slab foundation pit support system with Recyclable anchor rope |
| CN107653886A (en) * | 2017-08-15 | 2018-02-02 | 广东工业大学 | A kind of building supporting construction and its implementation applied to foundation ditch landform |
| CN109235421A (en) * | 2018-10-16 | 2019-01-18 | 中铁第四勘察设计院集团有限公司 | A kind of double steel sheet pile fabricated structure of steel purlin also serving as interim sidewalk |
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| CN109914423A (en) | 2019-06-21 |
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