CN218894098U - Underground junction foundation pit structure - Google Patents
Underground junction foundation pit structure Download PDFInfo
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- CN218894098U CN218894098U CN202223030552.6U CN202223030552U CN218894098U CN 218894098 U CN218894098 U CN 218894098U CN 202223030552 U CN202223030552 U CN 202223030552U CN 218894098 U CN218894098 U CN 218894098U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model provides an underground junction foundation pit structure, which belongs to the field of underground construction engineering, and comprises a first foundation pit, a second foundation pit, a third foundation pit and a horizontal bearing assembly, wherein a vertical bearing assembly for bearing road and vehicle loads is arranged in the first foundation pit; the second foundation pit is arranged in parallel with the first foundation pit and is arranged on one side of the first foundation pit; the third foundation pit is arranged in parallel with the first foundation pit and is arranged on the other side of the first foundation pit; the horizontal bearing assembly is arranged at the boundary position of the first foundation pit and the second foundation pit. The underground junction foundation pit structure provided by the utility model can ensure that urban roads in a traffic junction area are completed as soon as possible and are communicated with surrounding roads to form a traffic network, so that the influence of underground junction construction on urban traffic is reduced to the greatest extent. The horizontal bearing assembly can be used as the enclosure structure of the first foundation pit and the enclosure structure of the second foundation pit respectively in different construction periods, so that the design is ingenious, and the construction cost and the construction period are saved.
Description
Technical Field
The utility model belongs to the technical field of underground construction engineering, and particularly relates to an underground junction foundation pit structure.
Background
Underground large traffic hubs typically include: underground parking lots, underground supporting businesses, subway stations, and the like. Since urban roads inside the traffic junction need to be penetrated as soon as possible, and form a road network with surrounding roads.
Therefore, the foundation pit structure of the underground junction needs to be reasonably arranged so as to meet the requirement that the urban roads inside the traffic junction are put into operation in advance.
Disclosure of Invention
The utility model aims to provide an underground junction foundation pit structure, and aims to solve the technical problem that the prior art cannot meet the requirement of urban roads in traffic junction for early operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is an underground junction foundation pit structure, comprising:
the first foundation pit is internally provided with a vertical bearing assembly for bearing road and vehicle loads;
the second foundation pit is arranged in parallel with the first foundation pit and is arranged on one side of the first foundation pit;
the third foundation pit is arranged in parallel with the first foundation pit and is arranged on the other side of the first foundation pit;
the horizontal bearing assembly is arranged at the boundary position of the first foundation pit and the second foundation pit.
Preferably, a first anti-floating pile is arranged in the second foundation pit.
Preferably, a second anti-floating pile is arranged in the third foundation pit.
Preferably, the vertical load bearing assembly comprises:
the pile foundation structure is deep into the first foundation pit;
one end of the pile body structure is connected with the pile foundation structure, and the other end of the pile body structure extends out of the first foundation pit to form a connecting end;
and the top plate is connected with the connecting end of the pile body structure.
Preferably, the second anti-floating pile, the first anti-floating pile, the pile body structure and the horizontal bearing component are arranged in parallel.
Preferably, the plate structure is arranged on the first foundation pit, the second foundation pit and the third foundation pit at the same time, part of the plate structure is arranged below the top plate, and the rest of the plate structure is arranged in parallel with the top plate.
Preferably, the horizontal bearing component is a wall enclosure.
Preferably, the first foundation pit is a cover-excavation foundation pit structure; the second foundation pit is an open cut foundation pit structure; the third foundation pit is of a multistage slope foundation pit structure.
The underground junction foundation pit structure provided by the utility model has the beneficial effects that: compared with the prior art, the underground junction foundation pit structure can ensure that urban roads in a traffic junction area are completed as soon as possible, and the underground junction foundation pit structure is communicated with surrounding roads to form a traffic network, so that the influence of underground junction construction on urban traffic is reduced to the greatest extent. The horizontal bearing assembly can be used as the enclosure structure of the first foundation pit and the enclosure structure of the second foundation pit respectively in different construction periods, so that the design is ingenious, and the construction cost and the construction period are saved. The third foundation pit can be excavated downwards in step with the first foundation pit, and the third foundation pit is close to one side of the first foundation pit, and the lateral soil pressure received by the third foundation pit is small, so that a slope protection structure does not need to be constructed, and the engineering cost and the air supply can be saved. The setting of first foundation ditch, second foundation ditch, third foundation ditch mutually independent can furthest reduce mutual interference for the construction progress.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic plan view of a parallel foundation pit arrangement of an underground junction foundation pit structure according to an embodiment of the present utility model;
fig. 2 is a cross-sectional view of a pit structure of an underground junction according to an embodiment of the present utility model;
fig. 3 is a construction flow chart of a foundation pit structure of an underground junction according to an embodiment of the present utility model;
fig. 4 is a second construction flow chart of a foundation pit structure of an underground junction according to an embodiment of the present utility model;
fig. 5 is a construction flow chart III of an underground junction foundation pit structure according to an embodiment of the present utility model;
fig. 6 is a construction flow chart of a foundation pit structure of an underground junction according to an embodiment of the present utility model;
fig. 7 is a construction flow chart of a foundation pit structure of an underground junction according to an embodiment of the present utility model;
fig. 8 is a construction flow chart sixth of a pit structure of an underground junction according to an embodiment of the present utility model;
fig. 9 is a construction flow chart seven of an underground junction foundation pit structure according to an embodiment of the present utility model.
In the figure: 1. a first foundation pit; 2. the second foundation pit; 3. a third foundation pit; 4. a vertical load bearing assembly; 41. pile foundation structure; 42. a pile body structure; 43. a top plate; 5. a horizontal bearing assembly; 6. a first anti-floating pile; 7. a second anti-floating pile; 8. and a plate body structure.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1 to 9, an underground junction foundation pit structure provided by the present utility model will now be described. The underground junction foundation pit structure comprises a first foundation pit 1, a second foundation pit 2, a third foundation pit 3 and a horizontal bearing assembly 5, wherein a vertical bearing assembly 4 for bearing road and vehicle loads is arranged in the first foundation pit 1; the second foundation pit 2 is arranged in parallel with the first foundation pit 1 and is arranged on one side of the first foundation pit 1; the third foundation pit 3 is arranged in parallel with the first foundation pit 2 and is arranged on the other side of the first foundation pit 1; the horizontal bearing component 5 is arranged at the boundary position of the first foundation pit 1 and the second foundation pit 2.
Firstly, constructing a horizontal bearing assembly 5 shared by the first foundation pit 1 and the second foundation pit 2, then constructing a vertical bearing assembly 4 in the area of the first foundation pit 1, then completing urban road construction on the upper part of the first foundation pit 1, and after the urban road is put into operation, continuing to construct the first foundation pit 1 and synchronously constructing the second foundation pit 2 and the third foundation pit 3.
Compared with the prior art, the underground junction foundation pit structure provided by the utility model can ensure that urban roads in a traffic junction area are completed as soon as possible, and the underground junction foundation pit structure is communicated with surrounding roads to form a traffic network, so that the influence of underground junction construction on urban traffic is reduced to the greatest extent. The horizontal bearing component 5 can be used as the enclosure structure of the first foundation pit 1 and the enclosure structure of the second foundation pit 2 respectively in different construction periods, so that the design is ingenious, and the construction cost and the construction period are saved. The third foundation pit 3 can be excavated downwards synchronously with the first foundation pit 1, the side direction soil pressure that the third foundation pit 3 is on one side close to the first foundation pit 1 is little, and the slope protection structure does not need to be constructed, and the engineering cost and the air supply can be saved. The mutually independent arrangement of the first foundation pit 1, the second foundation pit 2 and the third foundation pit 3 can furthest reduce mutual interference and quicken construction progress.
As a specific implementation manner of the embodiment of the present utility model, referring to fig. 1 to 9, a first anti-floating pile 6 is disposed in the second foundation pit 2. The number of the first anti-floating piles 6 is plural. The adjacent first anti-floating piles 6 are arranged in parallel. The first anti-floating pile 6 extends into the second foundation pit 2. And when the excavation operation of the second foundation pit 2 is completely finished, one end of the first anti-floating pile 6 is flush with the pit bottom of the second foundation pit 2.
As a specific implementation manner of the embodiment of the present utility model, referring to fig. 1 to 9, a second anti-floating pile 7 is disposed in the third foundation pit 3. The number of the second anti-floating piles 7 is a plurality. The adjacent second anti-floating piles 7 are arranged in parallel. The second anti-floating pile 7 extends into the third foundation pit 3. And when the excavation operation of the third foundation pit 3 is completely finished, one end of the second anti-floating pile 7 is flush with the pit bottom of the third foundation pit 3.
As an embodiment of the present utility model, referring to fig. 1 to 9, the vertical carrier assembly 4 includes: pile foundation structure 41, pile body structure 42 and top plate 43, pile foundation structure 41 is deep into first foundation pit 1; one end of the pile body structure 42 is connected with the pile foundation structure 41, and the other end extends out of the first foundation pit 1 to be a connecting end; the top plate 43 is connected to the connection end of the pile structure 42. It should be noted that, the connection end of the pile body structure 42 extends out of the first foundation pit 1, where the first foundation pit 1 is in an initial state, that is, the first foundation pit 1 is not excavated.
In this embodiment, the pile foundation structures 41 are provided with a plurality of groups, adjacent pile foundation structures 41 arranged in the transverse direction and/or in the longitudinal direction being equally spaced. The column structures 42 are provided with a plurality of groups, and adjacent column structures 42 arranged in the transverse direction and/or in the longitudinal direction are equally spaced. Specifically, the pile foundation structure 41 is provided in the foundation pit area in the cover-excavated area at equal intervals in the lateral direction. The pile foundation structure 41 is arranged in the area of the first foundation pit 1 at equal intervals in the longitudinal direction. The column structures 42 are in one-to-one correspondence with the pile foundation structures 41. The size of the horizontal space may be the same as or different from the size of the vertical space, so long as the top plate 43 is uniformly supported. The top plate 43 is provided with a plurality of top plates 43, and any top plate 43 is connected with a plurality of column structures 42 at the same time. Adjacent top plates 43 are fixedly connected. The column structure 42 is fixedly connected with the pile foundation structure 41. The column structure 42 is a steel pipe column. The column structure 42 is fixedly connected with the top plate 43.
As a specific implementation manner of the embodiment of the present utility model, the second anti-floating pile 7, the first anti-floating pile 6, the pile body structure 42 and the horizontal bearing component 5 are arranged in parallel. The foundation pit structure of the underground junction can provide reliable supporting force vertically.
As a specific implementation manner of the embodiment of the present utility model, the present utility model further includes a plate body structure 8 that is simultaneously disposed in the first foundation pit 1, the second foundation pit 2, and the third foundation pit 3, wherein a part of the plate body structure 8 is disposed below the top plate 43, and the rest of the plate body structure 8 is disposed in parallel with the top plate 43.
The plate body structure 8 comprises a negative one-layer plate body, a negative two-layer plate body, a negative three-layer plate body and a top plate connecting plate. And the negative one-layer plate body, the negative two-layer plate body, the negative three-layer plate body and the top plate connecting plate are arranged in parallel.
As a specific implementation manner of the embodiment of the present utility model, please refer to fig. 1 to 9 together, the horizontal bearing component 5 is a wall enclosure structure. Specifically, the horizontal bearing component 5 is an underground continuous wall structure.
Specifically, one end (bottom end) of the horizontal bearing assembly 5 is flush with any position of the pile foundation structure 41, and the other end (upper end) is flush with the connection position of the column structure 42 and the top plate 43.
More specifically, the horizontal carrier assembly 5 includes a detachable portion and a connecting portion. The connecting portion is located below. The dismantling part is positioned above. The top of connecting portion is connected with the bottom of demolising the portion, and connecting portion and demolising the portion structure as an organic whole. When the dismantling part is dismantled, the top end of the connecting part can be fixedly connected with the plate body structure 8.
As a specific implementation manner of the embodiment of the present utility model, the first foundation pit 1 is a cover-excavation foundation pit structure; the second foundation pit 2 is an open cut foundation pit structure; the third foundation pit 3 is a multistage slope foundation pit structure.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (8)
1. An underground hub pit structure, comprising:
the first foundation pit (1) is internally provided with a vertical bearing assembly (4) for bearing road and vehicle loads;
the second foundation pit (2) is arranged in parallel with the first foundation pit (1) and is arranged on one side of the first foundation pit (1);
the third foundation pit (3) is arranged in parallel with the first foundation pit (1) and is arranged on the other side of the first foundation pit (1);
the horizontal bearing assembly (5) is arranged at the boundary position of the first foundation pit (1) and the second foundation pit (2).
2. An underground hub pit structure as defined in claim 1, wherein: and a first anti-floating pile (6) is arranged in the second foundation pit (2).
3. An underground hub pit structure as defined in claim 2, wherein: and a second anti-floating pile (7) is arranged in the third foundation pit (3).
4. A subterranean hub pit structure according to claim 3, wherein the vertical bearing assembly (4) comprises:
-a pile foundation structure (41) penetrating into the first foundation pit (1);
one end of the pile body structure (42) is connected with the pile foundation structure (41), and the other end of the pile body structure extends out of the first foundation pit (1) to form a connecting end;
and the top plate (43) is connected with the connecting end of the pile body structure (42).
5. An underground hub pit structure as defined in claim 4 wherein: the second anti-floating pile (7), the first anti-floating pile (6), the pile body structure (42) and the horizontal bearing component (5) are arranged in parallel.
6. An underground shaft pit structure according to claim 4, further comprising a plate structure (8) arranged at the same time in the first pit (1), the second pit (2) and the third pit (3), wherein part of the plate structure (8) is arranged below the top plate (43), and the rest of the plate structure (8) is arranged in parallel with the top plate (43).
7. An underground hub pit structure as defined in claim 1, wherein: the horizontal bearing component (5) is a wall enclosure structure.
8. An underground hub pit structure according to any one of claims 1-7, wherein the first pit (1) is a cover-excavated pit structure; the second foundation pit (2) is an open cut foundation pit structure; the third foundation pit (3) is of a multistage slope foundation pit structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223030552.6U CN218894098U (en) | 2022-11-15 | 2022-11-15 | Underground junction foundation pit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223030552.6U CN218894098U (en) | 2022-11-15 | 2022-11-15 | Underground junction foundation pit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218894098U true CN218894098U (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223030552.6U Active CN218894098U (en) | 2022-11-15 | 2022-11-15 | Underground junction foundation pit structure |
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| Country | Link |
|---|---|
| CN (1) | CN218894098U (en) |
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2022
- 2022-11-15 CN CN202223030552.6U patent/CN218894098U/en active Active
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