CN220266568U - Be applied to combination supporting construction of subway foundation ditch - Google Patents
Be applied to combination supporting construction of subway foundation ditch Download PDFInfo
- Publication number
- CN220266568U CN220266568U CN202321438645.4U CN202321438645U CN220266568U CN 220266568 U CN220266568 U CN 220266568U CN 202321438645 U CN202321438645 U CN 202321438645U CN 220266568 U CN220266568 U CN 220266568U
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- anchor
- piles
- guard piles
- fender post
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims 9
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
- 239000002689 soil Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 7
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a combined supporting structure applied to a subway foundation pit, which comprises guard piles, inner supports and anchor cables, wherein crown beams are arranged at the tops of the guard piles, the inner supports are arranged between the crown beams, one ends of the anchor cables are fixed with the guard piles through anchors, and the other ends of the anchor cables extend into the side walls of the foundation pit; the guard piles are reinforced concrete guard piles, the depth of the guard piles driven into the pit bottom is 0.2-0.4H, and H is the depth of the foundation pit; the inner support is a reinforced concrete support or a steel support; the height of the fender post above the pit bottom is L, one end of the anchor cable penetrates through the fender post, and the position of the anchor cable penetrating out of the fender post is arranged on the fender post with the height of 0.2-0.6L. The utility model fully utilizes the advantages of the inner support and the anchor cable. Compared with the traditional fender post supporting system, the rigidity is higher, and the foundation pit deformation control is more beneficial. Meanwhile, the inner support is only arranged on the crown beam, and the inner support is not arranged at the lower part of the foundation pit, so that convenience in construction of an underground structure is ensured.
Description
Technical Field
The utility model relates to the technical field of subway construction, in particular to a combined supporting structure applied to a subway foundation pit, and particularly relates to a pile, inner support and anchor cable combined supporting structure applied to the subway foundation pit.
Background
In the construction of rail transit, an underground station is constructed by an open cut method. The open cut method requires digging the ground, constructing under the condition of open air, and finally completing the construction of the open cut method through covering and backfilling. The open cut method is suitable for building underground engineering in areas with less ground buildings, less removal and less surface interference.
According to the open cut method, an enclosure structure is sometimes required to be arranged, soil is supported through the enclosure structure, net spraying between bored piles and piles is used as the enclosure structure, an excavator and a heavy dump truck are adopted to conduct layering in the enclosure supporting structure system, segmented earth excavation is unfolded, and net spraying support is inserted in the process to ensure that a foundation pit is in a safe and controlled state.
The utility model discloses a device for realizing the stability of a foundation pit supporting large-span beam string steel support, which is disclosed in the publication No. CN218813742U, wherein single-row piles are driven into the soil body of a foundation pit, the single-row piles are connected with a foundation pit concrete beam through connecting steel beams, and form a more stable supporting structure with the beam string steel support, so that the device is widely applied to various construction sites, and the problem that the large-span beam string cannot be integrally stressed is solved. However, the scheme disclosed by the utility model is more to reinforce the top of the single-row piles, so that the problem of reinforcing the bottom of the single-row piles is omitted, and the whole supporting structure is at risk of instability.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide a pile, inner support and anchor cable combined supporting structure applied to a subway foundation pit. The utility model effectively combines the fender post, the anchor rope and the inner support, and comprises the fender post, the crown beam, the inner support, the anchor rope and the like. The guard pile adopts reinforced concrete filling piles, a crown beam is arranged at the top of the guard pile, an inner support is arranged at the elevation position of the crown beam, and the pile body is connected with a prestressed anchor cable. The stress characteristic is that the inner support bears the soil pressure of the upper part of the foundation pit, and the prestressed anchor cable bears the water and soil pressure of the lower part of the foundation pit after the pile.
The aim of the utility model is realized by the following technical scheme:
the combined supporting structure comprises guard piles, inner supports and anchor cables, wherein crown beams are arranged at the tops of the guard piles, the inner supports are arranged between the crown beams, one ends of the anchor cables are fixed with the guard piles through anchors, and the other ends of the anchor cables extend into the side walls of the foundation pit;
the guard piles are reinforced concrete guard piles, the depth of the guard piles driven into the pit bottom is 0.2-0.4H, and H is the depth of the foundation pit;
the inner support is a reinforced concrete support or a steel support; the height of the fender post above the pit bottom is L, one end of the anchor cable penetrates through the fender post, and the position of the anchor cable penetrating out of the fender post is arranged on the fender post with the height of 0.2-0.6L.
Preferably, the guard piles are connected into a whole through the crown beam.
Preferably, the fender posts are distributed on a virtual circle or rectangle, and the top crown beams of the fender posts are connected into a circle or rectangle.
Preferably, the guard piles are uniformly distributed on a virtual rectangle, the rectangle comprises long sides and short sides, and the crown beams on the two long sides of the rectangle are connected with the inner support.
Preferably, the inner support is located between opposed guard posts provided on both long sides of the rectangle.
Preferably, the inner support is 90 ° to the crown beam after the inner support is secured to the crown beam.
Preferably, the crown beam top is level with the field of construction.
Preferably, a net-sprayed reinforced concrete layer is arranged between the adjacent guard piles.
Preferably, the anchor is a steel structure anchor.
Preferably, the anchorage device comprises an anchor plate, an anchor backing plate and a working clamping piece, wherein the anchor backing plate is used for being in contact with the fender post, the anchor plate is fixed on the anchor backing plate, and the working clamping piece is arranged on the anchor plate and used for fixing the anchor cable.
The utility model has at least the following beneficial effects:
the utility model fully utilizes the advantages of the inner support and the anchor cable. Compared with the traditional fender post supporting system, the rigidity is higher, and the foundation pit deformation control is more beneficial. Meanwhile, the inner support is only arranged on the crown beam, and the inner support is not arranged at the lower part of the foundation pit, so that convenience in construction of an underground structure is ensured.
The utility model effectively combines the fender post, the anchor rope and the inner support, and comprises the fender post, the crown beam, the inner support, the anchor rope and the like. The guard pile adopts reinforced concrete filling pile, the guard pile top is provided with a crown beam, the position of the crown beam is provided with an inner support, and the pile body is connected with a prestressed anchor cable. The stress characteristic is that the inner support bears the soil pressure at the upper part of the foundation pit and controls the horizontal deformation of the top of the foundation pit. The prestressed anchor cable bears the pressure of water and soil behind the lower pile of the foundation pit.
Drawings
The utility model will be described in more detail hereinafter using exemplary embodiments with reference to the accompanying drawings, the different features of which can be combined with each other as desired in accordance with the above description. In particular, if the effect of individual features is necessary for a particular application, these features can be added to existing embodiments according to the above description. Conversely, individual features can be omitted from existing embodiments if their technical effect is not important in a particular application. Similar, identical and functionally identical elements in the figures are given the same reference numerals, insofar as appropriate.
Fig. 1 is a vertical plane of a pile, inner support and anchor cable combined supporting structure applied to subway foundation pit construction;
FIG. 2 is a plan view of the present utility model;
FIG. 3 is a cross-sectional view of the present utility model;
FIG. 4 is a schematic view of an anchor structure;
FIG. 5 is a second schematic view of an anchor structure;
in the figure, 1-fender piles, 2-crown beams, 3-internal supports, 4-anchor cables, 5-anchors, 6-net sprayed reinforced concrete layers, 7-pit bottoms, 8-field levels, 51-anchor plates, 52-anchor backing plates, 53-variable-diameter spiral ribs, 54-working clamping pieces and 55-reserved heads.
Detailed Description
Hereinafter, various embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood, however, that there is no intent to limit the disclosure to the particular forms disclosed herein, but rather, the disclosure is to be interpreted to cover various modifications, equivalents, and/or alternatives to the embodiments of the disclosure. In describing the drawings, like reference numerals may be used to designate like constituent elements.
In the present disclosure, the terminology is used to describe specific embodiments and is not limiting of the disclosure. As used herein, the singular is intended to include the plural as well, unless the context clearly indicates otherwise. In the description, it should be understood that the terms "comprises" or "comprising" indicate the presence of a feature, number, step, operation, structural element, component, or combination thereof, without precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, structural elements, components, or combinations thereof.
It should be understood that specific details are provided in the following description to provide a thorough understanding of the example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, a system may be shown in block diagrams in order to avoid obscuring the examples with unnecessary detail. In other instances, well-known processes, structures, and techniques may not be shown in unnecessary detail in order to avoid obscuring the examples.
Example 1
As shown in fig. 1-3, the combined supporting structure applied to the subway foundation pit comprises a fender post 1, an inner support 3 and an anchor rope 4, wherein a crown beam 2 is arranged at the top of the fender post 1, the inner support 3 is arranged between the crown beams 2, one end of the anchor rope 4 is fixed with the fender post 1 through an anchor 5, and the other end of the anchor rope 4 extends into the side wall of the foundation pit;
the guard piles 1 are reinforced concrete guard piles 1, the depth of the guard piles 1 driven into the pit bottom 7 is 0.2-0.4H (such as 0.3H), and H is the depth of a foundation pit;
the inner support 3 is a reinforced concrete support or a steel support (the inner support 3 is arranged at the position of the crown beam 2, when the foundation pit deformation control requirement is strict, the reinforced concrete support can be adopted, otherwise, the steel support can be adopted), so that the horizontal deformation resistance of the foundation pit roof is enhanced; the height of the fender post 1 above the pit bottom 7 is L, one end of the anchor rope 4 penetrates through the fender post 1, the position of the anchor rope 4 penetrating out of the fender post 1 is arranged on the fender post 1 with the height of 0.2-0.6L (such as 0.5L), and the anchor rope 4 bears the water and soil pressure behind the lower pile of the foundation pit.
The utility model fully utilizes the advantages of the inner support 3 and the anchor cable 4. Compared with the traditional fender pile 1 supporting system, the rigidity is higher, and the foundation pit deformation control is more beneficial. Meanwhile, the inner support 3 is only arranged on the crown beam 2, and the inner support 3 is not arranged at the lower part of the foundation pit, so that convenience in construction of an underground structure is ensured. The crown beam 2 is provided with a first support (an inner support 3) at the elevation position, and a prestressed anchor cable 4 is arranged on the pile body corresponding to the second support. The supporting structure system has the advantages of good stability, convenient construction of the underground main structure and relatively low engineering cost.
In a preferred embodiment all the fender posts 1 are connected as one piece by means of the crown beams 2, emphasizing the connection of the fender posts 1 as one piece, enhancing the compression resistance of the fender posts 1.
In a preferred embodiment, the fender posts 1 are distributed on virtual circles or rectangles, and the top crown beams 2 of the fender posts 1 are connected into a circle or rectangle, and the circle or rectangle is more convenient for construction than an irregular shape.
In a preferred embodiment the fender piles 1 are evenly distributed over a virtual rectangle comprising long sides and short sides, the crown beams 2 on both long sides of the rectangle being connected to the inner support 3. The inner support 3 is located between opposite fender posts 1 arranged on both long sides of the rectangle. The present embodiment emphasizes the relative arrangement of the inner support 3, and the structure is more stable, facilitating construction.
In a preferred embodiment, after the inner support 3 is fixed with the crown beam 2, the inner support 3 is 90 degrees with the crown beam 2, so that the connection stability of the inner support 3 and the crown beam 2 is enhanced.
In a preferred embodiment, the top of the crown beam 2 is flush with a construction site level 8 (construction level), so that the characteristics of foundation pit operation are highlighted, the crown beam 2 is proper in height, and the operation is more standard.
In a preferred embodiment, a layer 6 of net-sprayed reinforced concrete is provided between adjacent fender piles 1. And a reinforced concrete net spray is arranged between piles, a 100-150mm thick net spray reinforced concrete retaining wall (namely a net spray reinforced concrete layer 6) is arranged between fender piles 1, and net spray horizontal longitudinal ribs are welded with reserved steel bar joints in the fender piles 1, so that the stability of the structure is enhanced.
In a preferred embodiment, the anchor 5 is a steel structure anchor 5.
In a preferred embodiment, as shown in fig. 4, the anchorage 5 comprises an anchor plate 51, an anchor pad 52 and a working clip 54, the anchor pad 52 being intended to be in contact with the fender 1, the anchor plate 51 being secured to the anchor pad 52, the working clip 54 being mounted to the anchor plate 51 for securing the anchor cable 4.
In a preferred embodiment, as shown in fig. 5, a reservation head 55 is provided on the back of the anchor pad 52, the reservation head 55 being adapted to connect with a reservation tube provided outside the anchor cable 4 (wire rope).
In a preferred embodiment, a variable diameter spiral rib 53 is arranged outside the reserved head 55, the variable diameter spiral rib 53 comprises a big head and a small head, the small head is fixed with the anchor backing plate 52, and the big head is arranged between the anchor backing plate 52 and the fender post 1 to play a role in buffering pressure. The reducing spiral rib 53 can enhance the cushioning effect as compared to a spiral rib having no reducing.
Unlike the structural embodiment, the present embodiment provides a construction method.
As shown in fig. 1 to 3, the utility model relates to a construction method of a pile, inner support 3 and anchor cable 4 combined support structure applied to subway foundation pit construction, which comprises the following implementation steps:
a. constructing a site level 8, constructing a fender post 1, and pouring a pile top crown beam 2 of the fender post 1;
b. excavating a foundation pit to the position of the inner support 3, and erecting the inner support 3;
c. binding reinforced concrete net spray steel bars, and connecting the net spray steel bars with the fender piles 1 through planting steel bars to manufacture a net spray reinforced concrete layer 6;
d. the pre-stressed anchor cable 4 applied to the lower part of the foundation pit is fixed on the reinforced concrete enclosure pile 1 through the steel structure anchor 5;
e. and excavating a foundation pit to the pit bottom 7.
The utility model aims to provide a pile, inner support 3 and anchor cable 4 combined support structure applied to a subway foundation pit. The utility model effectively combines a fender post 1, an anchor rope 4 and an inner support 3, and consists of the fender post 1, a crown beam 2, the inner support 3 and the anchor rope 4 on the fender post 1. The guard pile 1 adopts reinforced concrete filling piles, reinforced concrete net spraying is arranged between the piles, a crown beam 2 is arranged on the top of the guard pile 1, an inner support 3 is arranged at the elevation position of the crown beam 2, and a prestressed anchor cable 4 is arranged on a pile body corresponding to the second support. The bearing is characterized in that the first support bears the horizontal soil pressure at the upper part of the foundation pit and simultaneously controls the horizontal deformation of the top of the foundation pit. The prestressed anchor cable 4 bears the water and soil pressure behind the lower pile of the foundation pit. Meanwhile, the method has the advantages of convenience in construction, good foundation pit stability and the like. The supporting structure system has the advantages of good stability, convenient construction of the underground main structure and relatively low engineering cost.
While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model. The foregoing description of the preferred embodiment of the utility model is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The combined supporting structure is characterized by comprising guard piles, inner supports and anchor ropes, wherein crown beams are arranged at the tops of the guard piles, the inner supports are arranged between the crown beams, one ends of the anchor ropes are fixed with the guard piles through anchors, and the other ends of the anchor ropes extend into the side walls of the foundation pit;
the guard piles are reinforced concrete guard piles, the depth of the guard piles driven into the pit bottom is 0.2-0.4H, and H is the depth of the foundation pit;
the inner support is a reinforced concrete support or a steel support; the height of the fender post above the pit bottom is L, one end of the anchor cable penetrates through the fender post, and the position of the anchor cable penetrating out of the fender post is arranged on the fender post with the height of 0.2-0.6L.
2. The composite support structure for subway foundation pit according to claim 1, wherein the plurality of fender posts are connected into a whole through the crown beam.
3. The composite support structure for subway foundation pit according to claim 1, wherein the guard piles are distributed on a virtual circle or rectangle, and the top crown beams of the guard piles are connected to form a circle or rectangle.
4. A composite support structure for a subway foundation pit according to claim 3 wherein the guard piles are uniformly distributed on a virtual rectangle, the rectangle comprising long sides and short sides, and the crown beams on the two long sides of the rectangle connecting the inner supports.
5. A composite support structure for a subway foundation pit according to claim 1 wherein the inner support is located between opposed fender posts provided on both long sides of the rectangle.
6. The composite support structure for subway foundation pit according to claim 1 or 5, wherein the inner support is 90 ° to the crown beam after the inner support is fixed to the crown beam.
7. The composite support structure for a subway foundation pit according to claim 1, wherein the top of the crown beam is level with the construction site.
8. The composite support structure for subway foundation pit according to claim 1, wherein a net-sprayed reinforced concrete layer is arranged between adjacent fender piles.
9. The composite support structure for a subway foundation pit according to claim 1, wherein the anchor is a steel structure anchor.
10. A composite support structure for a subway foundation pit according to claim 1 or 9 wherein the anchorage means comprises an anchor plate for contact with the fender post, an anchor pad fixed to the anchor pad, and a working clip mounted to the anchor plate for securing the anchor cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321438645.4U CN220266568U (en) | 2023-06-07 | 2023-06-07 | Be applied to combination supporting construction of subway foundation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321438645.4U CN220266568U (en) | 2023-06-07 | 2023-06-07 | Be applied to combination supporting construction of subway foundation ditch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220266568U true CN220266568U (en) | 2023-12-29 |
Family
ID=89318313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321438645.4U Active CN220266568U (en) | 2023-06-07 | 2023-06-07 | Be applied to combination supporting construction of subway foundation ditch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220266568U (en) |
-
2023
- 2023-06-07 CN CN202321438645.4U patent/CN220266568U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102352632B (en) | Anchor rod sheet pile combined structure and method for reinforcing high filling body on one side of slope | |
| CN106759376B (en) | For closing on the construction method of the Anchored Sheet Pile Wall for Excavation system of existing underground structure | |
| CN105155558A (en) | Combined retaining structure and construction method thereof | |
| CN210529712U (en) | Construction structure for foundation pit crossing underground pipeline area | |
| CN201053123Y (en) | Deep foundation ditch tower crane platform base frame | |
| CN103343532B (en) | Pre-stressed anchor cable pile-slab wall | |
| CN109914422A (en) | A kind of steel pipe and soil nailing combined type foundation pit supporting construction and construction method | |
| CN113417300B (en) | Slope support system and construction method thereof | |
| CN110499928A (en) | The construction method and basement of existing building basement raising chamber height | |
| CN108035360B (en) | A method of for pattern foundation pit supporting structure | |
| CN220266568U (en) | Be applied to combination supporting construction of subway foundation ditch | |
| CN111894026A (en) | Tunnel type pile foundation bearing platform combined anchorage structure and installation method thereof | |
| CN217974413U (en) | Deep and shallow foundation pit supporting construction structure | |
| CN108005086B (en) | A kind of high buttress counter pull type inclined support structure for pattern foundation pit supporting structure | |
| CN111005389A (en) | Construction method of unloading plate type supporting structure | |
| CN206337566U (en) | Foundation ditch vertical prestressing anchor pole supporting construction | |
| CN213709548U (en) | Advanced structure system for positive and negative zero beam plates in deep foundation pit building seat area | |
| CN107916798A (en) | The building structure of skyscraper is built suitable for tier building set | |
| CN213476918U (en) | H-shaped pile anchor retaining structure | |
| CN201232189Y (en) | Composite soil nail wall supporting construction for adding piers | |
| CN210117724U (en) | Garage foundation structure | |
| CN1078518A (en) | Method with U-steel, anchor concrete stake supporting deep-foundation side wall | |
| CN210597068U (en) | Hang foot formula and block stone wall structure | |
| CN206408631U (en) | Anchored Sheet Pile Wall for Excavation system for closing on existing underground structure | |
| CN105756069B (en) | Stack can assembly type branch protection slab and its construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |