CN218933135U - Structure of foundation pit supporting pile serving as pile foundation - Google Patents
Structure of foundation pit supporting pile serving as pile foundation Download PDFInfo
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- CN218933135U CN218933135U CN202223284128.4U CN202223284128U CN218933135U CN 218933135 U CN218933135 U CN 218933135U CN 202223284128 U CN202223284128 U CN 202223284128U CN 218933135 U CN218933135 U CN 218933135U
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Abstract
The utility model relates to a structure for supporting piles of a foundation pit and serving as pile foundations, which comprises supporting piles respectively arranged on two sides of the foundation pit, wherein reinforced concrete crown beams are respectively arranged at the tops of the supporting piles on each side, the supporting piles on the corresponding sides are connected into a whole through the crown beams, the crown beams on the two sides are connected through reinforced concrete supporting beams, foundation piles are arranged below a bearing platform positioned in the middle part of one side of the foundation pit, the foundation piles are connected into a whole through the bearing platform and the supporting piles on the middle part of the corresponding side, and a plurality of channel steel retaining plates are arranged on the supporting piles near the middle part of one side of the bearing platform from top to bottom at intervals along the depth direction of the foundation pit. The cast-in-place pile supported by the foundation pit is used as a pile foundation, so that engineering cost can be saved, construction period can be shortened, resources can be effectively utilized, construction difficulty can be reduced, and the method is low in carbon and environment-friendly.
Description
Technical Field
The utility model relates to a foundation pit support and pile foundation, in particular to a structure with a foundation pit support pile serving as a pile foundation.
Background
When the foundation pit is excavated on the current urban road, in many cases, infrastructures such as a power tower, a communication tower and the like exist around the foundation pit. In order to prevent the influence on electric power, communication and the like during the excavation of the foundation pit, the safety of the foundation pit is guaranteed, and the foundation pit is generally removed and changed firstly during the excavation of the foundation pit. Due to the limitation of urban land, the relocation position of facilities such as power towers, communication towers and the like can still be positioned in the range of the foundation pit where construction is completed. The electric power tower, the communication tower and other facilities generally adopt pile foundations, if the foundation pit is shallow, the support adopts steel sheet piles, and the pile foundations are not influenced when the foundation pit is pulled out after construction is completed; if the foundation pit is deeper, the support adopts the bored pile, and the pile foundation of facilities such as power tower, communication tower can be constructed only after the support pile is chiseled out. The construction difficulty of chiseling the bored concrete pile is great, and the progress is slow, influences traffic, and the chisel stake expense is higher moreover, produces a large amount of building rubbish, and is unfriendly to the environment.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a structure with foundation pit supporting piles serving as pile foundations aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows: the utility model provides a foundation ditch support stake is structure of pile foundation concurrently, includes the support stake that sets up in the foundation ditch both sides respectively, and each side the top of support stake is provided with reinforced concrete crown roof beam respectively, just the crown roof beam will correspond the support stake of side and connect into wholly, both sides through reinforced concrete supporting beam connects between the crown roof beam be located the cushion cap below at foundation ditch one side middle part is provided with the foundation stake, just the foundation stake passes through the cushion cap is connected into wholly with the support stake at corresponding one side middle part, is close to on the support stake at cushion cap one side middle part be close to the foundation ditch inboard is followed the depth direction of foundation ditch is provided with a plurality of channel-section steel retaining plates from last to lower interval.
Based on the technical scheme, the utility model can also be improved as follows:
further: the foundation pit is far away from one side of the bearing platform is provided with a plurality of A-shaped supporting piles side by side, the reinforced concrete crown beam on one side of the bearing platform is far away from the plurality of A-shaped supporting piles on the corresponding side, the A-shaped supporting piles on the corresponding side are connected into a whole, the foundation pit is close to the middle of one side of the bearing platform and is provided with a plurality of B-shaped supporting piles, the upper end of the B-shaped supporting piles is fixedly connected with the bearing platform, two ends of the supporting piles are respectively provided with a plurality of A-shaped supporting piles, and the reinforced concrete crown beam on one side of the bearing platform is arranged on the plurality of A-shaped supporting piles and the plurality of B-shaped supporting piles on the corresponding side, and the A-shaped supporting piles and the B-shaped supporting piles on the corresponding side are connected into a whole.
Further: the A-type support pile, the B-type support pile and the foundation pile are all bored piles.
Further: the pile diameter, pile length, pile spacing and pile top elevation of the B-type support pile and the foundation pile are the same, and the B-type support pile and the foundation pile are symmetrically distributed about the central line of the bearing platform.
Further: and the channel steel retaining plate is fixed on one side of the A-shaped support pile, which is close to the foundation pit, through reinforcing steel bar planting.
Further: the inside spraying plain concrete of channel-section steel retaining plate is filled closely knit to set up the reinforcing bar net concrete surface course at the surface.
Further: the gap between the B-type support pile and the underground structure in the foundation pit is filled with plain concrete, and the gap between the A-type support pile and the underground structure in the foundation pit is filled with medium coarse sand.
Compared with the prior art, the utility model has the following advantages and positive effects:
1. the cast-in-place pile supported by the foundation pit is used as a pile foundation, so that engineering cost can be saved, and construction period can be shortened.
2. The environmental pollution and the cost waste caused by pile drilling are avoided, and the pile drilling machine is low-carbon and environment-friendly.
3. The pile spacing of the A-type support piles can be enlarged by adopting the channel steel retaining plates, so that the support piles meet the construction requirements of foundation piles.
4. The gap between the B-type support pile and the underground structure adopts plain concrete backfill, so that the mechanical property of the surrounding soil of the pile is improved.
Drawings
FIG. 1 is a schematic plan view of a foundation pit supporting pile serving as a pile foundation according to an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of a foundation pit supporting pile serving as a pile foundation according to an embodiment of the present utility model;
fig. 3 is a schematic elevation view of a retaining plate for supporting inter-pile channel steel according to an embodiment of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. foundation pit, 2, support piles, 3, reinforced concrete crown beams, 4, reinforced concrete support beams, 5, bearing platforms, 6, foundation piles, 7, channel steel retaining plates, 8, reinforcing steel bars, 9, underground structures, 10, plain concrete, 11 and medium coarse sand.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
As shown in fig. 1 to 3, a foundation pit supporting pile doubles as a pile foundation structure, which comprises supporting piles 2 respectively arranged at two sides of a foundation pit 1, wherein reinforced concrete crown beams 3 are respectively arranged at the tops of the supporting piles 2 at each side, the crown beams 3 connect the supporting piles 2 at the corresponding sides into a whole, the crown beams 3 at two sides are connected through reinforced concrete supporting beams 4, foundation piles 6 are arranged below a bearing platform 5 positioned at the middle part of one side of the foundation pit 1, the foundation piles 6 are connected into a whole through the bearing platform 5 and the supporting piles 2 at the middle part of the corresponding side, and a plurality of channel steel retaining plates 7 are arranged on the supporting piles 2 near the middle part of one side of the bearing platform 5 from top to bottom at intervals along the inner side of the foundation pit 1 in the depth direction of the foundation pit 1.
In one or more embodiments of the present utility model, the supporting piles 2 include a-type supporting piles 21 and B-type supporting piles 22, a plurality of a-type supporting piles 21 are disposed side by side on a side of the foundation pit 1 away from the bearing platform 5, the reinforced concrete crown beam 3 on a side of the foundation pit 1 away from the bearing platform 5 is disposed at the top of the a-type supporting piles 21 on a corresponding side, the a-type supporting piles 21 on a corresponding side are connected into a whole, a plurality of B-type supporting piles 22 are disposed in the middle of a side of the foundation pit 1 near the bearing platform 5, the upper ends of the B-type supporting piles 22 are connected and fixed with the bearing platform 5, a plurality of a-type supporting piles 21 are disposed at both ends of the supporting piles 21, and the reinforced concrete crown beam 3 on a side of the bearing platform 5 is disposed at the top of the a-type supporting piles 21 and the B-type supporting piles 22 on a corresponding side, and the a-type supporting piles 21 and the B-type supporting piles 22 on a corresponding side are connected into a whole.
In one or more embodiments of the present utility model, the a-type support pile 21, the B-type support pile 22 and the foundation pile 6 are bored piles. The bored pile can save engineering cost, reduce construction difficulty and shorten construction period.
In one or more embodiments of the present utility model, the pile diameter, pile length, pile spacing and pile top elevation of the B-shaped support pile 22 and the foundation pile 6 are the same, the B-shaped support pile 22 and the foundation pile 6 are symmetrically distributed about the center line of the bearing platform 5, and the reinforcement of the B-shaped support pile 22 meets the requirements of both the foundation pit support calculation and the pile foundation calculation. The pile diameter, pile length, pile spacing and pile top elevation of the B-shaped support pile 22 and the foundation pile 6 are the same, so that construction can be facilitated, construction efficiency is improved, and the whole stress can be balanced by adopting symmetrical distribution.
It should be noted that, in the embodiment of the present utility model, the collision parts between the a-type support piles 21 and the bearing platforms 5, which are adjacent to the two sides of the crown beam 3 and the B-type support pile 22, should be chiseled after the backfilling of the foundation pit 1 is completed.
In one or more embodiments of the present utility model, the channel steel retaining plate 7 is fixed on the side of the a-type support pile 21 near the foundation pit 1 by reinforcing steel bar 8. The channel steel retaining plates 7 are fixed on one side, close to the foundation pit 1, of the A-shaped supporting piles 21 through the steel bars 8, so that the pile spacing of the A-shaped supporting piles 21 can be enlarged on the premise of meeting the bearing capacity requirement.
In one or more embodiments of the present utility model, the inside spray plain concrete of the channel soil guard plate 7 is densely packed and a reinforcing mesh concrete facing layer is provided on the outer surface.
In one or more embodiments of the present utility model, the gaps between the B-type support piles 22 and the underground structure 9 in the foundation pit 1 are filled with plain concrete 10, and the gaps between the a-type support piles 21 and the underground structure 9 in the foundation pit 1 are filled with medium coarse sand 11.
The construction process of the structure with the foundation pit supporting pile serving as the pile foundation comprises the following steps:
(1) constructing a type A support pile 21 and a type B support pile 22 according to the plane position of the bearing platform 5;
(2) excavating earthwork, and constructing a reinforced concrete crown beam 3 and a reinforced concrete support beam 4;
(3) continuously excavating earthwork to the elevation of the bottom of the foundation pit 1;
(4) steel bars 8 are implanted on the A-shaped support piles 21 which are closely adjacent to the two sides of the B-shaped support pile 22 at equal intervals along the depth direction of the foundation pit, and then channel steel retaining plates 7 are installed at equal intervals;
(5) spraying plain concrete to the inside of the channel steel retaining plate 7 for compaction, and arranging a reinforced mesh concrete surface layer with the thickness of about 60mm on the outside of the plain concrete;
(6) constructing an underground structure 9, and after the underground structure 9 is constructed, adopting C20 plain concrete 10 to fill and densify the gap between the B-type support pile 22 and the underground structure 9, and adopting medium coarse sand 11 to fill and densify the gap between the A-type support pile 21 and the underground structure 9;
(7) removing the reinforced concrete support beam 4, and chiseling the reinforced concrete crown beam 3;
(8) and chiseling out the collision parts of the crown beam 3 and the A-shaped supporting pile 2-1 and the bearing platform 5.
(9) And constructing the foundation pile 6, then constructing the bearing platform 5, and connecting the foundation pile 6 and the B-type support pile 22 into a whole to finish construction.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (7)
1. The foundation pit supporting pile is also used as a pile foundation structure, and is characterized by comprising supporting piles (2) which are respectively arranged on two sides of a foundation pit (1), wherein reinforced concrete crown beams (3) are respectively arranged at the tops of the supporting piles (2) on each side, the crown beams (3) are used for connecting the supporting piles (2) on the corresponding side into a whole, the crown beams (3) on two sides are connected through reinforced concrete supporting beams (4), foundation piles (6) are arranged below a bearing platform (5) which is positioned in the middle part of one side of the foundation pit (1), the foundation piles (6) are connected with the supporting piles (2) on the middle part of the corresponding side through the bearing platform (5) into a whole, and a plurality of channel steel retaining plates (7) are arranged on the supporting piles (2) which are close to the middle part of one side of the bearing platform (5) from top to bottom at intervals along the depth direction of the foundation pit (1).
2. The structure of combining foundation pit support piles as pile foundations according to claim 1, wherein each support pile (2) comprises an A-type support pile (21) and a B-type support pile (22), a plurality of A-type support piles (21) are arranged side by side on one side of each foundation pit (1) far away from each bearing platform (5), a plurality of A-type support piles (21) are arranged on the tops of the corresponding A-type support piles (21) on one side of each foundation pit (1), a plurality of B-type support piles (22) are arranged in the middle of one side of each foundation pit (1) close to each bearing platform (5), a plurality of A-type support piles (21) are fixedly connected with each bearing platform (5) on the upper ends of each B-type support pile (22), a plurality of A-type support piles (21) are respectively arranged on the two ends of each support pile (2), and a plurality of crown (3) on one side of each foundation pit (5) close to each bearing platform (5) are arranged on the corresponding A-type support piles (21) and the tops of the corresponding A-type support piles (21) and the corresponding B-type support piles (22).
3. The foundation pit supporting pile and pile foundation structure according to claim 2, wherein the A-type supporting pile (21), the B-type supporting pile (22) and the foundation pile (6) are all bored piles.
4. The structure of the foundation pit supporting pile as a pile foundation according to claim 2, wherein the pile diameter, pile length, pile spacing and pile top elevation of the B-shaped supporting pile (22) and the foundation pile (6) are the same, and the B-shaped supporting pile (22) and the foundation pile (6) are symmetrically distributed about the center line of the bearing platform (5).
5. The foundation pit supporting pile and pile foundation structure according to claim 2, wherein the channel steel retaining plate (7) is fixed on one side of the A-shaped supporting pile (21) close to the foundation pit (1) through steel bar (8) embedded bars.
6. The foundation pit supporting pile and pile foundation structure according to claim 5, wherein the inside of the channel steel retaining plate (7) is filled with plain concrete densely, and a reinforced mesh concrete surface layer is arranged on the outer surface.
7. The foundation pit supporting pile and pile foundation structure according to claim 2, wherein the gaps between the B-type supporting piles (22) and the underground structures (9) in the foundation pit (1) are filled with plain concrete (10), and the gaps between the A-type supporting piles (21) and the underground structures (9) in the foundation pit (1) are filled with medium coarse sand (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223284128.4U CN218933135U (en) | 2022-12-08 | 2022-12-08 | Structure of foundation pit supporting pile serving as pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223284128.4U CN218933135U (en) | 2022-12-08 | 2022-12-08 | Structure of foundation pit supporting pile serving as pile foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218933135U true CN218933135U (en) | 2023-04-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223284128.4U Active CN218933135U (en) | 2022-12-08 | 2022-12-08 | Structure of foundation pit supporting pile serving as pile foundation |
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| Country | Link |
|---|---|
| CN (1) | CN218933135U (en) |
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2022
- 2022-12-08 CN CN202223284128.4U patent/CN218933135U/en active Active
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