CN114960686A - Foundation pit supporting device and foundation pit supporting method - Google Patents

Foundation pit supporting device and foundation pit supporting method Download PDF

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Publication number
CN114960686A
CN114960686A CN202210835045.5A CN202210835045A CN114960686A CN 114960686 A CN114960686 A CN 114960686A CN 202210835045 A CN202210835045 A CN 202210835045A CN 114960686 A CN114960686 A CN 114960686A
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China
Prior art keywords
rod
foundation
foundation pit
reinforcing
side wall
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CN202210835045.5A
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Chinese (zh)
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CN114960686B (en
Inventor
潘岗
王蒙
李杰刚
王腾飞
侯永革
刘学涛
陈铭慧
赵玉海
杨裕
左国文
邸凯强
王丽
金路
孙忠泽
杨悦
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Tangshan Zhongdi Engineering Survey Co ltd
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Tangshan Zhongdi Engineering Survey Co ltd
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
    • Y02A10/23—Dune restoration or creation; Cliff stabilisation
    • 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
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The utility model relates to a foundation ditch supporting device and foundation ditch supporting method relates to the field of foundation ditch supporting, including pre-buried a plurality of foundation piles in the foundation ditch, all be connected with the reinforcement plate between per two adjacent foundation piles, the reinforcement plate includes the frame of being connected with the foundation pile, it has the backup pad that is used for moving and support tight foundation ditch lateral wall to the direction that is close to the foundation ditch lateral wall to peg graft in the frame, be connected with in the backup pad with the reinforcing subassembly of locking between backup pad and the frame. This application has the effect that the condition that the landing appears in earth on the further reduction foundation ditch lateral wall takes place.

Description

Foundation pit supporting device and foundation pit supporting method
Technical Field
The application relates to the field of foundation pit support, in particular to a foundation pit support device and a foundation pit support method.
Background
The row pile support is one of foundation pit support forms which are widely applied in China at present, and has the advantages of high support rigidity, small occupied space, mature construction process and the like.
Chinese patent No. CN112878336B discloses a foundation pit supporting device and a foundation pit supporting method, including supporting piles arranged in series and in an array manner and a reinforcing member arranged between two adjacent supporting piles, where the reinforcing member includes at least one blocking plate, and two ends of the blocking plate are connected with two adjacent supporting piles respectively. After the support piles are arranged, the reinforcing member is arranged between the two adjacent support piles, the foundation pit side wall between the two adjacent support piles is covered by the reinforcing member, and therefore soil on the foundation pit side wall in the region is not prone to sliding down into the foundation pit.
However, the reinforcing member is likely to be far away from the side wall of the foundation pit in the process of installing the two adjacent piles, so that the reinforcing member is unlikely to play a good supporting effect, and the mud on the side wall of the foundation pit is likely to slip off.
Disclosure of Invention
In order to further reduce the condition that the landing appears in the earth on the lateral wall of the foundation pit, the application provides a foundation pit supporting device and a foundation pit supporting method.
In a first aspect, the present application provides a foundation pit supporting device adopts the following technical scheme:
the utility model provides a foundation pit supporting device, includes a plurality of foundation piles of pre-buried in the foundation ditch, all is connected with the reinforcement plate between per two adjacent foundation piles, consolidates the frame that the plate includes to be connected with the foundation pile, and it has the backup pad that is used for to the direction motion that is close to the foundation ditch lateral wall and support tight foundation ditch lateral wall to peg graft in the frame, is connected with the reinforcement subassembly with locking between backup pad and the frame in the backup pad.
Through adopting above-mentioned technical scheme, connect the reinforcement plate between per two adjacent foundation piles, promote every backup pad to the direction that is close to the foundation ditch lateral wall afterwards, until every backup pad all supports the lateral wall of tight foundation ditch. And then, each supporting plate and each frame are locked through the reinforcing component, so that the supporting plates are kept in a state of tightly abutting against the side wall of the foundation pit, and the condition that soil on the side wall of the foundation pit slides down is further reduced.
Preferably, the two inner side walls of the frame are fixedly connected with an installation block, the reinforcing component comprises a reinforcing rod which is hinged to one end, close to the two installation blocks, of each installation block, one end of each reinforcing rod is arranged towards the direction far away from the installation blocks and abuts against one side face, away from the side wall of the foundation pit, of the support plate, the other end of each reinforcing rod is fixedly connected with an elastic limiting rod, one side face, away from the side wall of the foundation pit, of each installation block starts to be provided with a limiting groove, the limiting rods gradually incline towards the direction close to the hinged positions of the reinforcing rods along the direction close to the side wall of the foundation pit, and the inclination direction of the limiting grooves is consistent with the inclination direction of the limiting rods; after the pulling gag lever post breaks away from the spacing groove, elastic gag lever post is contradicted the installation piece and is deviated from a side of foundation ditch lateral wall, and the one end that the gag lever post was kept away from to the anchor strut supports a side that the tight backup pad deviates from the foundation ditch lateral wall.
Through adopting above-mentioned technical scheme, promote the backup pad and support the lateral wall of tight foundation ditch to rotate the anchor strut, make the gag lever post extrusion deformation and break away from the spacing groove gradually, the gag lever post conflict installation piece that breaks away from the spacing groove deviates from a side of foundation ditch lateral wall, the one end that the gag lever post was kept away from to the anchor strut this moment supports a side that tight backup pad deviates from the foundation ditch lateral wall, makes the better state that keeps conflicting foundation ditch lateral wall of bracing piece board. The reinforced assembly is simple in structure, simple and convenient to operate and capable of saving resources.
Preferably, every two are adjacent the side that foundation pile is close to each other has all seted up the mounting groove, and the vertical foundation pile that link up of mounting groove, each end of frame all peg graft with a corresponding mounting groove, are connected with the locking Assembly with locking between frame and the foundation pile on the frame.
Through adopting above-mentioned technical scheme, put into between two foundation piles with every reinforcement plate from top to bottom to peg graft each end of frame with a corresponding mounting groove respectively, lock between frame and the foundation pile through locking Assembly afterwards, consolidate being connected between frame and the foundation pile.
Preferably, the spread groove has all been seted up to two inside walls of frame, the connecting hole has all been seted up to two lateral walls of every spread groove, locking Assembly includes the connecting rod of pegging graft in every connecting hole, the tight piece of supporting of the equal fixedly connected with contact mounting groove lateral wall of one end of spread groove is kept away from to every connecting rod, the spread groove internal rotation is connected with the transition pole, the junction of transition pole and spread groove is located between two installation poles, and two installation poles all contact the transition pole, the equal fixedly connected with connecting rod of two lateral walls of backup pad, every connecting rod all pegs graft with corresponding spread groove, and connecting rod contact transition pole deviates from a side of foundation ditch lateral wall.
Through adopting above-mentioned technical scheme, promote the backup pad to the direction that is close to the foundation ditch lateral wall, the backup pad motion drives the connecting rod motion, and the connecting rod motion then promotes the transition pole and rotates. The transition pole rotates then and promotes two installation poles to the direction motion of keeping away from each other, and every installation pole motion then drives every and supports the piece and to the direction motion of being close to the mounting groove lateral wall, supports the lateral wall that the piece can support tight mounting groove from this for accomplish the fastening connection between frame and the foundation pile.
Preferably, the one end that the gag lever post was kept away from to the anchor strut is connected with the extensible member, and the extensible member is contradicted the backup pad and is deviated from a side of foundation ditch lateral wall.
Through adopting above-mentioned technical scheme, adjust the length of extensible member for the backup pad is different to the distance that the direction that is close to the foundation ditch lateral wall removed, and the extensible member homoenergetic can conflict the backup pad, makes the better lateral wall that supports the tight foundation ditch of backup pad.
Preferably, a guide groove is formed in one end face, far away from the limiting rod, of the reinforcing rod, the telescopic piece comprises a telescopic rod connected with the guide groove in an inserting mode, a locking rod is connected to one side wall of the reinforcing rod in a threaded mode, and one section of the locking rod penetrates into the guide groove and abuts against the side wall of the telescopic rod tightly.
Through adopting above-mentioned technical scheme, rotate the locking lever, break away from the contact telescopic link until the locking lever, remove the telescopic link to the direction of being close to or keeping away from the anchor strut afterwards, so can adjust the length of extensible member, the better conflict backup pad of extensible member of being convenient for.
In a second aspect, the foundation pit supporting method provided by the application adopts the following technical scheme:
a foundation pit supporting method comprises the following steps:
s1, excavating a plurality of pile holes in a construction site;
s2, placing a steel reinforcement cage in each pile hole, pouring concrete, and forming a foundation pile after the concrete is solidified;
s3, excavating a foundation pit at a construction site;
s4, installing a plurality of reinforcing plates between every two adjacent foundation piles, wherein the plurality of reinforcing plates are vertically arranged;
s5, pushing each supporting plate to the direction close to the side wall of the foundation pit, enabling each supporting plate to abut against the side wall of the foundation pit, and locking the reinforcing plate and the foundation pile by the locking assembly;
and S6, locking the position of the support plate and the frame through a reinforcing component.
Through adopting above-mentioned technical scheme, the foundation pile is comparatively firm to strutting of foundation ditch, and the condition that the landing appears in earth that reduces on the lateral wall of foundation ditch takes place, and overall construction structure is comparatively simple, and easy operation is convenient, does benefit to the staff operation.
Preferably, after step S5, there is added: the backup pad motion drives the transition pole through the connecting rod and rotates, and the transition pole rotates and promotes two installation poles to the direction motion of keeping away from each other, and two installation pole motions then drive two and support the direction motion of tight piece to keeping away from each other, so every supports the corresponding lateral wall of tight mounting groove all.
Through adopting above-mentioned technical scheme, contradict the in-process of foundation ditch lateral wall at the backup pad, consolidated being connected between reinforcement plate and the foundation pile, need not to add other power supplies. And in the process of locking the supporting plate and the frame through the reinforcing component, the locking of the position of the abutting block is completed at the same time.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the condition that the soil on the side wall of the foundation pit slides off is further reduced;
2. the reinforcing component is simple in structure, simple and convenient to operate and capable of saving resources;
3. the foundation pile is relatively stable in supporting the foundation pit, and the whole construction structure is relatively simple.
Drawings
Fig. 1 is a schematic view of the overall structure of a foundation pit supporting device according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a reinforced plate according to an embodiment of the present application.
FIG. 3 is a schematic structural diagram of a locking assembly and a reinforcement assembly embodied in an embodiment of the present application.
Description of reference numerals: 1. a foundation pit; 2. foundation piles; 21. mounting grooves; 3. reinforcing the plate; 31. a frame; 311. mounting blocks; 3111. a limiting groove; 312. connecting grooves; 313. connecting holes; 314. a groove; 32. a support plate; 321. a connecting rod; 4. a locking assembly; 41. mounting a rod; 42. a propping block; 43. a transition rod; 5. a reinforcement assembly; 51. a reinforcing rod; 511. a guide hole; 52. a limiting rod; 53. a telescopic rod; 54. a locking lever; 6. an elastic layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a foundation pit supporting device. Referring to fig. 1, the supporting device of the foundation pit 1 includes a plurality of foundation piles 2 embedded inside the foundation pit 1, the plurality of foundation piles 2 are vertically arranged upward, and a part of each foundation pile 2 is embedded inside a side wall of the foundation pit 1. Be connected with a plurality of reinforcement plates 3 that are used for hugging closely 1 lateral wall of foundation ditch between the adjacent foundation pile 2, a plurality of 3 vertical arrangements of reinforcement plate between two foundation piles 2, splice each other between the adjacent reinforcement plate 3, support the inner wall of foundation ditch 1 jointly.
Referring to fig. 1 and 2, each two foundation piles 2 adjacent to each other have a mounting groove 21 formed on a side surface adjacent to each other, and the mounting grooves 21 are vertically arranged and vertically penetrate through the foundation piles 2. Each end of the reinforcing plate 3 is inserted into a corresponding one of the mounting grooves 21, and the reinforcing plate 3 is connected with a locking assembly 4 for locking the reinforcing plate 3 with the foundation pile 2.
The reinforcement plate 3 includes a square frame 31, and further includes a support plate 32 provided in the frame 31. The shape and size of support plate 32 are the same as those of the inner ring of frame 31, support plate 32 can move towards the side wall of foundation pit 1 relative to frame 31, and reinforcing component 5 for locking between frame 31 and support plate 32 is connected to support plate 32.
The reinforcing plate 3 is inserted into the corresponding mounting grooves 21 from the upper ends of the two foundation piles 2 such that each end of the reinforcing plate 3 is inserted into the corresponding mounting groove 21, and then the reinforcing plate 3 is locked with the foundation pile 2 by the locking assembly 4. At the same time, the support plate 32 is pushed in the direction close to the side wall of the foundation pit 1, so that the support plate 32 abuts against the side wall of the foundation pit 1, and the support plate 32 is locked with the frame 31 by the reinforcing member 5.
Referring to fig. 1 and 3, two opposite inner side walls of the frame 31 are fixedly connected with a mounting block 311, and the mounting block 311 is located on one side of the support plate 32 far away from the side wall of the foundation pit 1. The reinforcing component 5 comprises a reinforcing rod 51 hinged with one end of each mounting block 311 far away from the frame 31, one end of the reinforcing rod 51 close to the mounting block 311 is provided with an elastic limiting rod 52, and the limiting rod 52 gradually inclines towards the direction close to the hinged part of the reinforcing rod 51 along the direction close to the side wall of the foundation pit 1.
A limiting groove 3111 is formed in a side wall of the mounting block 311 away from the side wall of the foundation pit 1, the shape and size of the limiting groove 3111 are the same as those of the limiting rod 52, and the inclination direction of the limiting groove 3111 is the same as that of the limiting rod 52. Each limiting rod 52 is inserted into the corresponding limiting groove 3111, and one end of the reinforcing rod 51 far from the limiting rod 52 abuts against one side wall of the supporting plate 32 far away from the side wall of the foundation pit 1.
The limiting rod 52 is rotated towards the direction away from the limiting groove 3111 until the limiting rod 52 deforms and breaks away from the limiting groove 3111, at this time, the limiting rod 52 abuts against one side face of the mounting block 311 away from the side wall of the foundation pit 1, and the other end of the reinforcing rod 51 abuts against the supporting plate 32, so that the supporting plate 32 abuts against the side wall of the foundation pit 1.
A side of the supporting plate 32 facing away from the side wall of the foundation pit 1 is fixedly connected with an elastic layer 6, and the reinforcing rod 51 abuts against the elastic layer 6. Rotate anchor strut 51 and make gag lever post 52 break away from spacing groove 3111's in-process, thereby anchor strut 51 contradicts elastic layer 6 and makes elastic layer 6 take place deformation, is convenient for increase anchor strut 51's rotation range.
In order to facilitate the reinforcing rod 51 to control the side wall of the foundation pit 1, against which the supporting plate 32 is better, one end of the reinforcing rod 51, which is far away from the limiting rod 52, is connected with an expansion piece, a guide hole 511 is formed in one end face of the reinforcing rod 51, which is far away from the limiting rod 52, the expansion piece comprises an expansion rod 53 inserted into the guide hole 511, a locking rod 54 is in threaded connection with the side wall of the reinforcing rod 51, and one end of the locking rod 54 penetrates through the side wall of the reinforcing rod 51 and goes deep into the guide hole 511 to abut against the side wall of the expansion rod 53.
The locking rod 54 is rotated so that the locking rod 54 is gradually moved away from the telescopic bar 53 and is separated from the telescopic bar 53, and at this time, the locking rod 54 can be moved in a direction to approach or move away from the reinforcing bar 51 along the guide hole 511. When supporting plate 32 moves towards the direction close to the side wall of foundation pit 1 and clings to the side wall of foundation pit 1, the telescopic parts are adjusted, so that reinforcing rods 51 and locking rods 54 can better support supporting plate 32.
The two inner side walls of the frame 31 are respectively provided with a connecting groove 312, the two side walls of the supporting plate 32 are respectively fixedly connected with a connecting rod 321, one connecting rod 321 corresponds to one connecting groove 312, and the connecting rod 321 is inserted into the connecting groove 312. When the support plate 32 moves in a direction close to the side wall of the foundation pit 1, each connecting rod 321 moves in the corresponding connecting groove 312, the connecting grooves 312 provide a guiding function for the movement of the connecting rods 321 and the support plate 32, and the occurrence of the situation that the support plate 32 is separated from the frame 31 is reduced.
The two side walls of each connecting groove 312 are respectively provided with a connecting hole 313, and each connecting hole 313 extends towards the direction close to the side wall of the mounting groove 21. The locking assembly 4 includes a mounting rod 41 inserted into each of the connection holes 313, and an elastic abutting block 42 is fixedly connected to an end of each of the mounting rods 41 away from the connection groove 312. Two side surfaces of the frame 31 are respectively provided with a group of grooves 314, and the number of the group of grooves 314 is two. One of the abutting blocks 42 corresponds to one of the grooves 314, and the abutting blocks 42 are inserted into the corresponding grooves 314.
The locking assembly 4 further comprises a transition bar 43 rotatably coupled within each coupling slot 312, the junction of the transition bar 43 and the coupling slot 312 being located between the two mounting bars 41. When the transition rod 43 is not subjected to external force, the transition rod 43 is parallel to the connecting rod 321, one end of one transition rod 43 corresponds to one connecting rod 321, and the connecting rod 321 is tightly attached to one side surface of the transition rod 43, which deviates from the side wall of the foundation pit 1.
When the supporting plate 32 is pushed to the direction close to the sidewall of the foundation pit 1, the supporting plate 32 moves to drive the connecting rod 321 to move, and the connecting rod 321 moves to push the transition rod 43 to rotate. Transition rod 43 promotes two installation poles 41 and moves to the direction of keeping away from each other when rotating, and two installation pole 41 movements then drive two and support tight board and move to the direction of keeping away from each other, so two support tight board by the lateral wall extrusion deformation of mounting groove 21, and every supports tight board and all supports the corresponding lateral wall of tight mounting groove 21, are convenient for accomplish the fastening connection who consolidates plate 3 and foundation pile 2.
The embodiment of the application also discloses a foundation pit supporting method, which comprises the following steps:
and S1, excavating a plurality of pile holes at the construction site.
And S2, placing a steel reinforcement cage in each pile hole, pouring concrete, and forming the foundation pile 2 after the concrete is solidified.
S3, excavating the foundation pit 1 at the construction site, exposing the part of each foundation pile 2 close to the foundation pit 1, and burying the rest part of each foundation pile 2 in the side wall of the foundation pit 1.
S4, installing a plurality of reinforcing plates 3 between every two adjacent foundation piles 2, the plurality of reinforcing plates 3 being vertically arranged. Namely, each reinforcing plate 3 is inserted between two foundation piles 2 from top to bottom in sequence, and each section of the reinforcing plate 3 is controlled to be correspondingly inserted into the installation groove 21.
S5, each support plate 32 is pushed in a direction to approach the sidewall of the foundation pit 1 so that each support plate 32 abuts against the sidewall of the foundation pit 1. In the process, the support plate 32 moves to drive the transition rod 43 to rotate through the connecting rod 321, the transition rod 43 rotates to push the two mounting rods 41 to move in the direction away from each other, and the two mounting rods 41 move to drive the two abutting blocks 42 to move in the direction away from each other. Each abutment block 42 thus abuts against a corresponding side wall of the installation groove 21, reinforcing the connection between the reinforcing plate 3 and the foundation pile 2.
S6, locking the position of the support plate 32 and the frame 31 at this time by the reinforcement member 5. Poking the gag lever post 52 hard to the direction of keeping away from spacing groove 3111, gag lever post 52 drives anchor strut 51 and rotates, breaks away from spacing groove 3111 until gag lever post 52, and anchor strut 51 is connected with one section of extensible member and supports a side that tight backup pad 32 deviates from foundation ditch 1 lateral wall this moment. Because the limiting rod 52 is in an inclined state, the limiting rod 52 separated from the limiting groove 3111 abuts against the mounting block 311, so that the telescopic member keeps a state of abutting against the support plate 32, and the position of the support plate 32 is locked at the moment.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a foundation pit supporting device, a serial communication port, including pre-buried a plurality of foundation piles (2) in foundation ditch (1), all be connected with between per two adjacent foundation piles (2) and consolidate plate (3), it includes frame (31) of being connected with foundation pile (2) to consolidate plate (3), it has backup pad (32) that are used for moving and support tight foundation ditch (1) lateral wall to the direction that is close to foundation ditch (1) lateral wall to peg graft in frame (31), be connected with on backup pad (32) with reinforcing subassembly (5) of locking between backup pad (32) and frame (31).
2. A foundation pit supporting device according to claim 1, wherein two inner side walls of the frame (31) are fixedly connected with a mounting block (311), the reinforcing component (5) comprises a reinforcing rod (51) hinged with one end of the two mounting blocks (311) close to each other, one end of the reinforcing rod (51) is arranged in a direction away from the mounting block (311) and abuts against one side surface of the supporting plate (32) away from the side wall of the foundation pit (1), the other end of the reinforcing rod (51) is fixedly connected with an elastic limiting rod (52), one side surface of the mounting block (311) away from the side wall of the foundation pit (1) starts to be provided with a limiting groove (3111), the limiting rod (52) gradually inclines towards a direction close to the hinged part of the reinforcing rod (51) in a direction close to the side wall of the foundation pit (1), and the inclination direction of the limiting groove (3111) is consistent with the inclination direction of the limiting rod (52); after the limiting rod (52) is pulled to be separated from the limiting groove (3111), the elastic limiting rod (52) abuts against one side face, deviating from the side wall of the foundation pit (1), of the mounting block (311), and one end, far away from the limiting rod (52), of the reinforcing rod (51) abuts against one side face, deviating from the side wall of the foundation pit (1), of the supporting plate (32).
3. The foundation pit supporting device according to claim 2, wherein each two adjacent foundation piles (2) are provided with a mounting groove (21) on one side surface close to each other, the mounting grooves (21) vertically penetrate through the foundation piles (2), each end of the frame (31) is inserted into a corresponding mounting groove (21), and the frame (31) is connected with a locking assembly (4) for locking the frame (31) and the foundation piles (2).
4. The foundation pit supporting device according to claim 3, wherein two inner side walls of the frame (31) are respectively provided with a connecting groove (312), two side walls of each connecting groove (312) are respectively provided with a connecting hole (313), the locking component (4) comprises a connecting rod (321) inserted in each connecting hole (313), one end of each connecting rod (321) far away from the connecting groove (312) is respectively and fixedly connected with a resisting block (42) of the side wall of the contact mounting groove (21), a transition rod (43) is rotatably connected in the connecting groove (312), the joint of the transition rod (43) and the connecting groove (312) is positioned between the two mounting rods (41), the two mounting rods (41) are respectively contacted with the transition rod (43), the two side walls of the supporting plate (32) are respectively and fixedly connected with the connecting rods (321), and each connecting rod (321) is inserted in the corresponding connecting groove (312), and the connecting rod (321) contacts one side surface of the transition rod (43) deviating from the side wall of the foundation pit (1).
5. A foundation pit supporting device according to any one of claims 2-4, characterized in that the end of the reinforcing rod (51) remote from the stop rod (52) is connected with an expansion piece which abuts against a side of the supporting plate (32) remote from the side wall of the foundation pit (1).
6. The foundation pit supporting device according to claim 5, wherein a guide groove is formed in one end face, away from the limiting rod (52), of the reinforcing rod (51), the telescopic piece comprises a telescopic rod (53) inserted into the guide groove, a locking rod (54) is in threaded connection with one side wall of the reinforcing rod (51), and one section of the locking rod (54) penetrates into the guide groove and abuts against the side wall of the telescopic rod (53).
7. A method as claimed in any one of claims 4 to 6, including the steps of:
s1, excavating a plurality of pile holes in a construction site;
s2, placing a steel reinforcement cage in each pile hole, pouring concrete, and forming a foundation pile (2) after the concrete is solidified;
s3, excavating a foundation pit (1) at a construction site;
s4, installing a plurality of reinforcing plate pieces (3) between every two adjacent foundation piles (2), wherein the plurality of reinforcing plate pieces (3) are vertically arranged;
s5, pushing each supporting plate (32) towards the direction close to the side wall of the foundation pit (1) to enable each supporting plate (32) to abut against the side wall of the foundation pit (1), and locking the reinforcing plate (3) and the foundation pile (2) by the locking assembly (4);
and S6, locking the position of the support plate (32) and the frame (31) through the reinforcing component (5).
8. A method of retaining and protecting a foundation pit according to claim 7, wherein after step S5: the supporting plate (32) moves to drive the transition rod (43) to rotate through the connecting rod (321), the transition rod (43) rotates to push the two mounting rods (41) to move towards the direction away from each other, the two mounting rods (41) move to drive the two abutting blocks (42) to move towards the direction away from each other, and each abutting block (42) abuts against one corresponding side wall of the mounting groove (21).
CN202210835045.5A 2022-07-16 2022-07-16 Foundation pit supporting device and foundation pit supporting method Active CN114960686B (en)

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CN211312538U (en) * 2019-11-28 2020-08-21 四川鸥鹏建筑工程公司 Novel deep foundation pit supporting structure
CN212427124U (en) * 2020-04-26 2021-01-29 青岛金沙滩建设集团有限公司 Municipal pipeline foundation pit protective structure
CN215482987U (en) * 2021-06-11 2022-01-11 福建省透堡建筑工程有限公司 Foundation pit supporting structure
CN215801662U (en) * 2021-07-23 2022-02-11 张兵 Novel foundation ditch safety protection based on town road engineering device

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CN211312538U (en) * 2019-11-28 2020-08-21 四川鸥鹏建筑工程公司 Novel deep foundation pit supporting structure
CN212427124U (en) * 2020-04-26 2021-01-29 青岛金沙滩建设集团有限公司 Municipal pipeline foundation pit protective structure
CN215482987U (en) * 2021-06-11 2022-01-11 福建省透堡建筑工程有限公司 Foundation pit supporting structure
CN215801662U (en) * 2021-07-23 2022-02-11 张兵 Novel foundation ditch safety protection based on town road engineering device

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