CN211257012U

CN211257012U - Foundation pit supporting structure

Info

Publication number: CN211257012U
Application number: CN201922190795.8U
Authority: CN
Inventors: 郭典塔; 谢琳; 施军建; 欧阳爽; 王春婷; 韩国壮; 罗国帅; 卢萍; 黄晓煌
Original assignee: Guangdong Huagu Engineering Co ltd
Current assignee: Guangdong Huagu Engineering Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-14
Anticipated expiration: 2029-12-09

Abstract

The utility model relates to a foundation pit supporting structure, a protective plate is provided with a through hole in a through way, and the protective plate is articulated with an anchoring part at the position of the through hole; one side, far away from the side wall of the foundation pit, of the protection plate is connected with a propping block in a sliding mode, the through hole is formed in a sliding path of the propping block, and the anchoring piece is recessed in the side wall of the foundation pit when the propping block is tightly propped against the anchoring piece; one side of the abutting block, which is far away from the anchoring part, is fixedly provided with a supporting rod for supporting between the bottom surface of the foundation pit and the protection plate in an inserting manner. Through the setting, when the lateral wall of adjacent guard plate supports tightly each other, reduce the displacement volume of guard plate, make and keep supporting tightly between the curb plate of adjacent guard plate, reduce because of the circumstances such as the excavation supporting unstability or waterproof performance that the guard plate dislocation leads to descend. Wherein the bracing piece realizes the support to the foundation ditch lateral wall. And the bracing piece carries out the application of force to the piece that supports, can support anchor assembly better, increases the relation of connection between anchor assembly and the foundation ditch lateral wall.

Description

Foundation pit supporting structure

Technical Field

The utility model belongs to the technical field of the technique of excavation supporting and specifically relates to a excavation supporting construction is related to.

Background

The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit.

The existing foundation pit supporting structure comprises a protection plate attached to the side wall of a foundation pit and a support rod used for supporting between the bottom surface of the foundation pit and the protection plate, wherein the protection plate is fixed with a side plate at the contact position of the protection plate and an adjacent protection plate, the side plates of the adjacent protection plates are mutually abutted, and the side plate is supported by a support component on the protection plate to be deformed to be tightly supported by the adjacent side plates, so that the waterproof effect of the contact position of the adjacent protection plates is realized.

This excavation supporting construction problem exists because the curb plate that props makes adjacent guard plate take place the displacement easily because lack the fixed relation between guard plate and the foundation ditch lateral wall when the tight subassembly that supports of one of them guard plate of drive props the curb plate, makes and arranges irregularly between the guard plate, makes the clearance grow between the adjacent guard plate, influences water-proof effects, consequently has the improvement space.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a supporting construction of foundation ditch has the good advantage of impervious water nature.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a foundation pit supporting structure comprises a plurality of protection plates attached to the side wall of a foundation pit, wherein side plates are fixed on two sides of each protection plate, the joints of the side plates and the protection plates have certain toughness, the plane where the side plates are located is perpendicular to the plane where the protection plates are located, a plurality of groups of tensioning assemblies used for applying pressure to the side plates to enable the side plates to be tightly abutted against the side plates on the adjacent protection plates are arranged between the two side plates, the protection plates are provided with through holes in a penetrating mode, and the protection plates are hinged with anchoring parts at the through holes; the side, far away from the side wall of the foundation pit, of the protection plate is connected with a propping block in a sliding mode, the through hole is formed in a sliding path of the propping block, and the anchoring piece is recessed in the side wall of the foundation pit when the propping block is tightly propped against the anchoring piece; one side of the abutting block, which is far away from the anchoring part, is fixedly provided with a supporting rod for supporting between the bottom surface of the foundation pit and the protection plate in an inserting manner.

Through the setting, guard plate and the laminating of foundation ditch lateral wall support the foundation ditch lateral wall, and the mutual butt of curb plate that adjacent guard plate is close to each other to exert outside guard plate outside pressure of keeping away from through tensioning assembly to the curb plate, thereby make the curb plate support tightly adjacent curb plate, carry out waterproofly to the clearance between the adjacent guard plate. Wherein the through-hole has been link up in the guard plate middle part, be provided with in the through-hole with guard plate articulated anchor assembly to one side sliding connection of foundation ditch lateral wall supports the piece, extrudees anchor assembly through supporting the piece to the anchor assembly, and anchor assembly caves in the foundation ditch lateral wall when making to support tight piece and anchor assembly, thereby has increased the connectivity between guard plate and the foundation ditch lateral wall, has increased the frictional force that the guard plate resisted the horizontal migration. Thereby when the lateral wall of adjacent guard plate supports each other tightly, reduce the displacement volume of guard plate, make and keep supporting tightly between the curb plate of adjacent guard plate, reduce because of the circumstances such as the unstable or waterproof performance of excavation supporting that the guard plate dislocation leads to descends. Wherein the piece that supports keeps away from one side grafting of anchor assembly is fixed with the bracing piece, the bracing piece other end and foundation ditch bottom surface butt to support the guard plate through the bracing piece, realize the support to the foundation ditch lateral wall. And the bracing piece carries out the application of force to the piece that supports, can support anchor assembly better, increases the relation of connection between anchor assembly and the foundation ditch lateral wall.

The utility model discloses further set up, set up extending structure on the bracing piece.

Through the setting, set up telescopic machanism on the bracing piece to be convenient for with the bracing piece with support tight piece grafting after supporting tight piece and removing to target in place, then adjust telescopic machanism with the bracing piece extend to with foundation ditch bottom surface butt, realize the support to the guard plate, and play the effect of convenient operation.

The utility model discloses further set up, the side that the foundation ditch lateral wall was kept away from to the guard plate is fixed with the slide rail of vertical setting, the tight piece that supports is in slide in the slide rail, the through-hole sets up the lower extreme of slide rail, the slide rail bottom mounting have with support the limiting plate of tight piece butt.

Through the arrangement, the abutting block slides up and down in the slide rail, and the through hole is formed in the lower end of the slide rail, so that the abutting block is abutted to the anchoring piece in the downward sliding process, the anchoring piece is stressed to rotate and be wedged into the side wall of the foundation pit, the connection relation between the protection plate and the side wall of the foundation pit is improved, and the displacement is reduced. The limiting plate that the slide rail bottom mounting has and supports tight piece butt, and the restriction supports tight piece and slide rail separation, supports tight piece when supporting tight piece and limiting plate butt and keeps compressing tightly anchoring part, also is convenient for the bracing piece with support tight piece and be connected and transmit the holding power of bracing piece.

The utility model discloses further set up, anchor assembly with the pin joint axis level of guard plate sets up, anchor assembly is whole circular-arcly, anchor assembly is close to one side of supporting tight piece be provided with support the butt face of tight piece contact, the butt face with the through-hole shape cooperation, anchor assembly keeps away from one side of supporting tight piece is provided with sharp end, works as support tight piece and promote anchor assembly's butt face shutoff during the through-hole, sharp end caves in the foundation ditch lateral wall.

Through the setting, the pin joint axis level of anchor assembly and guard plate sets up and with the plane coplane in guard plate place, and sets up that the anchor assembly is whole to be circular-arc, makes anchor assembly receive pressure to the foundation ditch lateral wall direction and rotates. Wherein one side that anchor assembly is close to the piece of supporting is provided with through-hole shape complex butt face, and one side protrusion that anchor assembly kept away from the butt face is fixed with sharp end, and the butt face is favorable to carrying out waterproof shutoff with the through-hole behind sharp end cave in the foundation ditch lateral wall, can cooperate waterproof coating etc. to carry out waterproof shutoff with the through-hole, improves the waterproof performance of through-hole department. In the process of attaching the protection plate to the side wall of the foundation pit, the anchoring piece is positioned in the slide rail under the force application effect of the side wall of the foundation pit, the abutting block is convenient to press downwards to be in contact with the anchoring piece, and the sharp end of the anchoring piece is inserted into the side wall of the foundation pit by applying force to the anchoring piece.

The utility model discloses further set up, arbitrary the curb plate is kept away from it the vertical recess of seting up in side of tensioning assembly, another the curb plate is kept away from at it the side protrusion of tensioning assembly be provided with recess joint complex sand grip, bury the rubber pad underground in the recess.

Through the arrangement, the side faces, far away from the tensioning assembly, of the two groups of side plates are respectively provided with the groove and the raised line matched with the groove, and the rubber pad is embedded in the groove. Thereby make adjacent curb plate of adjacent guard plate can joint each other, the passageway distance of marcing of extension infiltration improves waterproof performance. When the rubber pad set up and make tensioning assembly promote the curb plate and extrude each other, the rubber pad takes place deformation and carries out the shutoff with the clearance between the adjacent curb plate, has further improved waterproof performance.

The utility model discloses further set up, the tensioning assembly includes that the level sets up two sets of screw rods between two sets of curb plates and sets up the first swivel nut between two sets of screw rods, and is two sets of the screw rod respectively with two sets of the side of curb plate orientation each other is fixed, and is two sets of external screw thread on the screw rod sets up to the opposite direction, first swivel nut both ends and two sets of screw rod screw thread cup joint.

Through the setting, the tensioning assembly comprises two sets of screws and two sets of screw thread connection thread sleeves, the two sets of screws are fixed with the side faces of the two sets of side plates facing each other respectively, the external thread direction of the two sets of screws is opposite to each other, so that when the first thread sleeve is rotated, the two sets of screws move away from each other, the two sets of side plates are pushed away from each other, and the side plates adjacent to protection are extruded.

The utility model discloses further set up, a plurality of jacks have been seted up to the outer peripheral face circumference of first swivel nut, the jack can supply the cooperation of pegging graft of bracing piece.

Through the arrangement, the plurality of jacks matched with the size of the supporting rod are formed in the circumference of the outer peripheral surface of the first threaded sleeve, so that a user can insert the supporting rod into the jacks to rotate the first threaded sleeve, the force arm for rotating the first threaded sleeve is improved, and the rotation of the first threaded sleeve is more labor-saving.

The utility model discloses further set up, the bracing piece includes first inserted bar and second inserted bar, the screw thread has been seted up respectively to opposite external screw thread to the tip that first inserted bar and second inserted bar are close to each other, extending structure is including setting up second swivel nut between first inserted bar and the second inserted bar, the both ends of second swivel nut respectively with first inserted bar and second inserted bar screw thread cup joint.

Through the arrangement, the external thread screw directions of the first inserted bar and the second inserted bar are opposite to each other, so that when the second thread sleeve is rotated, the first inserted bar or the second inserted bar moves close to or away from each other, and the length of the supporting bar is adjusted.

The utility model discloses further set up, the outer peripheral face protrusion of second swivel nut is fixed with a plurality of handles, and is a plurality of the handle is followed the axis circumference of second swivel nut distributes.

Through the arrangement, the user can hold the handle to rotate the second threaded sleeve conveniently through the arrangement of the handle, and torque is applied to the second threaded sleeve.

To sum up, the utility model discloses following beneficial effect has:

1. the anchoring piece is arranged and the force is applied to the anchoring piece to enable the anchoring piece to be wedged into the side wall, so that after the anchoring piece is wedged into the side wall of the foundation pit, the connection relation between the protection plate and the side wall of the foundation pit is improved, the horizontal displacement resistance of the protection plate is improved, and when the tensioning assembly pushes the side plates to extrude each other, the displacement of the protection plate is reduced, so that the connection seam between the adjacent protection plates keeps good waterproof performance;

2. the tensioning assembly comprises two groups of screws and a first threaded sleeve which are respectively fixed with the side faces of the side plates facing each other, the screw directions of the two groups of screws are opposite to each other, the first threaded sleeve is in threaded connection with the two groups of screws, and a plurality of jacks which can be in plug-in fit with the supporting rods are formed in the peripheral surface of the first threaded sleeve along the circumference, so that a user can conveniently rotate the first threaded sleeve to realize jacking of the two groups of side plates;

3. the side faces, far away from the tensioning assembly, of the two groups of side plates are respectively provided with a groove and are fixedly provided with a convex strip, a rubber pad is further buried in the groove, the groove and the convex strip are mutually clamped and extrude the rubber pad to deform when the adjacent protection plates are installed, gaps between the two groups of side plates are plugged, and the waterproof performance between the two groups of side plates is further improved.

Drawings

FIG. 1 is a schematic structural diagram of the present embodiment;

FIG. 2 is a schematic structural view of another angle in the present embodiment;

fig. 3 is a sectional view of the shielding plate in this embodiment.

Reference numerals: 1. a protection plate; 11. a side plate; 12. a through hole; 13. an anchoring member; 131. an abutting surface; 132. a sharp end; 14. a slide rail; 15. a limiting plate; 16. a propping block; 17. a groove; 18. a convex strip; 21. a first threaded sleeve; 22. a screw; 23. a jack; 3. a support bar; 31. a first plunger; 32. a second plunger; 33. a second thread insert; 34. a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model discloses a foundation pit supporting structure, including the guard plate 1 of rectangle, all the protrusion in 1 both sides of guard plate is fixed with curb plate 11, and curb plate 11 stretches out to the direction of keeping away from the foundation pit lateral wall, curb plate 11 place plane with the perpendicular setting in 1 place plane of guard plate.

One side that protection plate 1 kept away from the foundation ditch lateral wall is two be provided with a plurality of groups between curb plate 11 and be used for applying pressure for curb plate 11 and make its tensioning subassembly that supports tightly with curb plate 11 on the adjacent protection plate 1, tensioning subassembly includes that the level sets up two sets of screw rods 22 between two sets of curb plates 11 and sets up the first swivel nut 21 between two sets of screw rods 22, two sets of screw rods 22 respectively with two sets of the side that curb plate 11 moves towards each other is fixed, and the external screw thread spiral shell on two sets of screw rods 22 sets up to opposite, and first swivel nut 21 both ends and two sets of screw rod 22 thread bush are connected. Therefore, the two groups of screw rods 22 can be pressed away from each other by rotating the first threaded sleeves 21, so that the side plates 11 press the side plates 11 of the adjacent protection plates 1.

Any side plate 11 on the same protection plate 1 is vertically provided with a groove 17 on the side far away from the tensioning assembly, the other side plate 11 is convexly provided with a convex strip 18 matched with the groove 17 in shape on the side far away from the tensioning assembly, and a rubber pad is further embedded in the groove 17. Thereby make the in-process of the mutual butt of curb plate 11 of adjacent guard plate 1, the mutual joint of sand grip 18 and recess 17 extrudees the rubber pad deformation, fills up the clearance between the curb plate 11 of two sides through the rubber pad, improves water-proof effects.

As shown in fig. 2 to 3, one side of the protection plate 1, which is far away from the side wall of the foundation pit, is fixed with a slide rail 14 which is vertically arranged in the length direction, the slide rail 14 comprises two groups of L-shaped angle steels, a certain distance is arranged between the two groups of angle steels, a clamping and sliding block 16 is arranged in the slide rail 14, the clamping and sliding block 16 slides up and down along the slide rail 14 on the side, which is far away from the side wall of the foundation pit, of the protection plate 1, an opening is arranged at the upper end of the slide rail 14, and a limiting and separating plate 15 for limiting the.

Wherein, the protection plate 1 is provided with a through hole 12 in a penetrating way, the through hole 12 is arranged inside the slide rail 14 and above the limit plate 15, and the through hole 12 is positioned in the motion stroke of the abutting block 16. The protection plate 1 is hinged with a circular arc anchoring piece 13 at the position of the through hole 12, and the axis of the hinged point of the anchoring piece 13 and the protection plate 1 is horizontally arranged with the plane where the protection plate 1 is located and the ground. One side of the anchoring piece 13 close to the abutting block 16 is provided with an abutting surface 131 contacting with the abutting block 16, the abutting surface 131 is matched with the through hole 12 in shape, one side of the anchoring piece 13 far away from the abutting block 16 is provided with a sharp end 132, and when the abutting surface 131 of the anchoring piece 13 is pushed by the abutting block 16 to block the through hole 12, the sharp end 132 is recessed in the side wall of the foundation pit, so that the anchoring of the anchoring piece 13 and the side wall of the foundation pit is realized.

Wherein, a supporting rod 3 for supporting between the bottom surface of the foundation pit and the protection plate 1 is fixedly inserted in one side of the abutting block 16 far away from the anchoring piece 13. The bracing piece 3 includes first inserted bar 31 and second inserted bar 32, and the tip that first inserted bar 31 and second inserted bar 32 are close to each other has the spiral shell respectively to opposite external screw thread, is provided with second swivel nut 33 between first inserted bar 31 and the second inserted bar 32, the both ends of second swivel nut 33 cup joint with first inserted bar 31 and second inserted bar 32 screw respectively. Wherein, a plurality of handles 34 are fixed on the outer peripheral surface of the second screw sleeve 33 in a protruding way, and the plurality of handles 34 are distributed along the circumference of the axis of the second screw sleeve 33.

Wherein, a plurality of jacks 23 are arranged on the circumference of the peripheral surface of the first thread sleeve 21, and the jacks 23 can be used for the insertion and matching of the support rod 3. Therefore, a user can conveniently insert the support rod 3 into the insertion hole 23 to rotate the first threaded sleeve 21, and the rotation of the first threaded sleeve 21 is more labor-saving.

The implementation principle of the embodiment is as follows:

the first step is as follows: measure the unwrapping wire, measure out the control stake on the work top surface of flattening, then according to the construction drawing requirement, measure out positions such as foundation ditch sideline, side slope stake, escape canal: according to three on-site reference control piles, temporary control piles around the foundation pit are measured and set out on the periphery of the site by adopting a theodolite, a total station, a level, a 50m steel ruler and the like;

secondly, excavating the foundation pit, wherein deformation of surrounding facilities caused by excavation of the foundation pit is controlled within an allowable range according to the principles of slope setting 1:1, zoning, partitioning, layering, symmetry and balance in the excavation process; when the foundation pit is excavated, the additional load on the ground is reduced to the minimum, the heavy load vehicle is strictly forbidden to be piled or passed at the side of the pit, and when the lower soil is excavated, the side slope of the upper support is protected, so that the drainage structure and the support structure cannot be collided.

Thirdly, constructing a supporting structure, and constructing the supporting structure in time after the earthwork is excavated, so as to reduce the deformation of the soil body as much as possible and ensure the safety of the foundation pit;

when the foundation pit supporting structure is installed, the protection plate 1 is attached to the side wall of the foundation pit, then the abutting block 16 is hammered downwards through tools such as a hammer to abut against the limiting plate 15, the abutting block 16 pushes the abutting surface 131 of the anchoring piece 13 to block the through hole 12, and the anchoring piece 13 is anchored with the side wall of the foundation pit, so that the protection plate 1 has the capability of resisting horizontal displacement. Then peg graft bracing piece 3 and first swivel nut 21, rotate first swivel nut 21 through holding bracing piece 3, make two screw rods 22 do the motion of keeping away from each other, and then realize two adjacent curb plate 11 mutual butts on the guard plate 1, it is that the rubber pad between the adjacent curb plate 11 takes place to deform, improves the waterproof performance between the adjacent guard plate 1. And finally, the support rod 3 is inserted into the abutting block 16, then the second screw rod 22 is rotated to abut against the support rod 3 and the bottom of the foundation pit, and the protection plate 1 is supported through the support rod 3.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The utility model provides a foundation pit supporting structure, includes a plurality of guard plates (1) with the laminating of foundation pit lateral wall, guard plate (1) both sides all are fixed with curb plate (11), the plane at curb plate (11) place with the plane at guard plate (1) place is perpendicular, characterized by: a plurality of groups of tensioning assemblies used for applying pressure to the side plates (11) to enable the side plates to be tightly abutted against the side plates (11) on the adjacent protection plate (1) are arranged between the two side plates (11), the protection plate (1) is provided with a through hole (12) in a penetrating manner, and the protection plate (1) is hinged with an anchoring piece (13) at the position of the through hole (12); one side, far away from the side wall of the foundation pit, of the protection plate (1) is connected with a propping block (16) in a sliding mode, the through hole (12) is formed in a sliding path of the propping block (16), and when the propping block (16) is propped against the anchoring piece (13), the anchoring piece (13) is sunken in the side wall of the foundation pit; one side of the abutting block (16) far away from the anchoring piece (13) is fixedly provided with a supporting rod (3) which is used for supporting between the bottom surface of the foundation pit and the protection plate (1) in an inserting mode.

2. A foundation pit supporting construction according to claim 1, wherein: the support rod (3) is provided with a telescopic structure.

3. A foundation pit supporting construction according to claim 1, wherein: the side that foundation ditch lateral wall was kept away from in guard plate (1) is fixed with slide rail (14) of vertical setting, it is in to support tight piece (16) slide in slide rail (14), through-hole (12) set up the lower extreme of slide rail (14), slide rail (14) bottom mounting have with limiting plate (15) of support tight piece (16) butt.

4. A foundation pit supporting construction according to claim 1, wherein: anchor member (13) with the pin joint axis level of guard plate (1) sets up, anchor member (13) wholly is circular-arcly, anchor member (13) are close to one side of supporting piece (16) be provided with supporting surface (131) of supporting piece (16) contact, supporting surface (131) with through-hole (12) shape fit, anchor member (13) are kept away from one side of supporting piece (16) is provided with sharp end (132), works as supporting piece (16) promote supporting surface (131) shutoff of anchor member (13) during through-hole (12), sharp end (132) are sunken in the foundation ditch lateral wall.

5. A foundation pit supporting construction according to claim 1, wherein: a groove (17) is vertically formed in the side face, away from the tensioning assembly, of any side plate (11), a convex strip (18) matched with the groove (17) in a clamping mode is convexly arranged on the side face, away from the tensioning assembly, of the other side plate (11), and a rubber pad is buried in the groove (17).

6. A foundation pit supporting construction according to claim 1, wherein: the tensioning assembly comprises two groups of screws (22) horizontally arranged between two groups of side plates (11) and a first threaded sleeve (21) arranged between the two groups of screws (22), the two groups of screws (22) are respectively fixed with the side faces, facing each other, of the two groups of side plates (11), the thread directions of external threads on the screws (22) are opposite, and the two ends of the first threaded sleeve (21) are in threaded sleeve connection with the two groups of screws (22).

7. A foundation pit supporting construction according to claim 6, wherein: a plurality of insertion holes (23) are formed in the circumference of the outer peripheral surface of the first threaded sleeve (21), and the insertion holes (23) can be used for the insertion and matching of the supporting rod (3).

8. A foundation pit supporting construction according to claim 2, wherein: bracing piece (3) include first inserted bar (31) and second inserted bar (32), the screw thread opposite external screw thread has been seted up respectively to the tip that first inserted bar (31) and second inserted bar (32) are close to each other, extending structure is including setting up second swivel nut (33) between first inserted bar (31) and second inserted bar (32), the both ends of second swivel nut (33) respectively with first inserted bar (31) and second inserted bar (32) thread bush.

9. A foundation pit supporting construction according to claim 8, wherein: a plurality of handles (34) are fixed on the outer peripheral surface of the second thread sleeve (33) in a protruding mode, and the handles (34) are distributed along the circumference of the axis of the second thread sleeve (33).