CN212983877U

CN212983877U - Ultra-deep foundation pit supporting structure

Info

Publication number: CN212983877U
Application number: CN202021577464.6U
Authority: CN
Inventors: 李英杰; 张鸣卉; 孔晓芳; 张广东
Original assignee: Jiangsu Guangchuan Construction Co ltd
Current assignee: Jiangsu Guangchuan Construction Co ltd
Priority date: 2020-08-01
Filing date: 2020-08-01
Publication date: 2021-04-16
Anticipated expiration: 2030-08-01

Abstract

The utility model relates to an ultra-deep foundation pit supporting structure, it is including propping up backplate and stock, still including setting up the anchor that adds in foundation ditch top and bottom, the anchor hole has been seted up on the face of propping up the backplate, the stock passes the anchor hole and inserts in the soil layer of foundation ditch lateral wall, it sets up to consolidate the anchor perpendicular to foundation ditch lateral wall respectively, and the two liang of relative settings of the reinforcement anchor that are located foundation ditch top and foundation ditch bottom, two relative settings add to consolidate and be connected with the anchor strut between the anchor jointly, the anchor strut compresses tightly the supporting plate with the column respectively on the foundation ditch lateral wall. This application has through setting up at foundation ditch top and bottom and consolidate the anchor to set up the anchor strut between consolidating the anchor, support tight each backplate through consolidating anchor and anchor strut, reduced because foundation ditch lateral wall soil property is not hard up and cause the stock weak to the fixed ability of a backplate, the effect of the possibility of stability is strutted in the influence.

Description

Ultra-deep foundation pit supporting structure

Technical Field

The application relates to the field of earthwork construction, in particular to an ultra-deep foundation pit supporting structure.

Background

The deep foundation pit refers to an engineering with excavation depth of more than 5 meters (including 5 meters) or more than three layers (including three layers) of a basement, or a construction with excavation depth of less than 5 meters, but particularly complex geological conditions, surrounding environment and underground pipelines. At present, when foundation pit construction is carried out, the construction depth of the foundation pit of a part of buildings can reach more than ten meters, and the foundation pit is called as an ultra-deep foundation pit.

Chinese patent publication No. CN206986900U discloses a foundation pit support with a drainage structure. The foundation pit supporting and protecting plate is characterized by comprising a foundation pit supporting and protecting plate, wherein an anchor rod is arranged inside the foundation pit supporting and protecting plate, the anchor rod is inserted into the slope wall, the foundation pit supporting and protecting plate is fixedly connected with the slope wall through the anchor rod, and one side of the foundation pit supporting and protecting plate is tightly attached to the slope wall.

Aiming at the related technologies, the inventor thinks that the defects exist that when the soil structure of the side wall of the foundation pit is loose, the fixing capacity of the anchor rod to the supporting and protecting plate is weak, and the supporting and protecting stability is influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the defect that the stock is weaker to a backplate fixed ability, this application provides an ultra-deep foundation ditch supporting construction.

The application provides a pair of ultra-deep foundation pit supporting construction adopts following technical scheme:

the utility model provides an ultra-deep foundation pit supporting structure, includes, props up backplate and stock, still including setting up the anchor that adds in foundation ditch top and bottom, has seted up the anchor hole on the face of propping up the backplate, the stock passes in the anchor hole and inserts the soil layer of foundation ditch lateral wall, it sets up perpendicular to foundation ditch lateral wall respectively to consolidate the anchor, and is located foundation ditch top and foundation ditch bottom it sets up two liang of relative to consolidate the anchor, two that set up relatively it is connected with the anchor strut jointly to consolidate between the anchor, the anchor strut compresses tightly the supporting plate in the same line on the foundation ditch lateral wall respectively.

Through adopting above-mentioned technical scheme, because when setting up the stock and fixing a backplate, set up the reinforcement anchor respectively and add the anchor strut in the top and the bottom of foundation ditch, the anchor strut is fixed through the soil layer of reinforcement anchor directness and foundation ditch top and bottom, and the anchor strut supports each backplate tightly to reduce the possibility that the retaining panel is not hard up, drops and lead to supporting structure insecure, promoted foundation ditch support's stability.

Preferably, be equipped with the solid fixed ring of a plurality of on the supporting plate, gu fixed ring's axis is on a parallel with the face of supporting plate, the anchor strut passes each solid fixed ring from last to down in proper order.

By adopting the technical scheme, the supporting plates and the reinforcing rods are relatively positioned by arranging the fixing rings, so that the situation that the supporting structure fails due to dislocation of the reinforcing rods and the supporting plates when the soil layer structure around the foundation pit is changed due to external force is reduced.

Preferably, the two ends of the reinforcing rod are respectively and fixedly provided with a connecting ring, the connecting ring at the top end of the reinforcing rod is sleeved on the reinforcing anchor at the top of the foundation pit, the connecting ring at the bottom end of the reinforcing rod is sleeved on the reinforcing anchor at the bottom of the foundation pit, the reinforcing anchor is in threaded connection with a resisting sleeve, and the resisting sleeve compresses the reinforcing rod towards the direction of the supporting plate

Through adopting above-mentioned technical scheme, utilize the go-between to be connected the anchor bar with the reinforcement anchor, when the staff rotates the tight cover of support, support tight cover and rotate and further press the surface of anchor bar to a backplate, the staff of being convenient for adjusts the inclination of anchor bar according to the actual inclination degree of foundation ditch lateral wall, makes the anchor bar adapt to the foundation ditch lateral wall of different angles.

Preferably, the reinforcing rod is formed by splicing a plurality of splicing rods, a connecting groove is formed in one end portion of each splicing rod, a connecting block is fixedly arranged at the other end portion of each splicing rod, the connecting groove is matched with the connecting block, and a positioning bolt is arranged on the connecting block and the groove wall of the connecting groove in a penetrating mode.

By adopting the technical scheme, because the reinforcing rods are formed by the splicing rods, the staff can continuously lengthen the reinforcing rods through the connecting splicing rods along with the excavation work of the foundation pit, and the supporting structure is adjusted in real time according to the progress of the foundation pit construction, so that the supporting structure is matched with the depth of the foundation pit.

Preferably, a plurality of stabilizing holes which are perpendicular to the axis of the reinforcing anchor and penetrate through the reinforcing anchor are formed in the circumferential side wall of the reinforcing anchor, a stabilizing anchor penetrates through each stabilizing hole, and the end part of each stabilizing anchor penetrates into the ground.

Through adopting above-mentioned technical scheme, at the in-process that sets up the reinforcement anchor, the staff at first will reinforce the anchor and go into ground, because need consolidate the anchor and need perpendicular to foundation ditch lateral wall setting, when the inclination between foundation ditch lateral wall and the ground is too big, it can be very little to consolidate the inclination between anchor and the ground, it can diminish to consolidate the anchor and insert the degree of depth of establishing in soil, consequently, the stability of reinforcement anchor weakens, this moment through wear to establish the stable anchor in stabilizing the accuse, a plurality of stable anchors fix a position the reinforcement anchor, the stability of reinforcement anchor has been promoted.

Preferably, the surface of the supporting plate is provided with a pouring groove.

Through adopting above-mentioned technical scheme, through setting up the groove of pouring, after the supporting board sets up the completion, the staff can be to pouring concrete in the groove of pouring, and the time concrete forms the cement slab on the supporting board, promotes the intensity of supporting board, has reduced the extrusion lower supporting board in the soil layer and has taken place to warp the possibility that influences supporting structure stability.

Preferably, a prying groove is formed in the side wall of the pouring groove and extends to the surface of the supporting plate.

Through adopting above-mentioned technical scheme, through setting up the sled groove, when needs are disassembled and are retrieved supporting construction, instrument such as staff's accessible crowbar to the cell wall of sled groove prizes out cement board from pouring the inslot as the fulcrum, thereby has alleviateed the holistic weight of supporting construction, and with concrete structure and supporting board recycle respectively, smashes after the concrete structure retrieves and recycles, has practiced thrift the cost.

Preferably, a filling block slides in the prying groove along the groove depth direction, and a pulling end is arranged on the filling block.

Through adopting above-mentioned technical scheme, when concreting, fill into the sled groove through the filling block, reduce the concrete and get into and cause the possibility of sled groove shutoff in the sled groove, pour the back, after the concrete initial set, propose the filling block through pulling the end, reduced the filling block and the concrete adhesion condition of forming an organic whole.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the reinforcing anchors are arranged at the top and the bottom of the foundation pit, the reinforcing rods are arranged between the reinforcing anchors, and the reinforcing anchors and the reinforcing rods are used for tightly supporting each supporting plate, so that the possibility that the supporting stability is influenced due to the weak fixing capacity of the anchor rods on the supporting plates caused by loose soil on the side wall of the foundation pit is reduced;

2. the reinforcing rods are formed by splicing a plurality of splicing rods, so that workers can extend the reinforcing rods according to the progress of earthwork excavation work in the foundation pit, and the supporting structure is matched with the depth of the foundation pit;

3. through setting up and pouring the groove, promoted the structural strength of a backplate, reduced because the extrusion of basic shell lateral wall causes the backplate to warp, supporting structure damages the possibility.

Drawings

Fig. 1 is a schematic view of an embodiment of the present application for showing the overall supporting structure.

Fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a schematic cross-sectional view illustrating a splicing structure of portions of a reinforcing bar according to an embodiment of the present application.

FIG. 4 is a schematic diagram of various structures on a support guard plate according to an embodiment of the present application.

Description of reference numerals: 1. supporting the guard plate; 11. an anchor rod; 12. an anchoring hole; 13. a fixing ring; 14. pouring a groove; 15. prying the groove; 151. filling blocks; 152. lifting the end; 2. reinforcing the anchor; 21. abutting the sleeve; 22. a stabilization well; 221. a stable anchor; 3. a reinforcing rod; 31. a connecting ring; 32. splicing rods; 321. connecting blocks; 322. connecting grooves; 323. and (6) positioning the bolt.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses ultra-deep foundation pit supporting structure. Referring to fig. 1, the ultra-deep foundation pit supporting structure comprises supporting plates 1, anchor rods 11 and a plurality of reinforcing anchors 2 arranged at the top and the bottom of a foundation pit, wherein a plurality of anchoring holes 12 are formed in the surface of each supporting plate 1, the number of the anchoring holes 12 is not less than two, the number of the anchoring holes 12 can be two, and the anchor rods 11 respectively penetrate through the anchoring holes 12 and are inserted into the side wall of the foundation pit, so that the supporting plates 1 are fixed on the side wall of the foundation pit. The plate surface of the supporting plate 1 is provided with a plurality of fixing rings 13, the number of the fixing rings 13 can be four, and the fixing rings are distributed at the top end and the bottom end of the supporting plate 1 in a pairwise opposite mode.

Referring to fig. 1, consolidate the lateral wall of anchor 2 perpendicular to foundation ditch, and the two liang of relative settings of the reinforcement anchor 2 at foundation ditch bottom and top, and set up the stabilizer hole 22 of a plurality of central lines perpendicular to reinforcement anchor 2 axis on the circumference lateral wall of reinforcement anchor 2, wear to be equipped with in the stabilizer hole 22 of foundation ditch top reinforcement anchor 2 and stabilize anchor 221, stabilize anchor 221 inserts in the ground on foundation ditch top, thereby when the contained angle between foundation ditch lateral wall and the ground is too big, fix a position with the reinforcement anchor 2 of ground contained angle undersize through stabilizing anchor 221.

Referring to fig. 2 and 3, a reinforcing rod 3 is connected between the reinforcing anchor 2 between the top and the bottom of the foundation pit, the reinforcing rod 3 is formed by sequentially splicing a plurality of splicing rods 32 end to end, a connecting groove 322 is formed in one end of each splicing rod 32, a connecting block 321 is fixedly arranged at the other end of each splicing rod, the connecting block 321 is matched with the connecting groove 322, the adjacent splicing rods 32 are mutually spliced through the connecting grooves 322 and the connecting blocks 321, positioning bolts 323 are arranged on the side walls of the connecting grooves 322 and the connecting blocks 321 in a penetrating mode, and therefore the adjacent splicing rods 32 are fixed. One end of each of two splicing rods 32 at two ends of the reinforcing rod 3, which are far away from each other, is fixedly provided with a fixing ring 13, the fixing ring 13 is sleeved on the reinforcing rod 3, one end of the reinforcing rod 3, which is far away from the ground, is connected with a tightening sleeve 21 through threads, and the tightening sleeve 21 compresses the fixing ring 13, so that the reinforcing rod 3 is tightened against the support plate 1. Support tight backplate 1 through anchor strut 3, reduced the loose soil property of foundation ditch lateral wall and lead to stock 11 to the supporting plate 1 location insecure, the not hard up possibility of supporting construction.

Referring to fig. 4, a pouring groove 14 is formed in the plate surface of the supporting plate 1, a prying groove 15 is formed in the side wall of one side of the pouring groove 14, and the prying groove 15 is communicated with the pouring groove 14 and extends to the plate surface of the supporting plate 1. The packing block 151 slides in the prying groove 15 along the thickness direction of the pouring groove 14, a pulling end is fixedly arranged on the packing block 151, the pulling end can be a handle or a pull ring, and the pull ring is adopted in the embodiment. In the actual use process, after the supporting and protecting plate 1 is arranged, a worker pours or paints concrete on the surface of the supporting and protecting plate 1, and a cement plate formed after the concrete is solidified is attached to the surface of the supporting and protecting plate 1, so that the structural strength of the supporting and protecting plate 1 is enhanced, and the possibility that the supporting and protecting structure fails due to deformation of the supporting and protecting plate 1 caused by pressure bearing when the side wall of the foundation shell generates a deformation trend is reduced. When pouring, the filling blocks 151 prevent concrete from overflowing into the prying grooves 15, and after the concrete is initially set and formed, workers pull out the filling blocks 151 through the pulling ends, so that the possibility that the filling blocks 151 are bonded by the concrete is reduced.

Referring to fig. 1, when the construction of the foundation pit is finished, in the process of recovering the supporting device, a worker firstly detaches and recovers the reinforcing anchor 2 and sequentially recovers each splicing rod 32, finally extracts the anchor rod 11 from the side wall of the foundation pit and takes down the supporting plate 1, and extends into the prying groove 15 through a crowbar after taking down the supporting plate 1, so that a cement plate is taken out of the pouring groove 14, the concrete is structurally separated from the supporting plate 1, and the supporting plate 1 is recovered. The cement board can be used as the aggregate of the next concrete slurry after being crushed, so that the materials are saved, and the cost is reduced.

The implementation principle of the ultra-deep foundation pit supporting structure in the embodiment of the application is as follows: support backplate 1 through reinforcing anchor 2 and the anchor strut 3 on the reinforcing anchor 2 and tightly support on the foundation ditch lateral wall, the staff makes the supporting system match with the foundation ditch lateral wall of different angles through rotating the angle of supporting cover 21 adjustment anchor strut 3, through installing the holistic length of pole extension anchor strut 3 additional to anchor strut 3, and then has realized the strut to the ultra-deep foundation ditch making the different degree of depth of reinforced structure adaptation.

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

1. The utility model provides an ultra-deep foundation pit supporting construction, includes backplate (1) and stock (11), its characterized in that: the anchor rod reinforcing structure is characterized by further comprising reinforcing anchors (2) arranged at the top and the bottom of the foundation pit, wherein anchoring holes (12) are formed in the surface of the supporting plate (1), the anchor rods (11) penetrate through the anchoring holes (12) and are inserted into a soil layer of the side wall of the foundation pit, the reinforcing anchors (2) are respectively perpendicular to the side wall of the foundation pit and are located at the top and the bottom of the foundation pit, every two reinforcing anchors (2) are oppositely arranged, reinforcing rods (3) are jointly connected between the two reinforcing anchors (2) which are oppositely arranged, and the supporting and protecting plates (1) in the same row are respectively compressed on the side wall of the foundation pit by the reinforcing rods (3).

2. The ultra-deep foundation pit supporting structure of claim 1, wherein: be equipped with a plurality of solid fixed rings (13) on fender (1), the axis of solid fixed ring (13) is on a parallel with the face of fender (1), anchor strut (3) is from last to passing each solid fixed ring (13) down in proper order.

3. The ultra-deep foundation pit supporting structure of claim 2, wherein: the two ends of the reinforcing rod (3) are respectively and fixedly provided with a connecting ring (31), the connecting ring (31) at the top end of the reinforcing rod (3) is sleeved on the reinforcing anchor (2) at the top of the foundation pit, the connecting ring (31) at the bottom end of the reinforcing rod (3) is sleeved on the reinforcing anchor (2) at the bottom of the foundation pit, a tightening sleeve (21) is connected to the reinforcing anchor (2) through threads, and the tightening sleeve (21) compresses the reinforcing rod (3) towards the supporting plate (1).

4. The ultra-deep foundation pit supporting structure of claim 1, wherein: the reinforcing rod (3) is formed by splicing a plurality of splicing rods (32), a connecting groove (322) is formed in one end portion of each splicing rod (32), a connecting block (321) is fixedly arranged at the other end portion of each splicing rod (32), the connecting groove (322) is matched with the connecting block (321), and a positioning bolt (323) is arranged on the groove walls of the connecting block (321) and the connecting groove (322) in a penetrating mode.

5. The ultra-deep foundation pit supporting structure of claim 1, wherein: a plurality of stabilizing holes (22) which are perpendicular to the axis of the reinforcing anchor (2) and penetrate through the reinforcing anchor (2) are formed in the circumferential side wall of the reinforcing anchor (2), stabilizing anchors (221) penetrate through the stabilizing holes (22), and the end portions of the stabilizing anchors (221) penetrate into the ground.

6. The ultra-deep foundation pit supporting structure of claim 1, wherein: the surface of the supporting and protecting plate (1) is provided with a pouring groove (14).

7. The ultra-deep foundation pit supporting structure of claim 6, wherein: a prying groove (15) is formed in the side wall of the pouring groove (14), and the prying groove (15) extends to the surface of the supporting and protecting plate (1).

8. The ultra-deep foundation pit supporting structure of claim 7, wherein: a filling block (151) slides in the prying groove (15) along the groove depth direction, and a pulling end is arranged on the filling block (151).