CN216920358U - Deep and large foundation pit supporting system - Google Patents
Deep and large foundation pit supporting system Download PDFInfo
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- CN216920358U CN216920358U CN202123318386.5U CN202123318386U CN216920358U CN 216920358 U CN216920358 U CN 216920358U CN 202123318386 U CN202123318386 U CN 202123318386U CN 216920358 U CN216920358 U CN 216920358U
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Abstract
The utility model discloses a deep and large foundation pit supporting system, which comprises a cement-soil mixing wall and a steel underground continuous wall; the steel underground continuous wall is inserted into the cement soil mixing wall; the steel underground continuous wall comprises a plurality of H-shaped steel which are sequentially spliced, the flange plate end parts of the H-shaped steel are provided with locking notch structures, and the adjacent H-shaped steel are spliced through the locking notch structures. The deep and large foundation pit supporting system has two key functions of water stopping and soil retaining of a foundation pit supporting structure by preventing seepage through the cement-soil mixing wall and bearing most of soil pressure through the steel underground continuous wall. The steel underground continuous wall is formed by splicing the lock catch structures, the rigidity of the structure is greatly improved compared with the rigidity of a common steel plate through interval interpolation, and the steel underground continuous wall can be suitable for ultra-deep foundation pits under complex environmental conditions. The deep and large foundation pit supporting system has the advantages of stable quality, good supporting effect, convenience and quickness in construction, high construction speed, convenience in recycling of H-shaped steel, strong operability and strong practicability.
Description
Technical Field
The utility model relates to a deep and large foundation pit supporting system, and belongs to the technical field of foundation pit construction.
Background
With the increasingly tense urban land, the development of underground space is more and more emphasized, corresponding foundation pit engineering is continuously developed in a larger and deeper direction, and the surrounding environmental conditions and engineering geological conditions of the foundation pit engineering become more complex and severe. The traditional plate type supporting system is usually adopted for a deep and large foundation pit under the existing urban complex environmental condition, and the supporting wall of the traditional plate type supporting system mainly comprises an underground continuous wall, a cast-in-place pile, a cement mixing pile inserted section steel and the like. These conventional processes often have their limitations, or high cost, or poor deformation control capability, or inability to combine water stop functions, etc.
SUMMERY OF THE UTILITY MODEL
The application provides a deep and large foundation pit supporting system for solve the above-mentioned problem that current excavation supporting construction exists.
In order to solve the technical problems, the utility model comprises the following technical scheme:
a deep and large foundation pit supporting system comprises a cement soil stirring wall and a steel underground continuous wall;
the steel underground continuous wall is inserted into the cement-soil mixing wall;
the steel underground continuous wall comprises a plurality of H-shaped steel which are sequentially spliced, the flange plate end parts of the H-shaped steel are provided with locking notch structures, and adjacent H-shaped steel are spliced with each other through the locking notch structures.
Furthermore, the thickness of the cement soil mixing wall is 550 mm-1200 mm.
Further, the cross-sectional dimension of the H-shaped steel is as follows: the width is 700 mm-1000 mm, and the height is 300 mm-1000 mm.
Furthermore, the H-shaped steel adopts a structural form of H-shaped steel I, one end of a flange plate of the H-shaped steel I is of a C-shaped structure, and the other end of the flange plate of the H-shaped steel I is of a T-shaped structure;
the C-shaped structure and the T-shaped structure of two adjacent H-shaped steel I are spliced to form a C-T locking structure.
Further, the steel underground continuous wall includes two kinds of H shaped steel structures, marks as H shaped steel two and H shaped steel three, and the flange plate both ends of H shaped steel two are C type structure, and the flange plate both ends of H shaped steel three are T type structure, and adjacent H shaped steel two, C shape structure between the H shaped steel three are pegged graft with T shape structure and are formed C-T fore shaft structure.
Furthermore, the H-shaped steel adopts a structural form of H-shaped steel IV, one end of a flange plate of the H-shaped steel IV is of a C-shaped structure, and the other end of the flange plate of the H-shaped steel IV is of an O-shaped structure;
the C-shaped structure and the O-shaped structure of two adjacent H-shaped steel I are spliced to form a C-O locking structure.
Further, the steel underground continuous wall includes two kinds of H shaped steel structures, marks as H shaped steel two and H shaped steel five, and the flange plate both ends of H shaped steel two are C type structure, and the flange plate both ends of H shaped steel five are O type structure, and adjacent H shaped steel two, C shape structure between the H shaped steel five are pegged graft with O shape structure and are formed C-O fore shaft structure.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following advantages and positive effects: the deep and large foundation pit supporting system has two key functions of water stopping and soil retaining of a foundation pit supporting structure through seepage prevention of the cement-soil mixing wall and bearing of most of soil pressure by the steel underground continuous wall. The steel underground continuous wall is formed by splicing the lock catch structures, compared with the common steel plate interval interpolation, the rigidity of the structure is greatly improved, and the steel underground continuous wall can be suitable for ultra-deep foundation pits (the excavation depth is more than or equal to 11.0m) under the complex environment condition. The thickness of the stirring wall and the section of the profile steel can be adjusted according to actual conditions, and the application range is wide. The deep and large foundation pit supporting system has the advantages of stable quality, good supporting effect, convenience and quickness in construction, high construction speed, convenience in recycling H-shaped steel, strong operability and strong practicability.
Drawings
FIG. 1 is a cross-sectional view of a deep and large foundation pit support system of the present invention;
FIG. 2 is a cross-sectional view of a first H-section steel of the present invention;
FIG. 3 is a schematic view of a C-T shaped locking notch of the present invention;
FIG. 4 is a cross-sectional view of a second H-shaped steel according to the present invention;
FIG. 5 is a cross-sectional view of a third H-section steel according to the present invention;
FIG. 6 is a cross-sectional view of a fourth H-section steel according to the present invention;
FIG. 7 is a schematic view of a C-O lock of the present invention;
FIG. 8 is a cross-sectional view of an H-section steel V of the present invention.
The numbers in the figures are as follows:
10-cement soil mixing wall;
20-steel underground continuous wall; 21-H section steel I; 22-H section steel II; 23-H section steel III; 24-H section steel IV; 25-H section steel five; a 201-C shaped structure; 202-T shaped structure; 203-O-shaped structure.
Detailed Description
The deep and large foundation pit supporting system provided by the utility model is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent in conjunction with the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Example one
As shown in fig. 1, the deep and large foundation pit supporting system according to the present embodiment includes a cement mixing wall 10 and a steel underground continuous wall 20, and the steel underground continuous wall 20 is inserted into the cement mixing wall 10. The steel underground continuous wall 20 comprises a plurality of H-shaped steel 20 'which are sequentially spliced, the flange plate end parts of the H-shaped steel 20' are provided with locking structures, and adjacent H-shaped steel is spliced with each other through the locking structures. By way of example, the thickness D of the cement-soil mixing wall 10 is 550mm to 1200mm, and the cross-sectional dimension of the H-shaped steel 20' is: the width B is 700 mm-1000 mm, the height H is 300 mm-1000 mm, and D is larger than H.
As shown in FIG. 2, the H-shaped steel adopts the structural form of a first H-shaped steel 21, and the flange plate of the first H-shaped steel 21 is provided with a C-shaped structure 201 at one end and a T-shaped structure 202 at the other end. Referring to fig. 1 to 3, the C-shaped structures 201 and the T-shaped structures 202 of two adjacent H-shaped steels one 21 are inserted to form a C-T locking structure.
As another embodiment, referring to fig. 1 and 3 to 5, the steel underground diaphragm wall 20 includes two H-shaped steel structures, which are denoted as H-shaped steel two 22 and H-shaped steel three 23, two ends of a flange plate of the H-shaped steel two 22 are both C-shaped structures, two ends of a flange plate of the H-shaped steel three 23 are both T-shaped structures, and a C-shaped structure 201 between the adjacent H-shaped steel two 22 and H-shaped steel three 23 is inserted into a T-shaped structure 202 to form a C-T locking structure.
As another embodiment, as shown in FIG. 6, the H-shaped steel adopts the structural form of an H-shaped steel IV 24, and the flange plate of the H-shaped steel IV 24 is provided with a C-shaped structure 201 at one end and an O-shaped structure 203 at the other end. Referring to fig. 6 and 7, the C-shaped structures 201 and the O-shaped structures 203 of two adjacent H-shaped steel sections one 21 are inserted to form a C-O locking notch structure.
As another embodiment, referring to fig. 4, 7 and 8, the steel underground diaphragm wall 20 includes two H-shaped steel structures, which are denoted as H-shaped steel second 22 and H-shaped steel fifth 25, two ends of a flange plate of the H-shaped steel second 22 are both C-shaped structures, two ends of a flange plate of the H-shaped steel fifth 25 are both O-shaped structures, and a C-shaped structure 201 between the adjacent H-shaped steel second 22 and H-shaped steel fifth 25 is inserted into an O-shaped structure 203 to form a C-O locking structure.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. A deep and large foundation pit supporting system which is characterized in that,
comprises a cement-soil mixing wall and a steel underground continuous wall;
the steel underground continuous wall is inserted into the cement-soil mixing wall;
the steel underground continuous wall comprises a plurality of H-shaped steel which are sequentially spliced, the flange plate end parts of the H-shaped steel are provided with locking notch structures, and adjacent H-shaped steel are spliced with each other through the locking notch structures.
2. The deep and large foundation pit supporting system of claim 1,
the thickness of the cement soil mixing wall is 550 mm-1200 mm.
3. The deep and large foundation pit supporting system of claim 1,
the section size of the H-shaped steel is as follows: the width is 700 mm-1000 mm, and the height is 300 mm-1000 mm.
4. The deep and large foundation pit supporting system of claim 1,
the H-shaped steel adopts the structural form of the H-shaped steel I, one end of a flange plate of the H-shaped steel I is of a C-shaped structure, and the other end of the flange plate of the H-shaped steel I is of a T-shaped structure;
the C-shaped structure and the T-shaped structure of two adjacent H-shaped steel I are spliced to form a C-T locking structure.
5. The deep and large foundation pit supporting system of claim 1,
the steel underground diaphragm wall comprises two H-shaped steel structures, namely an H-shaped steel II and an H-shaped steel III, wherein the two ends of the flange plate of the H-shaped steel II are C-shaped structures, the two ends of the flange plate of the H-shaped steel III are T-shaped structures, and the C-shaped structures between the adjacent H-shaped steel II and the H-shaped steel III are spliced with the T-shaped structures to form C-T locking structures.
6. The deep and large foundation pit supporting system of claim 1,
the H-shaped steel adopts the structural form of H-shaped steel IV, one end of a flange plate of the H-shaped steel IV is of a C-shaped structure, and the other end of the flange plate of the H-shaped steel IV is of an O-shaped structure;
the C-shaped structure and the O-shaped structure of two adjacent H-shaped steel I are spliced to form a C-O locking structure.
7. The deep and large foundation pit supporting system of claim 1,
the steel underground diaphragm wall comprises two H-shaped steel structures, namely H-shaped steel II and H-shaped steel V, wherein the two ends of the flange plate of the H-shaped steel II are C-shaped structures, the two ends of the flange plate of the H-shaped steel V are O-shaped structures, and the C-shaped structures and the O-shaped structures between the adjacent H-shaped steel II and the H-shaped steel V are spliced to form a C-O locking structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123318386.5U CN216920358U (en) | 2021-12-27 | 2021-12-27 | Deep and large foundation pit supporting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123318386.5U CN216920358U (en) | 2021-12-27 | 2021-12-27 | Deep and large foundation pit supporting system |
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| Publication Number | Publication Date |
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| CN216920358U true CN216920358U (en) | 2022-07-08 |
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| CN202123318386.5U Active CN216920358U (en) | 2021-12-27 | 2021-12-27 | Deep and large foundation pit supporting system |
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| CN (1) | CN216920358U (en) |
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2021
- 2021-12-27 CN CN202123318386.5U patent/CN216920358U/en active Active
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