CN220433682U - Ultra-deep foundation pit supporting structure - Google Patents
Ultra-deep foundation pit supporting structure Download PDFInfo
- Publication number
- CN220433682U CN220433682U CN202322286184.XU CN202322286184U CN220433682U CN 220433682 U CN220433682 U CN 220433682U CN 202322286184 U CN202322286184 U CN 202322286184U CN 220433682 U CN220433682 U CN 220433682U
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- ultra
- deep foundation
- supporting
- soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002689 soil Substances 0.000 claims abstract description 45
- 239000004568 cement Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- 239000011435 rock Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000004567 concrete Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses an ultra-deep foundation pit supporting structure, which comprises the following components: the foundation pit bottom plate is arranged at the bottom of the ultra-deep foundation pit; supporting retaining walls, wherein the supporting retaining walls are constructed on rock soil at the side edges of the ultra-deep foundation pit space; a triangular body reserved soil table is reserved in the ultra-deep foundation pit space of the root of the supporting retaining wall; and the inclined throwing support is obliquely supported in the foundation pit bottom plate and the supporting retaining wall and clings to the surface of the reserved soil table. The reserved soil table of the triangular body is combined with the inclined throwing support of the inclined support or the supporting retaining wall formed by the triaxial cement soil stirring pile A, the underground diaphragm wall and the triaxial cement soil stirring pile B is independently supported, so that the supporting retaining wall supports loads generated by the inward inclination of the earthwork on the side edge of the ultra-deep foundation pit, the reserved soil table of the triangular body and/or the inclined throwing support of the inclined support can not excessively occupy the inner space of the ultra-deep foundation pit for supporting the retaining wall, and the problem that the installation of the vertical support on the horizontal support can excessively occupy the excavation space for reinforcing the ultra-deep foundation pit is solved, so that the excavation construction is inconvenient.
Description
Technical Field
The utility model relates to an ultra-deep foundation pit supporting structure, and belongs to the technical field of foundation pit construction supporting.
Background
When the foundation pit is excavated, in order to resist the inclined load of the foundation pit in the earthwork of the side edge of the foundation pit, the side edge of the foundation pit is required to be supported, so that the safety of a building on the earthwork of the side edge of the foundation pit is ensured during construction, the depth of the foundation pit reaches 18.67m, and in the deep foundation pit, the horizontal support can not meet the supporting requirement at times.
In the prior art, as in a deep foundation pit combined supporting structure suitable for deep filling in China patent publication No. CN216275714U, a vertical support is arranged on a horizontal support of the prior art to strengthen and support an ultra-deep foundation pit, and although the support to the side edge of the foundation pit can be realized, too much excavation space of the foundation pit is occupied, so that the subsequent excavation construction of the foundation pit is inconvenient.
Disclosure of Invention
In order to solve the technical problems, the utility model provides an ultra-deep foundation pit supporting structure.
The utility model is realized by the following technical scheme.
The utility model provides an ultra-deep foundation pit supporting structure, which comprises the following components:
the foundation pit bottom plate is arranged at the bottom of the ultra-deep foundation pit;
supporting retaining walls, wherein the supporting retaining walls are constructed on rock soil at the side edges of the ultra-deep foundation pit space;
a triangular body reserved soil table is reserved in the ultra-deep foundation pit space of the root of the supporting retaining wall;
and the inclined throwing support is obliquely supported in the foundation pit bottom plate and the supporting retaining wall and clings to the surface of the reserved soil table.
The surface of the reserved soil table is a slope inclined plane with a ratio of 1:1.55, and a reinforcing layer formed by net hanging and concrete spraying is arranged.
A crown beam is arranged at the top of the underground continuous wall; the crown beam is constructed with a baffle towards the top edge of the outer side of the foundation pit.
And a water interception ditch is constructed towards the top edge of the outer side of the foundation pit by the triaxial cement-soil mixing pile A.
And a guardrail is constructed outside the topside of the outer side of the foundation pit in the intercepting ditch.
The supporting retaining wall is composed of a triaxial cement-soil stirring pile A positioned on the outer side of the foundation pit, an underground diaphragm wall positioned in the middle and a triaxial cement-soil stirring pile B positioned on the inner side of the foundation pit.
And a double-pipe jet grouting pile is constructed at a wall joint between the triaxial cement soil mixing pile A and the underground continuous wall.
And the triaxial cement soil mixing pile B is constructed with a waist beam, and the reserved soil table is positioned in an ultra-deep foundation pit space below the waist beam for supporting the root of the retaining wall.
The utility model has the beneficial effects that: the reserved soil table of the triangular body is combined with the inclined throwing support of the inclined support or the supporting retaining wall formed by the triaxial cement soil stirring pile A, the underground diaphragm wall and the triaxial cement soil stirring pile B is independently supported, so that the supporting retaining wall supports loads generated by the inward inclination of the earthwork on the side edge of the ultra-deep foundation pit, the reserved soil table of the triangular body and/or the inclined throwing support of the inclined support can not excessively occupy the inner space of the ultra-deep foundation pit for supporting the retaining wall, and the problem that the installation of the vertical support on the horizontal support can excessively occupy the excavation space for reinforcing the ultra-deep foundation pit is solved, so that the excavation construction is inconvenient.
Drawings
FIG. 1 is a schematic cross-sectional view of the present utility model;
FIG. 2 is a schematic top view in section of the base of FIG. 1;
in the figure: 1-supporting a retaining wall; 11-triaxial cement-soil mixing pile A; 12-underground continuous wall; 13-triaxial cement-soil mixing pile B; 14-double-tube jet grouting piles; 2-crown beam; 3-baffle plates; 4-intercepting ditches; 5-guard bars; 6-waist beams; 7-ultra-deep foundation pit; 71-a foundation pit bottom plate; 8-reserving a soil table; 9-buttress; 91-oblique throwing support.
Detailed Description
The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.
As shown in fig. 1-2.
An ultra-deep foundation pit supporting construction of this application includes:
the supporting retaining wall 1 is constructed in rock soil at the space side edge of the ultra-deep foundation pit 7, the space of the ultra-deep foundation pit 7 is excavated and molded, the supporting retaining wall 1 is composed of a triaxial cement-soil mixing pile A11 at the outer side edge of the foundation pit, an underground diaphragm wall 12 at the middle part and a triaxial cement-soil mixing pile B13 at the inner side edge of the foundation pit, and a double-pipe jet grouting pile 14 is constructed at a wall joint between the triaxial cement-soil mixing pile A11 and the underground diaphragm wall 12.
Crown beam 2 is arranged at the top of underground continuous wall 12; and a baffle plate 3 formed by casting C30 reinforced concrete is constructed on the top edge of the outer side of the foundation pit towards the crown beam 2.
And the triaxial cement mixing pile A11 is constructed with a water intercepting ditch 4 towards the top edge of the outer side of the foundation pit, and is used for converging and discharging water at the top of the ultra-deep foundation pit.
The intercepting ditch 4 is constructed towards the outside of the top edge of the outer side of the foundation pit, and the guardrail 5 plays a role in protecting a construction site.
Triaxial cement soil mixing stake B13 construction is connected with waist rail 6, and the super dark foundation ditch 7 space in the support barricade 1 root of waist rail 6 below reserves the reserved soil platform 8 of triangle body, and reserved soil platform 8 surface is 1:1.55 slope inclined plane and concrete spraying through hanging net.
The foundation pit bottom plate 71 at the bottom of the reserved soil table 8 is constructed with a buttress 9, the buttress 9 is fixedly molded in the foundation pit bottom plate 71 by adopting reinforced concrete pouring, the buttress 9 and the waist beam 6 are provided with inclined throwing supports 91 which are obliquely supported from the foundation pit bottom plate 71 to the supporting retaining wall 1, and the inclined throwing supports 91 are formed by adopting steel pipes. The inclined throwing support 91 is tightly attached to the surface of the reserved soil table 8.
The reserved soil table 8 of the triangular body is combined with the inclined support 91 of the inclined support or independently supports the supporting retaining wall 1 formed by the triaxial cement soil stirring pile A11, the underground continuous wall 12 and the triaxial cement soil stirring pile B13, so that the supporting retaining wall 1 supports the load generated by the side edge earthwork of the ultra-deep foundation pit 7, the reserved soil table 8 of the triangular body and/or the inclined support 91 of the inclined support can not occupy too much the inner space of the ultra-deep foundation pit 7 for supporting the supporting retaining wall 1, and the space operation above the interference of the horizontal support in the prior art can be realized, the construction efficiency is improved, and the problem that the excessive excavation space is inconvenient to excavate due to the fact that the ultra-deep foundation pit is reinforced by installing the vertical support on the horizontal support is solved.
Claims (7)
1. An ultra-deep foundation pit supporting structure, comprising:
the space of the excavated ultra-deep foundation pit (7) is provided with a foundation pit bottom plate (71) at the bottom of the ultra-deep foundation pit (7);
the support retaining wall (1) is constructed on the side rock soil of the space of the ultra-deep foundation pit (7);
a reserved soil table (8) of a triangular body is reserved in the ultra-deep foundation pit (7) space at the root of the supporting and retaining wall (1);
the inclined throwing support (91) is obliquely supported in the foundation pit bottom plate (71) and the supporting retaining wall (1) and clings to the surface of the reserved soil table (8);
the supporting and retaining wall (1) is composed of a triaxial cement-soil stirring pile A (11) positioned on the outer side, an underground continuous wall (12) positioned in the middle and a triaxial cement-soil stirring pile B (13) positioned on the inner side.
2. The ultra-deep foundation pit supporting structure of claim 1, wherein: the surface of the reserved soil table (8) is a slope inclined plane with a ratio of 1:1.55, and a reinforcing layer formed by net hanging and concrete spraying is arranged.
3. The ultra-deep foundation pit supporting structure of claim 1, wherein: a crown beam (2) is arranged at the top of the underground diaphragm wall (12); the crown beam (2) is constructed with a baffle (3) towards the top edge of the outer side of the foundation pit.
4. The ultra-deep foundation pit supporting structure of claim 1, wherein: and a water interception ditch (4) is constructed towards the top edge of the outer side of the foundation pit by the triaxial cement-soil mixing pile A (11).
5. The ultra-deep foundation pit supporting structure of claim 4, wherein: the intercepting ditch (4) is constructed with a guardrail (5) towards the outside of the top edge of the outer side of the foundation pit.
6. The ultra-deep foundation pit supporting structure of claim 1, wherein: and a double-pipe jet grouting pile (14) is constructed at a wall joint between the triaxial cement mixing pile A (11) and the underground continuous wall (12).
7. The ultra-deep foundation pit supporting structure of claim 1, wherein: the triaxial cement mixing pile B (13) is constructed with a waist beam (6), and a reserved soil table (8) is arranged in the ultra-deep foundation pit (7) space at the root of the supporting retaining wall (1) below the waist beam (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322286184.XU CN220433682U (en) | 2023-08-24 | 2023-08-24 | Ultra-deep foundation pit supporting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322286184.XU CN220433682U (en) | 2023-08-24 | 2023-08-24 | Ultra-deep foundation pit supporting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220433682U true CN220433682U (en) | 2024-02-02 |
Family
ID=89697830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322286184.XU Active CN220433682U (en) | 2023-08-24 | 2023-08-24 | Ultra-deep foundation pit supporting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220433682U (en) |
-
2023
- 2023-08-24 CN CN202322286184.XU patent/CN220433682U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102434717B (en) | Construction method of joist steel pipe-jacking work pit | |
| CN205975658U (en) | Steel platform tower crane foundation | |
| CN113250240A (en) | Combined side slope protection structure and process of layered net type gabion and concrete | |
| CN106869138A (en) | A kind of load retaining wall Retaining Structure with Double-row Piles and its foundation ditch excavation method | |
| CN109610473A (en) | A kind of construction method of the large-scale pool structure foundation pit supporting system of municipal administration | |
| CN211172000U (en) | Foundation pit enclosure system with combination of support piles and concrete main structure | |
| CN112942377B (en) | Supporting shear structure and construction method thereof | |
| CN214695636U (en) | Novel foundation pit inclined pile supporting structure | |
| CN109898556A (en) | A kind of underground pipe gallery structure and sunk type construction method | |
| JP3905776B2 (en) | Revetment structure | |
| CN220433682U (en) | Ultra-deep foundation pit supporting structure | |
| CN108035360A (en) | A kind of method for pattern foundation pit supporting structure | |
| CN108005086B (en) | A kind of high buttress counter pull type inclined support structure for pattern foundation pit supporting structure | |
| CN110685287A (en) | Double-row pile foundation pit supporting system with drainage ditch and retaining wall and construction method | |
| CN102605801A (en) | Suspension semi-reverse-construction method for underground circular water tank | |
| CN113585336B (en) | Quick construction method of sinking type concrete mixing station in soft foundation environment | |
| CN116464060A (en) | Construction method for accelerating high-span region structure at high-low span position of basement bottom plate | |
| CN215441921U (en) | Novel support shear structure | |
| CN212506306U (en) | Combined supporting structure of inclined wedge-shaped pile and vertical tubular pile | |
| CN212506305U (en) | Combined supporting structure of inclined wedge-shaped pile and vertical wedge-shaped pile | |
| KR20180040095A (en) | Construction method for soil retaining wall using cap slab | |
| CN211172006U (en) | Front-mounted pile throwing support supporting structure | |
| CN114250744A (en) | Novel ecological combined river slope retaining wall revetment | |
| CN107916798A (en) | The building structure of skyscraper is built suitable for tier building set | |
| CN206706775U (en) | Close to the supporting construction of skyscraper deep pit excavation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |