CN117627049A - Water-soil balance floating open cut method for basement construction - Google Patents
Water-soil balance floating open cut method for basement construction Download PDFInfo
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- CN117627049A CN117627049A CN202311622942.9A CN202311622942A CN117627049A CN 117627049 A CN117627049 A CN 117627049A CN 202311622942 A CN202311622942 A CN 202311622942A CN 117627049 A CN117627049 A CN 117627049A
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- construction
- basement
- water
- soil
- finishing
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- 238000010276 construction Methods 0.000 title claims abstract description 65
- 239000002689 soil Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000011435 rock Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 abstract description 7
- 238000009435 building construction Methods 0.000 abstract 1
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a water and soil balance floating open cut method for basement construction, which is characterized in that a basement comprises a bottom ship, a lower layer structure and an upper structure, construction equipment of the basement comprises a foundation pit, and the main construction steps of the water and soil balance floating construction method of the basement are as follows: 1) Finishing the construction of the enclosure structure; 2) Filling water to balance water pressure and soil pressure; 3) Finishing the construction of the foundation pit, and forming a pool in the foundation pit; 4) Finishing the construction of the bottom ship (2); 5) Finishing the construction of the lower layer structure; 6) Finishing construction of the upper structure; 7) Sinking the basement to a design depth; 8) And continuing the subsequent construction until the whole construction of the basement is completed. The invention has the main advantages in the underground building construction that: 1) The underground building can adopt an integral structure without support, so that the problem of water seepage is avoided; 2) No precipitation exists, so that geological disasters caused by precipitation can be avoided from the source.
Description
Technical Field
The invention relates to the technical field of infrastructure, in particular to a water and soil balance floating open cut method for basement construction.
Background
The construction of traditional underground construction is to dig the foundation ditch, make support and precipitation, and its main defect is: 1) When the support is used, the whole underground structure can be made into a thousand open pores, and the water seepage problem is difficult to solve; 2) And the precipitation is carried out, so that geological disasters are easy to cause.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a water-soil balance floating open cut method for basement construction.
In order to achieve the above purpose, the present invention provides the following technical solutions: the basement 1 comprises a bottom ship 2, a lower layer structure 3 and an upper layer structure 4, the bottom ship 2 is positioned below the lower layer structure 3, construction equipment of the basement 1 comprises a foundation pit 6, the foundation pit 6 comprises an enclosure structure 6A, and the main construction steps of the water-soil balance floating construction method of the basement 1 are as follows:
1) Finishing the construction of the enclosure structure 6A;
2) Digging rock soil at the upper part in the enclosure structure 6A, and then filling water 7 into the rock soil;
3) Excavating rock and soil in the enclosure 6A in the water 7, so that the water pressure in the enclosure 6A is balanced with the soil pressure outside the enclosure 6A until the design depth is reached; finishing the construction of the foundation pit 6, and forming a pool 8 in the foundation pit 6;
4) Completing the construction of the bottom ship 2 in the pool 8; or the bottom ship 2 with the partial construction is towed into a pool 8, and the construction of the bottom ship 2 is continuously finished; or the bottom ship 2 with the construction completed is towed into the pool 8;
5) Finishing the construction of the lower structure 3 on the bottom ship 2;
6) Finishing the construction of the upper structure 4 above the lower structure 3;
7) Sinking the basement 1 to a design depth;
8) And continuing the subsequent construction until the whole construction of the basement 1 is completed.
As a further scheme of the invention: the enclosure 6A includes lassen steel sheet piles 6A1.
As a further scheme of the invention: the enclosure 6A includes a diaphragm wall 6A2.
As a further scheme of the invention: the water 7 comprises mud 7A.
In summary, compared with the prior art, the invention has the main advantages that: in the construction of underground buildings, no support exists and no precipitation exists; 1) The underground structure can adopt an integral structure without support and water seepage problem; 2) No precipitation exists, and geological disasters caused by precipitation can be avoided from the source. Especially, the invention has incomparable advantages when the underground construction with shallow underground water level is constructed.
Drawings
Fig. 1 is a schematic view of the structure of a bottom ship 2, a substructure 3 and an superstructure 4 constituting a basement 1;
fig. 2 is a schematic view of the structure of the bottom ship 2 floating in the foundation pit 6;
FIG. 3 is a schematic view of the structure of the substructure 3 submerged under water and the construction of the superstructure 4;
fig. 4 is a schematic view of the structure of the basement 1 when it is submerged to the lowest position;
fig. 5 is a schematic structural view of a larsen steel sheet pile 6A1 constituting the foundation pit 6; is also a schematic structural view of the water tank 8;
FIG. 6 is a sectional view of section A-A of FIG. 5, also of Larson steel sheet pile 6A 1;
fig. 7 is a schematic structural view of the diaphragm wall 6A2 constituting the foundation pit 6.
1 is a basement, 2 is a bottom ship, 3 is a substructure, 4 is an superstructure, 6 is a foundation pit, 6A is an enclosure, 6A1 is lassen steel sheet piles, 6A2 is a diaphragm wall, 7 is water, 7A is slurry, and 8 is a pool.
Description of the embodiments
The technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present invention are included in the scope of protection of the present invention.
Referring to fig. 1-7, in the embodiment of the present invention, the basement 1 includes a bottom ship 2, a lower layer structure 3 and an upper layer structure 4, the bottom ship 2 is located below the lower layer structure 3, the construction equipment of the basement 1 includes a foundation pit 6, the foundation pit 6 includes an enclosure structure 6A, and the main construction steps of the water-soil balance floating construction method of the basement 1 are as follows:
1) Finishing the construction of the enclosure structure 6A;
2) Digging rock soil at the upper part in the enclosure structure 6A, and then filling water 7 into the rock soil;
3) Excavating rock and soil in the enclosure 6A in the water 7, so that the water pressure in the enclosure 6A is balanced with the soil pressure outside the enclosure 6A until the design depth is reached; finishing the construction of the foundation pit 6, and forming a pool 8 in the foundation pit 6;
4) Completing the construction of the bottom ship 2 in the pool 8; or the bottom ship 2 with the partial construction is towed into a pool 8, and the construction of the bottom ship 2 is continuously finished; or the bottom ship 2 with the construction completed is towed into the pool 8;
5) Finishing the construction of the lower structure 3 on the bottom ship 2;
6) Finishing the construction of the upper structure 4 above the lower structure 3;
7) Sinking the basement 1 to a design depth;
8) And continuing the subsequent construction until the whole construction of the basement 1 is completed.
It should be noted that: the top surface of the enclosure structure 6A can be higher than the ground, and can be provided with a reusable anchor rod and an anchor pile, and the upper part of the enclosure structure 6A is connected into a whole through the top parts of the anchor rod and the anchor pile; temporary water retaining walls can be added on the ground outside the periphery of the enclosure structure 6A; in addition, the construction of the upper rock soil in the excavation supporting structure 6A in step 2) can be omitted.
The other description is as follows: the basement 1 can be cast-in-situ, assembled, partially cast-in-situ or partially assembled; furthermore, the basement 1 may be a subway station, and there may be several different basements 1 in the foundation pit 6.
Also to be described is: the superstructure 4 may consist of floor panels, roof panels, beams and columns, and in step 6) the construction of beams and columns may be completed first, and finally the floor panels and roof panels are constructed.
The enclosure 6A includes lassen steel sheet piles 6A1.
The enclosure 6A includes a diaphragm wall 6A2.
The water 7 comprises mud 7A.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention, and it should be noted that the terms "mounted", "connected" should be construed broadly, for example, may be fixedly connected, may be detachably connected, or integrally formed, may be mechanically connected, or may be indirectly connected through intermediaries, and the specific meaning of terms in the present invention may be understood in specific cases.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. A water and soil balance floating open cut method for basement construction is characterized in that a basement (1) comprises a bottom ship (2), a lower layer structure (3) and an upper layer structure (4), the bottom ship (2) is located below the lower layer structure (3), construction equipment of the basement (1) comprises a foundation pit (6), the foundation pit (6) comprises a building envelope (6A), and main construction steps of the water and soil balance floating construction method of the basement (1) are as follows:
1) Finishing the construction of the enclosure structure (6A);
2) Digging rock soil at the upper part in the enclosure structure (6A), and then filling water (7) into the rock soil;
3) Excavating rock and soil in the enclosure structure (6A) in the water (7) to balance the water pressure in the enclosure structure (6A) with the soil pressure outside the enclosure structure (6A) until the design depth is reached; finishing the construction of the foundation pit (6) and forming a pool (8) in the foundation pit (6);
4) Finishing the construction of the bottom ship (2) in the pool (8); or the bottom ship (2) with the completed partial construction is towed into a pool (8), and then the construction of the bottom ship (2) is continuously completed; or the bottom ship (2) with the construction is towed into a pool (8);
5) Finishing the construction of the lower layer structure (3) on the bottom ship (2);
6) Finishing the construction of the upper structure (4) above the lower structure (3);
7) Sinking the basement (1) to a design depth;
8) And continuing the subsequent construction until the whole construction of the basement (1) is completed.
2. A water and soil balanced floating open cut method for basement construction according to claim 1, characterized in that the enclosure structure (6A) comprises lassen steel sheet piles (6A 1).
3. The water and soil balance floating open cut method for basement construction according to claim 1, wherein the enclosure structure (6A) comprises a diaphragm wall (6A 2).
4. A water and soil balanced floating open cut method for basement construction according to claim 2 or 3, characterized in that the water (7) comprises mud (7A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311622942.9A CN117627049A (en) | 2023-11-29 | 2023-11-29 | Water-soil balance floating open cut method for basement construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311622942.9A CN117627049A (en) | 2023-11-29 | 2023-11-29 | Water-soil balance floating open cut method for basement construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117627049A true CN117627049A (en) | 2024-03-01 |
Family
ID=90026530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311622942.9A Pending CN117627049A (en) | 2023-11-29 | 2023-11-29 | Water-soil balance floating open cut method for basement construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117627049A (en) |
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2023
- 2023-11-29 CN CN202311622942.9A patent/CN117627049A/en active Pending
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