CN214460449U

CN214460449U - Foundation pit supporting structure

Info

Publication number: CN214460449U
Application number: CN202022893401.8U
Authority: CN
Inventors: 郭莹; 宋海卓; 田旭
Original assignee: Beijing Jingrun Landscaping Engineering Co ltd; Beijing Urban and Rural Construction Group Co Ltd
Current assignee: Beijing Jingrun Landscaping Engineering Co ltd; Beijing Urban and Rural Construction Group Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-10-22
Anticipated expiration: 2030-12-02

Abstract

The utility model relates to a foundation ditch supporting construction belongs to civil engineering technical field, can not laminate with the foundation ditch lateral wall to the backplate, has reduced the backplate and to provide following technical scheme to the support intensity problem of foundation ditch, the technical essential of this application including be used for with the backplate of foundation ditch lateral wall butt and be used for with the bottom plate of foundation ditch diapire butt, bottom plate and foundation ditch diapire fixed connection, be provided with the angle adjustment mechanism that can adjust contained angle between the two between backplate and the bottom plate, angle adjustment mechanism includes the pivot, bottom plate and backplate rotate through the pivot and connect, be provided with in the pivot and restrict pivot pivoted spacing subassembly. This application has the laminating degree that improves backplate and foundation ditch lateral wall, improves the advantage of backplate to the support intensity of foundation ditch.

Description

Foundation pit supporting structure

Technical Field

The application relates to the technical field of civil engineering, in particular to foundation pit supporting structure.

Background

The foundation pit refers to a space below the ground excavated for the construction of a building foundation and a basement, and the foundation pit can cause the deformation of surrounding soil bodies in the excavation process, thereby affecting surrounding buildings and underground pipelines and endangering the personal safety of normal use or workers in serious cases.

In order to ensure the smooth construction of the foundation pit and the safety of surrounding buildings, a supporting structure is generally arranged between the foundation pit and the side wall of the foundation pit, the supporting structure of the foundation pit has various forms, and the supporting structure of the foundation pit is used for preventing underground water and soil outside the foundation pit from flowing into the foundation pit.

The foundation pit support of the existing building construction is usually formed by pouring reinforced concrete and matching with a corresponding protection plate, and because the included angle between the bottom wall of the foundation pit and the side wall of the foundation pit is different, the protection plate can not be adjusted according to the actual condition of the foundation pit when the foundation pit is supported by adopting a reinforced concrete pouring mode, so that the protection plate can not be attached to the side wall of the foundation pit, and the support strength of the protection plate to the foundation pit is reduced.

SUMMERY OF THE UTILITY MODEL

In order to improve the laminating degree of backplate and foundation ditch lateral wall, improve the backplate and to the support intensity of foundation ditch, this application provides the underground structure, adopts following technical means:

the utility model provides a foundation pit supporting structure, including be used for with the backplate of foundation ditch lateral wall butt and be used for with the bottom plate of foundation ditch diapire butt, bottom plate and foundation ditch diapire fixed connection, be provided with the angle adjustment mechanism that can adjust contained angle between the two between backplate and the bottom plate, angle adjustment mechanism includes the pivot, bottom plate and backplate rotate through the pivot and connect, be provided with in the pivot and restrict pivot pivoted spacing subassembly.

Through adopting above-mentioned technical scheme, place the bottom plate in the bottom of foundation ditch, and with the diapire fixed connection of bottom plate and foundation ditch, remove the rotation restriction of spacing subassembly to the pivot, use the pivot to rotate the backplate as the center of rotation, when contained angle between backplate and the bottom plate equals with the contained angle between foundation ditch lateral wall and the foundation ditch bottom plate, backplate and foundation ditch lateral wall laminating, then restrict the rotation of pivot again through spacing subassembly, realize the angle fixation between backplate and the bottom plate, keep the laminating state of backplate and foundation ditch lateral wall, improve the laminating degree of backplate and foundation ditch lateral wall, improve the intensity of strutting of backplate to the foundation ditch.

Optionally, spacing subassembly is including solid fixed ring and loose ring, gu fixed ring axis, loose ring axis, the coincidence of pivot axis three, gu fixed ring sets firmly in bottom plate or backplate, the loose ring can be followed the axis direction removal of pivot, gu fixed ring is provided with a plurality of spacing archs towards one side of loose ring, a plurality of spacing archs are circumference array distribution, the loose ring correspondence is seted up and is supplied spacing protruding male spacing groove, be provided with the regulating part that can adjust the distance between solid fixed ring and the loose ring in the pivot.

Through adopting above-mentioned technical scheme, when the angle between backplate and the bottom plate is adjusted to needs, adjust the distance between solid fixed ring and the activity ring through the regulating part, make spacing arch deviate from the spacing groove, remove the rotation restriction of solid fixed ring and activity ring, then rotate the backplate, when the backplate rotates to laminating with the foundation ditch lateral wall, it is close to each other between solid fixed ring and the activity ring to drive through the regulating part, make spacing arch peg graft in the inside of spacing groove again, realize the rotation between solid fixed ring and the activity ring and prescribe a limit, thereby realize the rotation restriction of countershaft.

Optionally, the adjusting part is provided with a threaded hole for the rotating shaft to pass through, the outer peripheral wall of the rotating shaft is provided with threads matched with the threaded hole, the rotating shaft is in threaded connection with the adjusting part, and the movable ring is arranged between the fixing ring and the adjusting part.

Through adopting above-mentioned technical scheme, through regulating part and pivot threaded connection, improve the joint strength between regulating part and the pivot, through the tight movable ring in regulating part top, can keep the tight state of subsides between movable ring and the solid fixed ring to keep spacing arch to insert the spacing inslot portion.

Optionally, a rotating groove is formed in one side, facing the adjusting piece, of the movable ring, the end portion of the adjusting piece is inserted into the rotating groove, a limiting inner ring for preventing the adjusting piece from coming off is arranged at an opening of the rotating groove, and the adjusting piece is rotatably connected with the rotating groove.

Through adopting above-mentioned technical scheme, rotate through regulating part and loose ring and connect, can be when keeping away from solid fixed ring's one side rotating regulating part, the regulating part can drive loose ring synchronous motion for spacing arch is deviate from the spacing groove, realizes the drive to the loose ring, convenient operation.

Optionally, a flange is provided at an edge of the adjusting member located outside the rotating groove.

Through adopting above-mentioned technical scheme, increase and the area of contact of regulating part, reduce operating personnel and the operating personnel condition of breaking away from when rotating the regulating part.

Optionally, an inclined strut mechanism is arranged between the guard plate and the bottom plate.

Through adopting above-mentioned technical scheme, can provide the connection stability between backplate and the bottom plate, improve the backplate to the intensity of strutting of foundation ditch lateral wall.

Optionally, the inclined strut mechanism includes an inclined strut and a sleeve, the inclined strut and the sleeve are sleeved, the inclined strut can slide along the axial direction of the sleeve, and a locking structure capable of limiting the position between the inclined strut and the sleeve is arranged between the inclined strut and the sleeve.

Through adopting above-mentioned technical scheme, through relative slip between diagonal brace and the sleeve pipe for the distance between diagonal brace free end and the sleeve pipe free end can suit with the contained angle between backplate and the bottom plate.

Optionally, the locking structure includes a locking bolt, the sleeve pipe is provided with a positioning screw hole at the sleeve end thereof, and the locking bolt penetrates through the positioning screw hole and abuts against the inclined strut.

Through adopting above-mentioned technical scheme, through the locking bolt of screwing, the tip of control locking bolt moves to the one side of being close to or keeping away from the diagonal brace, when the tip top of locking bolt was in the outer wall of diagonal brace, realized the rigidity to the diagonal brace.

Optionally, a supporting rod is arranged between the sleeve and the bottom plate, the supporting rod is a telescopic rod, and the supporting rod is hinged to the sleeve.

By adopting the technical scheme, the support strength of the inclined support mechanism is improved, the stability of the inclined support mechanism is improved, and the service life of the foundation pit support structure is prolonged.

In summary, the present application has the following beneficial effects:

firstly, placing a bottom plate at the bottom of a foundation pit, rotating a protection plate to enable the protection plate to be attached to the side wall of the foundation pit, limiting rotation of a rotating shaft again through a limiting assembly to fix an angle between the protection plate and the bottom plate, keeping an attachment state of the protection plate and the side wall of the foundation pit, improving attachment degree of the protection plate and the side wall of the foundation pit, and improving supporting strength of the protection plate on the foundation pit;

Secondly, the inclined support mechanism is arranged between the guard plate and the bottom plate, so that the connection stability between the guard plate and the bottom plate can be provided, and the support strength of the guard plate on the side wall of the foundation pit is improved;

the third, through setting up the telescopic bracing piece, can provide the stable support of bracing mechanism, increased the stability of bracing mechanism, prolonged foundation ditch supporting construction's life.

Drawings

Fig. 1 is a schematic overall structure diagram of a foundation pit supporting structure according to an embodiment of the present application;

fig. 2 is a partial exploded view of an excavation supporting structure according to an embodiment of the present application;

FIG. 3 is a top view of FIG. 1;

fig. 4 is a sectional view taken along line a-a in fig. 3.

In the figure, 11, the guard plate; 111. a first hinge block; 12. a base plate; 121. a second hinge block; 13. an anchor rod; 2. an angle adjusting mechanism; 21. a rotating shaft; 221. a fixing ring; 2211. a limiting bulge; 222. a movable ring; 2221. a limiting groove; 2222. a rotating groove; 2223. a limiting inner ring; 223. an adjustment member; 2231. a threaded hole; 2232. a plug-in ring; 2233. a flange; 3. a diagonal bracing mechanism; 31. a diagonal brace; 32. a sleeve; 321. a socket cavity; 33. a locking structure; 331. locking the bolt; 4. a support bar; 41. a fixed tube; 411. an inner cavity; 42. a connecting pipe; 5. and (6) positioning the bolt.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, for the utility model discloses a foundation pit supporting structure, including being used for the backplate 11 with the butt of foundation ditch lateral wall, backplate 11 is rectangular shaped plate, the bottom of backplate 11 is rotated and is connected with the bottom plate 12 that is used for with the butt of foundation ditch diapire, bottom plate 12 is rectangular shaped plate, threaded connection has four its vertically stock 13 of perpendicular to on the bottom plate 12, every stock 13 sets up to most advanced towards the one end of foundation ditch diapire, every stock 13 all can run through bottom plate 12 and plug-in underground, four stock 13 set up respectively in four bights of bottom plate 12, realize the fixed connection of bottom plate 12 and foundation ditch diapire.

Referring to fig. 1, an angle adjusting mechanism 2 capable of adjusting an included angle between the guard plate 11 and the bottom plate 12 is arranged between the guard plate 11 and the bottom plate 12, and the included angle between the guard plate 11 and the bottom plate 12 can be adjusted to be equal to an included angle between a side wall of a foundation pit and a bottom wall of the foundation pit.

Referring to fig. 1 and 2, the angle adjusting mechanism 2 includes a rotating shaft 21 and a limiting member for limiting the rotation of the rotating shaft 21.

With reference to fig. 1 and 2, the bottom end of the protection plate 11 is fixedly provided with two first hinge blocks 111, the two first hinge blocks 111 are arranged side by side and at intervals along the length direction of the protection plate 11, and a hinge groove is enclosed between the two first hinge blocks 111; the bottom plate 12 is fixedly provided with a second hinge block 121 on one side close to the guard plate 11, one side of the second hinge block 121 far away from the bottom plate 12 is inserted into the hinge groove, and the end parts of the first hinge block 111 and the second hinge block 121 are provided with cambered surfaces. Pivot 21 and the articulated piece 121 fixed connection of second, two first articulated pieces 111 have all seted up the rotation hole, and the both ends of pivot 21 run through respectively in rotating the hole and outwards extending, and pivot 21 rotates with the rotation hole and connects.

Referring to fig. 1 and 2, the stopper assembly includes a stationary ring 221 and a movable ring 222, and an adjusting member 223 capable of adjusting a distance between the stationary ring 221 and the movable ring 222.

With reference to fig. 1 and 2, the fixing ring 221 is cylindrical, the fixing ring 221 is fixedly connected to the first hinge block 111, and the fixing ring 221 and the second hinge block 121 are respectively disposed on two sides of the first hinge block 111.

Referring to fig. 1 and 2, the movable ring 222 is disposed in a cylindrical shape, a center of the movable ring 222 and a center of the fixed ring 221 are located on a same straight line, the straight line coincides with an axis of the rotating shaft 21, an end of the rotating shaft 21 sequentially penetrates through the center of the fixed ring 221 and the center of the movable ring 222, the fixed ring 221 and the rotating shaft 21 are rotatably connected, and the movable ring 222 can move toward a side close to or away from the fixed ring 221 along the axis of the rotating shaft 21.

With reference to fig. 1 and fig. 2, the fixing ring 221 has a plurality of limiting protrusions 2211 fixed on a side of the fixing ring 221 facing the movable ring 222, the limiting protrusions 2211 are distributed in a circumferential array around a center of the fixing ring 221, and a cross section of the limiting protrusion 2211 is arranged in a triangle. The movable ring 222 is correspondingly provided with limit grooves 2221 for inserting the limit protrusions 2211, the number of the limit grooves 2221 is equal to the number of the limit protrusions 2211, and when the limit protrusions 2211 are inserted into the limit grooves 2221, the relative position between the movable ring 222 and the fixing ring 221 is fixed.

Referring to fig. 1 and 2, the adjusting member 223 is sleeved outside the rotating shaft 21, the movable ring 222 is disposed between the fixed ring 221 and the adjusting member 223, the adjusting member 223 is cylindrical, and the center of the adjusting member 223, the center of the fixed ring 221, and the center of the movable ring 222 are located on a straight line, and the straight line coincides with the axis of the rotating shaft 21. Screw hole 2231 is seted up at its junction with pivot 21 to regulating part 223, and the periphery wall of pivot 21 is provided with the screw thread with screw hole 2231 looks adaptation for regulating part 223 and pivot 21 threaded connection, through rotating regulating part 223, make regulating part 223 can promote the side removal that the activity ring 222 is close to solid fixed ring 221, when regulating part 223 top during in activity ring 222, realize the rotation restriction to backplate 11.

Referring to fig. 1 and 2, the adjusting member 223 is rotatably coupled to the movable ring 222. The movable ring 222 is provided with a rotating groove 2222 on one side facing the adjusting piece 223, the adjusting piece 223 is fixedly provided with an inserting ring 2232 on one side facing the movable ring 222, the inserting ring 2232 can be inserted into the rotating groove 2222, the inserting ring 2232 is rotatably connected with the rotating groove 2222, the rotating groove 2222 is integrally formed with a limit inner ring 2223 at the opening thereof for preventing the inserting ring 2232 from coming off, the inserting ring 2232 and the limit inner ring 2223 are arranged in parallel, the adjusting piece 223 is rotated reversely, the adjusting piece 223 moves towards one side far away from the fixed ring 221, and the movable ring 222 can be driven to move synchronously through the mutual matching of the inserting ring 2232 and the limit inner ring 2223, so that the limit projection 2211 comes off the limit groove 2221.

Referring to fig. 1 and 2, a plurality of flanges 2233 are integrally formed on the outer circumferential surface of the adjusting member 223, and the plurality of flanges 2233 are circumferentially arrayed along the outer circumferential wall of the adjusting member 223, so that the operating area of the adjusting member 223 by an operator is increased, and the operator is prevented from coming off during the process of rotating the adjusting member 223.

Referring to fig. 3 and 4, a diagonal bracing mechanism 3 is provided between the shield plate 11 and the bottom plate 12. Bracing mechanism 3 is two sets of, and two sets of bracing mechanisms 3 set up along the width direction interval of backplate 11, improve the laminating degree of backplate 11 to the foundation ditch lateral wall.

Referring to fig. 3 and 4, the diagonal brace mechanism 3 includes a diagonal brace 31, a sleeve 32 and a locking structure 33.

Referring to fig. 3 and 4, the diagonal brace 31 is arranged obliquely, the diagonal brace 31 is sleeved with the sleeve 32, and the axis of the diagonal brace 31 is coincident with the axis of the sleeve 32. The sleeve 32 is provided with a socket cavity 321 along the axial direction for inserting the diagonal brace 31, the diagonal brace 31 is inserted into the socket cavity 321, the diagonal brace 31 can slide along the axial length direction of the sleeve 32, and the lengths of the diagonal brace 31 and the sleeve 32 are adapted to the rotation angle of the guard plate 11 by adjusting the depth of the end part of the diagonal brace 31 inserted into the socket cavity 321. One end of the inclined strut 31 far away from the sleeve 32 is hinged with one side of the guard plate 11 back to the side wall of the foundation pit, and the free end of the sleeve 32 is hinged with the upper surface of the bottom plate 12.

With reference to fig. 3 and 4, the locking structure 33 can limit the position of the diagonal brace 31, and achieve relative position fixation between the diagonal brace 31 and the sleeve 32. The locking structure 33 comprises a locking bolt 331, a positioning screw hole is formed in one side, close to the sleeving end, of the sleeve 32, the positioning screw hole is communicated with the sleeving cavity 321 of the sleeve 32, the end portion of the locking bolt 331 penetrates through the positioning screw hole and then can be tightly propped against the outer peripheral wall of the sleeving end of the diagonal brace 31, the position of the diagonal brace 31 is limited, and the locking bolt 331 is in threaded connection with the positioning screw hole.

With reference to fig. 3 and 4, a support rod 4 is disposed between the casing 32 and the bottom plate 12, the support rod 4 is an extendable rod, the support rod 4 includes a fixed tube 41, the fixed tube 41 is a circular tube, the fixed tube 41 is provided with an inner cavity 411 along the axial direction thereof, a connecting tube 42 is slidably connected in the inner cavity 411 of the fixed tube 41, the end of the connecting tube 42 extends out of the inner cavity 411 of the fixed tube 41, and one end of the connecting tube 42 extending out of the fixed tube 41 is hinged to the casing 32. The fixed pipe 41 is vertically disposed, and a lower end of the fixed pipe 41 abuts on an upper surface of the bottom plate 12.

Referring to fig. 3 and 4, the fixing tube 41 is provided with a positioning bolt 5, an end of the positioning bolt 5 penetrates through a sidewall of the fixing tube 41 and extends into an inner cavity 411 of the fixing tube 41, the positioning bolt 5 is in threaded connection with a connecting end of the fixing tube 41, and an end of the positioning bolt 5 abuts against an outer peripheral wall of the connecting tube 42.

The implementation principle of the embodiment is as follows: placing a bottom plate 12 at the bottom of a foundation pit, adjusting four anchor rods 13 to penetrate through the bottom plate 12 and be inserted into the bottom of the foundation pit, fixing the bottom plate 12 at the bottom of the foundation pit, adjusting a locking bolt 331 to be withdrawn from a sleeving cavity 321 of a sleeve 32, and at the moment, enabling the inclined strut 31 to be in a state of being capable of sliding along the axial direction of the sleeve 32; then the adjusting piece 223 is rotated outwards, the adjusting piece 223 drives the movable ring 222 to move towards one side far away from the fixed ring 221, so that the limiting protrusion 2211 is separated from the limiting groove 2221, the rotation limitation on the protection plate 11 is removed, the protection plate 11 is rotated, when the included angle between the protection plate 11 and the bottom plate 12 is equal to the included angle between the side wall of the foundation pit and the bottom plate 12 of the foundation pit, the protection plate 11 is attached to the side wall of the foundation pit, and the supporting effect of the protection plate 11 is improved; the reverse rotation regulating part 223, the regulating part 223 promotes the movable ring 222 and removes to the one side that is close to solid fixed ring 221, make spacing 2211 insert the inside of spacing groove 2221, continue to rotate regulating part 223, make regulating part 223 top tight movable ring 222, improve the joint strength between movable ring 222 and the solid fixed ring 221, the rotation of restriction backplate 11, it is fixed to realize the angle between backplate 11 and the bottom plate 12, keep the laminating state of backplate 11 and foundation ditch lateral wall, improve the laminating degree of backplate 11 and foundation ditch lateral wall, improve the intensity of strutting of backplate 11 to the foundation ditch.

Adjusting the positioning bolt 5 to make the end of the positioning bolt 5 deviate from the inner cavity 411 of the fixed pipe 41, at this time, the connecting pipe 42 can slide along the axial direction of the fixed pipe 41, adjusting the free end of the fixed pipe 41 to abut against the upper surface of the bottom plate 12, and then inserting the positioning bolt 5 into the inner cavity 411 of the fixed pipe 41 to abut against the connecting pipe 42 again, so that the stability of the diagonal bracing mechanism 3 is increased, and the service life of the foundation pit supporting structure is prolonged.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the 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. Foundation pit supporting structure, including be used for with backplate (11) of foundation ditch lateral wall butt and be used for with bottom plate (12) of foundation ditch diapire butt, bottom plate (12) and foundation ditch diapire fixed connection, its characterized in that, be provided with angle adjustment mechanism (2) that can adjust contained angle between the two between backplate (11) and bottom plate (12), angle adjustment mechanism (2) are including pivot (21), bottom plate (12) and backplate (11) rotate through pivot (21) and are connected, be provided with in pivot (21) and restrict pivot (21) pivoted spacing subassembly.

2. The foundation pit supporting structure according to claim 1, wherein the limiting component comprises a fixing ring (221) and a movable ring (222), the axes of the fixing ring (221), the axis of the movable ring (222) and the axis of the rotating shaft (21) coincide, the fixing ring (221) is fixedly arranged on the bottom plate (12) or the guard plate (11), the movable ring (222) can move along the axis direction of the rotating shaft (21), one side of the fixing ring (221), which faces the movable ring (222), is provided with a plurality of limiting protrusions (2211), the limiting protrusions (2211) are distributed in a circumferential array, the movable ring (222) is correspondingly provided with limiting grooves (2221) for the limiting protrusions (2211) to be inserted, and the rotating shaft (21) is provided with an adjusting piece (223) capable of adjusting the distance between the fixing ring (221) and the movable ring (222).

3. The foundation pit supporting structure according to claim 2, wherein the adjusting piece (223) is provided with a threaded hole (2231) for the rotating shaft (21) to pass through, the outer peripheral wall of the rotating shaft (21) is provided with a thread matched with the threaded hole (2231), the rotating shaft (21) is in threaded connection with the adjusting piece (223), and the movable ring (222) is arranged between the fixed ring (221) and the adjusting piece (223).

4. The foundation pit supporting structure according to claim 3, wherein one side of the movable ring (222) facing the adjusting piece (223) is provided with a rotating groove (2222), the end of the adjusting piece (223) is inserted into the rotating groove (2222), the opening of the rotating groove (2222) is provided with a limiting inner ring (2223) for preventing the adjusting piece (223) from falling off, and the adjusting piece (223) and the rotating groove (2222) are rotatably connected.

5. Foundation pit support structure according to claim 4, characterized in that a flange (2233) is provided at the edge of the adjustment piece (223) outside the turning groove (2222).

6. Foundation pit support structure according to claim 1, characterized in that a bracing mechanism (3) is arranged between the shield plate (11) and the bottom plate (12).

7. The foundation pit supporting structure according to claim 6, wherein the diagonal brace mechanism (3) comprises a diagonal brace (31) and a sleeve (32), the diagonal brace (31) and the sleeve (32) are sleeved, the diagonal brace (31) can slide along the axial direction of the sleeve (32), and a locking structure (33) capable of limiting the position between the diagonal brace (31) and the sleeve (32) is arranged between the diagonal brace (31) and the sleeve.

8. The foundation pit supporting structure according to claim 7, wherein the locking structure (33) comprises a locking bolt (331), the sleeve (32) is provided with a positioning screw hole at the sleeving end, and the locking bolt (331) penetrates through the positioning screw hole and abuts against the inclined strut (31).

9. The foundation pit supporting structure according to claim 8, wherein a supporting rod (4) is arranged between the sleeve (32) and the bottom plate (12), the supporting rod (4) is a telescopic rod, and the supporting rod (4) is hinged with the sleeve (32).