CN114351721A - Shear wall structure for support conversion of deep foundation pit and construction method thereof - Google Patents
Shear wall structure for support conversion of deep foundation pit and construction method thereof Download PDFInfo
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- CN114351721A CN114351721A CN202210048999.1A CN202210048999A CN114351721A CN 114351721 A CN114351721 A CN 114351721A CN 202210048999 A CN202210048999 A CN 202210048999A CN 114351721 A CN114351721 A CN 114351721A
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- shear wall
- shear
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000012946 outsourcing Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
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- 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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a shear wall structure for support conversion of a deep foundation pit and a construction method thereof. After the shear wall structure is formed, the support influencing the construction influence of the basement and the superstructure can be dismantled and converted in advance, the main body structure construction is facilitated, and the shear wall structure is suitable for the construction of deep foundation pits of most house buildings, municipal works, hydraulic structures and the like.
Description
Technical Field
The invention relates to an underground engineering construction technology, in particular to a shear wall structure for support conversion of a deep foundation pit and a construction method thereof.
Background
The continuous promotion of the urbanization process, the land occupation is increasingly tense, and the application of foundation pit engineering in the field of buildings is increasingly wide. In some building fields, the requirement on the construction period is tense, but the basement structure is usually constructed upwards after the horizontal support of the foundation pit support is dismantled, so that the construction progress is limited to a certain extent, and in order to meet the construction period node target of the main structure, a shear wall structure for support conversion of the deep foundation pit needs to be adopted, so that most of the foundation pit can be constructed in the basement and upper structure firstly.
Disclosure of Invention
The invention aims to provide a shear wall structure for support conversion of a deep foundation pit and a construction method thereof, and solves the problem of slow construction progress of a basement structure in large-area foundation pit engineering.
In order to realize the construction purpose, the invention adopts the following scheme:
a shear wall structure for support conversion of a deep foundation pit comprises a shear wall, a shear groove, a concrete structure externally wrapped by vertical steel columns and an upper support structure, wherein the shear wall is of a trapezoidal structure and is arranged at a position where support conversion is needed, the bottom of the shear wall is arranged on a basement structure floor, and the top of the shear wall is connected with the support structure needing conversion; the shear groove is arranged at a bottom plate of the shear wall structure; the vertical steel upright column outer wrapping concrete structure supports the steel upright column outer wrapping concrete at the support conversion position.
Furthermore, the upper supporting structure is a support which needs to be converted in the original supporting system.
Furthermore, the shear groove is of a downward turning structure and is integrally cast with the bottom of the shear wall structure and the basement structure bottom plate.
Furthermore, the shear wall is in lap joint with the support steel upright posts through horizontal steel bars.
Further, the upper support structure needs to be roughened and provided with annular shear grooves, wherein the outer concrete is wrapped in a connecting area of the upper support structure and the top of the shear wall structure.
A construction method of a shear wall structure for supporting and converting deep foundation pits comprises the following specific steps:
the method comprises the following steps: carrying out stress analysis on the shear wall structure, and determining the specific size and reinforcing bars of the shear wall structure;
step two: integrally pouring the bottom of the shear wall structure and a basement structure bottom plate, and arranging a downward-turning shear groove at the basement structure bottom plate;
step three: the concrete externally wrapped on the supporting vertical steel upright posts and the shear wall structure are integrally cast for reinforcement;
step four: in a connecting area between a supporting structure to be converted and the top of a shear wall structure, chiseling concrete outside the supporting structure, arranging an annular shear groove, connecting the supporting structure and the top of the shear wall structure in a manner of adding stirrups and joint bars, and pouring concrete to form a whole;
step five: after the shear wall structure is formed and reaches the design strength, the horizontal supporting structure influencing the construction influence of the basement and the superstructure is dismantled and converted, so that the main body structure is constructed conveniently.
The invention has the beneficial effects that:
the shear wall structure for support conversion of the deep foundation pit and the construction method thereof effectively solve the problem that a large-area foundation pit engineering central area needs to be constructed quickly, greatly save the construction period, form an effective support changing system, are beneficial to deformation control of the foundation pit and ensure the stability of the foundation pit.
Drawings
Fig. 1 is a schematic structural view of a shear wall for support conversion of a deep foundation pit according to the present invention;
FIG. 2 is a schematic plan view of a shear wall structure for support conversion of a deep foundation pit according to the present invention;
FIG. 3 is an elevation view of a shear wall structure of the present invention for support conversion of a deep foundation pit;
FIG. 4 is a top view of a shear wall structure of the present invention for support conversion of a deep foundation pit;
fig. 5 is a construction flow chart of the shear wall structure for support conversion of a deep foundation pit according to the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples. These examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention, which is to be given the full breadth of the present disclosure, and any variations or modifications within the skill of the art after reading the teachings herein, may be made, and such equivalents are intended to fall within the scope of the invention as defined in the claims appended hereto.
As shown in fig. 1, 2, 3 and 4, the shear wall structure for supporting and converting a deep foundation pit of the invention comprises a shear wall 2, a vertical steel column outer concrete structure 3, an upper support structure 4 and a shear groove 5.
The shear wall 2 is of a trapezoidal structure and is arranged at a position needing to be supported and converted, wherein the bottom of the shear wall 2 is arranged on the basement structure floor 1, and the top of the shear wall is connected with an upper support structure 4 needing to be converted; the shear groove 5 is arranged at the bottom plate of the structure of the shear wall 2; the vertical steel upright post outer wrapping concrete structure 3 supports steel upright post outer wrapping concrete at the support conversion position, and the upper supporting structure 4 is a support which needs to be converted in an original supporting system.
As shown in fig. 3, the shear groove 5 is of a downward-turning structure and is integrally cast with the bottom of the shear wall 2 and the basement structure bottom plate 1.
As shown in fig. 3, the support-changing shear wall 2 is overlapped with the support steel columns through horizontal steel bars.
As shown in fig. 3, the upper support structure 4 requires roughening of the outer concrete of the connection area with the top of the shear wall 2 structure and providing an annular shear groove.
As shown in fig. 5, a construction method of the shear wall structure for support conversion of the deep foundation pit includes the following steps:
the method comprises the following steps: carrying out stress analysis on the shear wall 2 structure, and determining the specific size and reinforcing bars of the shear wall;
step two: integrally pouring the bottom of the shear wall 2 and the basement structure bottom plate 1, and arranging a downward-turning shear groove 5 at the bottom plate;
step three: supporting the vertical steel upright posts to wrap concrete, and integrally pouring the concrete and the shear wall 2 structure for reinforcement;
step four: in the connecting area of the top of the supporting structure 4 and the shear wall 2 which need to be converted, the concrete is coated outside the supporting structure by chiseling, an annular shear groove is formed, the concrete is connected with the top of the shear wall 2 in a mode of newly adding stirrups and dowel bars, and the poured concrete forms a whole.
Step five: after the shear wall 2 structure is formed and reaches the design strength, the horizontal supporting structure influencing the construction influence of the basement and the upper structure is dismantled and converted, so that the construction of the main structure is facilitated.
Claims (6)
1. The utility model provides a shear force wall structure for support conversion of deep basal pit, includes shear force wall, shear force groove, vertical steel column outsourcing concrete structure, upper portion bearing structure, its characterized in that: the shear wall is of a trapezoidal structure and is arranged at a position where support conversion is needed, wherein the bottom of the shear wall is arranged on a basement structure floor, and the top of the shear wall is connected with the support structure needing conversion; the shear groove is arranged at a bottom plate of the shear wall structure; the vertical steel upright column outer wrapping concrete structure supports the steel upright column outer wrapping concrete at the support conversion position.
2. The shear wall structure for support conversion of a deep foundation pit according to claim 1, wherein: the upper supporting structure is a support which needs to be converted in an original supporting system.
3. The shear wall structure for support conversion of a deep foundation pit according to claim 1, wherein: the shear groove is of a downward turning structure and is integrally poured with the bottom of the shear wall structure and the basement structure bottom plate.
4. The shear wall structure for support conversion of a deep foundation pit according to claim 1, wherein: the shear wall is in lap joint with the support steel upright posts through horizontal steel bars.
5. The shear wall structure for support conversion of a deep foundation pit according to claim 1, wherein: and the upper supporting structure needs to be roughened and externally coated with concrete in a connecting area of the top of the shear wall structure, and is provided with an annular shear groove.
6. A construction method of a shear wall structure for support conversion of a deep foundation pit, which is characterized by comprising the following steps:
the method comprises the following steps: carrying out stress analysis on the shear wall structure, and determining the specific size and reinforcing bars of the shear wall structure;
step two: integrally pouring the bottom of the shear wall structure and a basement structure bottom plate, and arranging a downward-turning shear groove at the basement structure bottom plate;
step three: the concrete externally wrapped on the supporting vertical steel upright posts and the shear wall structure are integrally cast for reinforcement;
step four: in a connecting area between a supporting structure to be converted and the top of a shear wall structure, chiseling concrete outside the supporting structure, arranging an annular shear groove, connecting the supporting structure and the top of the shear wall structure in a manner of adding stirrups and joint bars, and pouring concrete to form a whole;
step five: after the shear wall structure is formed and reaches the design strength, the horizontal supporting structure influencing the construction influence of the basement and the superstructure is dismantled and converted, so that the main body structure is constructed conveniently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210048999.1A CN114351721A (en) | 2022-01-17 | 2022-01-17 | Shear wall structure for support conversion of deep foundation pit and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210048999.1A CN114351721A (en) | 2022-01-17 | 2022-01-17 | Shear wall structure for support conversion of deep foundation pit and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114351721A true CN114351721A (en) | 2022-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210048999.1A Pending CN114351721A (en) | 2022-01-17 | 2022-01-17 | Shear wall structure for support conversion of deep foundation pit and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114351721A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002953A (en) * | 2010-12-02 | 2011-04-06 | 上海市第四建筑有限公司 | Method for changing support of foundation pit enclosing rib plates |
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2022
- 2022-01-17 CN CN202210048999.1A patent/CN114351721A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002953A (en) * | 2010-12-02 | 2011-04-06 | 上海市第四建筑有限公司 | Method for changing support of foundation pit enclosing rib plates |
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Application publication date: 20220415 |