Foundation pit inner supporting structure for land foundation pit construction

Abstract

The utility model discloses a foundation pit inner support structure for land foundation pit construction, which comprises support square steel, a bottom support device is arranged at the bottom of the support square steel and is used for assisting the support square steel in fixing, and a distance expansion device is arranged at the top of the support square steel; according to the device, an anchor rod I on the bottom supporting device is firstly inserted into the ground to be fixed by a worker, then a handle I is rotated to adjust the position of a movable block, then a threaded rod II is rotated through a handle II at the top to adjust the position of a connecting rod, so that a soil retaining plate I is tightly attached to a wall surface, and an anchor rod II behind the soil retaining plate I is inserted into soil; then the distance between the first soil retaining plate and the second soil retaining plate is adjusted by adjusting the adjusting bolt, so that the second soil retaining plate extends downwards as far as possible, then the angle of the third movable support is adjusted, the length is adjusted by rotating the threaded cone, and the ground supporting device is pricked into soil, so that fixing is achieved. And the effect of supporting the force in the inclined direction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pits, and more specifically, to a foundation pit inner support structure used for land foundation pit construction. Background Art

[0002] Foundation pit is an underground space formed by excavating from the ground for the construction of underground parts of buildings or structures, as well as the burial of underground facilities and equipment. Foundation pit engineering is a very important branch in the field of civil engineering, which involves engineering geology and hydrogeology, soil mechanics, foundation engineering, structural mechanics, soil-structure interaction, in-situ testing technology and construction.

[0003] After searching, the existing patent (Announcement No.: CN217923623U) discloses a support structure in a foundation pit, which relates to the technical field of foundation pit support, and improves the problem that most existing support structures are not convenient to be adaptively adjusted according to the width of the foundation pit and have poor applicability. The patent includes a foundation pit, a support plate and a support assembly, wherein the support assembly includes a bottom plate, a column and a top plate, and a first bidirectional screw is rotatably installed on the top of the bottom plate, and the surface of the first bidirectional screw is threadedly connected with two symmetrical moving blocks, and a diagonal support rod is rotatably installed between the moving block and the support plate, and a second bidirectional screw is rotatably installed on the top of the top plate, and the surface of the second bidirectional screw is threadedly connected with two symmetrical moving seats, and a support rod is fixedly installed between the moving seat and the support plate. The present application can adjust the spacing between the two diagonal support rods and the two support rods, so as to facilitate adaptive adjustment according to the width of the foundation pit and improve the applicability of the support assembly.

[0004] In the support structure in the foundation pit of this application, although the design allows the two sides of the foundation pit bottom to be supported by lateral force, in actual application, the gravity of the soil in the foundation pit is directed toward the pit, which may result in the effect of relying solely on lateral support being less than ideal. In addition, the left and right side plates of the support structure are not directly connected to the soil wall, which may reduce the fixing force and affect the overall stability. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a support structure inside a foundation pit for land foundation pit construction, so as to solve the problem that although the design allows supporting both sides of the bottom of the foundation pit by lateral force, in actual application, the gravity of the soil in the foundation pit is toward the inside of the pit, which may lead to the problem that the effect of relying solely on lateral support is not ideal.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a supporting structure in a foundation pit for land foundation pit construction, comprising supporting square steel, a bottom supporting device is provided at the bottom of the supporting square steel for assisting in fixing the supporting square steel, a distance expansion device is provided at the top of the supporting square steel, wall supporting devices are provided on both sides of the distance expansion device for supporting the earth wall of the foundation pit, an auxiliary connecting device is provided on one side of the wall supporting device for supporting the wall supporting device, a ground supporting device is provided on the outer surface of the auxiliary connecting device for supporting the auxiliary connecting device, and the bottom end of the auxiliary connecting device is connected to the bottom supporting device.

[0007] Preferably, the bottom supporting device includes a fixed bottom plate, a threaded rod, a movable block, an anchor rod, and a handle. The fixed bottom plate is fixedly installed on the bottom of the supporting square steel, the threaded rod is movably sleeved on the supporting square steel, both ends of the threaded rod are movably installed on the fixed bottom plate, the movable block is movably sleeved on the outer surface of the threaded rod, the anchor rod is fixedly installed on the bottom of the fixed bottom plate, and the handle is fixedly installed on one end of the threaded rod.

[0008] Preferably, the distance expansion device includes an expansion plate, a fixed block one, a threaded rod two, and a fixed block two, the expansion plate is fixedly installed on the top of the supporting square steel, the fixed block one is fixedly installed on the top of the expansion plate, the threaded rod two is movably installed between the fixed block one, and the fixed block two is fixedly installed on the top of the expansion plate.

[0009] Preferably, the distance expansion device also includes a limit rod, a movable plate, a connecting rod, and a second handle, wherein the limit rod is fixedly installed between the second fixed block, the movable plate is movably connected to the second threaded rod and the limit rod, the connecting rod is fixedly installed on one side of the movable plate, and the connecting rod is fixedly installed on one side of the second threaded rod.

[0010] Preferably, the wall supporting device includes a retaining plate 1, an adjustment hole, a retaining plate 2, an adjustment bolt, and an anchor rod 2. The retaining plate 1 is fixedly connected to the connecting rod by bolts, the adjustment hole is opened on one side of the retaining plate 1, the retaining plate 2 is sleeved in the retaining plate 1, the retaining plate 2 is fixedly installed at the bottom of the retaining plate 1 by the adjustment bolt, and the anchor rod 2 is fixedly installed on the rear sides of the retaining plate 1 and the retaining plate 2.

[0011] Preferably, the auxiliary connecting device includes a connecting plate, a movable support one, a long rod, and a movable support two, the connecting plate is fixedly installed on one side of the retaining plate two by bolts, the movable support one is fixedly installed on one side of the connecting plate, the long rod is movably installed on the movable support one, the movable support two is fixedly installed on the top of the movable block, and one end of the long rod is movably installed on the movable support two.

[0012] Preferably, the ground support device includes a movable support three, a threaded sleeve, and a threaded cone. The movable support three is fixedly mounted on the outer surface of the long rod, the threaded sleeve is movably mounted on the movable support three, and the threaded cone is connected to the threaded sleeve via a thread.

[0013] Preferably, the threaded rod one and the threaded rod two are configured as double-headed threaded rods, and the threads at both ends of the threaded rod one and the threaded rod two are opposite.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model has the following steps: a worker first inserts an anchor rod 1 on a bottom support device into the ground to fix it, then rotates a handle 1 to adjust the position of a movable block, and then rotates a threaded rod 2 through a handle 2 on the top to adjust the position of a connecting rod so that a retaining plate 1 is in close contact with a wall surface, and an anchor rod 2 behind the retaining plate 1 is driven into the soil, and then an adjusting bolt is adjusted to adjust the distance between the retaining plate 1 and the retaining plate 2 so that the retaining plate 2 is extended downward as much as possible, and then an angle of a movable support 3 is adjusted, and a threaded cone is rotated to adjust the length so that the ground support device is driven into the soil, thereby achieving fixation. By utilizing the above structure, an effect of supporting forces in an oblique direction is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the bottom support device of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the distance expansion device of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the wall support device of the utility model;

[0020] Figure 5 It is a schematic structural diagram of the auxiliary connection device and the ground support device of the utility model.

[0021] [reference numerals]

[0022] 1. Supporting square steel; 2. Bottom supporting device; 3. Distance expansion device; 4. Wall supporting device; 5. Auxiliary connecting device; 6. Ground supporting device; 201. Fixed bottom plate; 202. Threaded rod one; 203. Movable block; 204. Anchor rod one; 205. Handle one; 301. Expansion plate; 302. Fixed block one; 303. Threaded rod two; 304. Fixed block two; 305. Limit rod; 306. Moving plate; 307. Connecting rod; 308. Handle two; 401. Retaining plate one; 402. Adjusting hole; 403. Retaining plate two; 404. Adjusting bolt; 405. Anchor rod two; 501. Connecting plate; 502. Movable support one; 503. Long rod; 504. Movable support two; 601. Movable support three; 602. Threaded sleeve; 603. Threaded cone. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1

[0025] The preferred embodiment of the support structure in the foundation pit provided by the utility model for land foundation pit construction is as follows: Figures 1 to 5 As shown: it includes a supporting square steel 1, a bottom supporting device 2 is provided at the bottom of the supporting square steel 1 for auxiliary fixing of the supporting square steel 1, a distance expansion device 3 is provided at the top of the supporting square steel 1, wall supporting devices 4 are provided on both sides of the distance expansion device 3 for supporting the earth wall of the foundation pit, an auxiliary connecting device 5 is provided on one side of the wall supporting device 4 for supporting the wall supporting device 4, a ground supporting device 6 is provided on the outer surface of the auxiliary connecting device 5 for supporting the auxiliary connecting device 5, and the bottom end of the auxiliary connecting device 5 is connected to the bottom supporting device 2.

[0026] In this embodiment, the bottom supporting device 2 includes a fixed bottom plate 201, a threaded rod 202, a movable block 203, an anchor rod 204, and a handle 205. The fixed bottom plate 201 is fixedly installed on the bottom of the supporting square steel 1, the threaded rod 202 is movably sleeved on the supporting square steel 1, both ends of the threaded rod 202 are movably installed on the fixed bottom plate 201, the movable block 203 is movably sleeved on the outer surface of the threaded rod 202, the anchor rod 204 is fixedly installed on the bottom of the fixed bottom plate 201, and the handle 205 is fixedly installed on one end of the threaded rod 202.

[0027] In this embodiment, the distance expansion device 3 includes an expansion plate 301, a fixed block 1 302, a threaded rod 2 303, and a fixed block 2 304. The expansion plate 301 is fixedly installed on the top of the supporting square steel 1, the fixed block 1 302 is fixedly installed on the top of the expansion plate 301, the threaded rod 2 303 is movably installed between the fixed blocks 1 302, and the fixed block 2 304 is fixedly installed on the top of the expansion plate 301.

[0028] In this embodiment, the distance expansion device 3 also includes a limiting rod 305, a movable plate 306, a connecting rod 307, and a handle 2 308. The limiting rod 305 is fixedly installed between the fixed blocks 2 304, the movable plate 306 is movably connected to the threaded rod 2 303 and the limiting rod 305, the connecting rod 307 is fixedly installed on one side of the movable plate 306, and the connecting rod 307 is fixedly installed on one side of the threaded rod 2 303.

[0029] Embodiment 2

[0030] On the basis of the first embodiment, the preferred embodiment of the support structure in the foundation pit provided by the utility model for land foundation pit construction is as follows: Figures 1 to 5 As shown: the wall support device 4 includes a retaining plate 1 401, an adjustment hole 402, a retaining plate 2 403, an adjustment bolt 404, and an anchor rod 2 405. The retaining plate 1 401 is fixedly connected to the connecting rod 307 by bolts, the adjustment hole 402 is opened on one side of the retaining plate 1 401, the retaining plate 2 403 is sleeved in the retaining plate 1 401, the retaining plate 2 403 is fixedly installed at the bottom of the retaining plate 1 401 by the adjustment bolt 404, and the anchor rod 2 405 is fixedly installed on the rear side of the retaining plate 1 401 and the retaining plate 2 403.

[0031] In this embodiment, the auxiliary connecting device 5 includes a connecting plate 501, a movable support 1 502, a long rod 503, and a movable support 2 504. The connecting plate 501 is fixedly installed on one side of the retaining plate 2 403 by bolts, the movable support 1 502 is fixedly installed on one side of the connecting plate 501, the long rod 503 is movably installed on the movable support 1 502, the movable support 2 504 is fixedly installed on the top of the movable block 203, and one end of the long rod 503 is movably installed on the movable support 2 504.

[0032] In this embodiment, the ground support device 6 includes a movable support three 601, a threaded sleeve 602, and a threaded cone 603. The movable support three 601 is fixedly installed on the outer surface of the long rod 503, the threaded sleeve 602 is movably installed on the movable support three 601, and the threaded cone 603 is connected to the threaded sleeve 602 through a thread.

[0033] In this embodiment, the threaded rod 1 202 and the threaded rod 2 303 are configured as double-ended threaded rods, and the threads at both ends of the threaded rod 1 202 and the threaded rod 2 303 are opposite.

[0034] The working process of the utility model is as follows:

[0035] When in use, the worker first inserts the anchor rod 204 on the bottom support device 2 into the ground for fixation, then turns the handle 1 205 to adjust the position of the movable block 203, and then uses the top handle 2 308 to rotate the threaded rod 2 303 to adjust the position of the connecting rod 307 so that the retaining plate 1 401 is close to the wall, and the anchor rod 2 405 behind the retaining plate 1 401 is driven into the soil, and then the distance between the retaining plate 1 401 and the retaining plate 2 403 is adjusted by adjusting the adjusting bolt 404, so that the retaining plate 2 403 is extended downward as much as possible, and then the angle of the movable support 3 601 is adjusted, and the threaded cone 603 is rotated to adjust the length to drive the ground support device 6 into the soil, thereby achieving fixation.

[0036] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0037] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0038] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A support structure in a foundation pit for land foundation pit construction, comprising supporting square steel (1), characterized in that: The bottom of the supporting square steel (1) is provided with a bottom supporting device (2) for assisting in fixing the supporting square steel (1); the top of the supporting square steel (1) is provided with a distance expansion device (3); both sides of the distance expansion device (3) are provided with wall support devices (4) for supporting the earth wall of the foundation pit; an auxiliary connection device (5) is provided on one side of the wall support device (4) for supporting the wall support device (4); the outer surface of the auxiliary connection device (5) is provided with a ground support device (6) for supporting the auxiliary connection device (5); the bottom end of the auxiliary connection device (5) is connected to the bottom supporting device (2).

2. The support structure in a foundation pit for land foundation pit construction according to claim 1, characterized in that: The bottom support device (2) comprises a fixed bottom plate (201), a threaded rod (202), a movable block (203), an anchor rod (204), and a handle (205); the fixed bottom plate (201) is fixedly mounted on the bottom of the supporting square steel (1); the threaded rod (202) is movably sleeved on the supporting square steel (1); both ends of the threaded rod (202) are movably mounted on the fixed bottom plate (201); the movable block (203) is movably sleeved on the outer surface of the threaded rod (202); the anchor rod (204) is fixedly mounted on the bottom of the fixed bottom plate (201); and the handle (205) is fixedly mounted on one end of the threaded rod (202).

3. The support structure in a foundation pit for land foundation pit construction according to claim 2, characterized in that: The distance expansion device (3) comprises an expansion plate (301), a fixing block 1 (302), a threaded rod 2 (303), and a fixing block 2 (304); the expansion plate (301) is fixedly mounted on the top of the supporting square steel (1); the fixing block 1 (302) is fixedly mounted on the top of the expansion plate (301); the threaded rod 2 (303) is movably mounted between the fixing blocks 1 (302); and the fixing block 2 (304) is fixedly mounted on the top of the expansion plate (301).

4. The support structure in a foundation pit for land foundation pit construction according to claim 3, characterized in that: The distance expansion device (3) further comprises a limiting rod (305), a movable plate (306), a connecting rod (307), and a second handle (308); the limiting rod (305) is fixedly mounted between the second fixed block (304); the movable plate (306) is movably sleeved on the second threaded rod (303) and the limiting rod (305); the connecting rod (307) is fixedly mounted on one side of the movable plate (306); and the connecting rod (307) is fixedly mounted on one side of the second threaded rod (303).

5. The support structure in a foundation pit for land foundation pit construction according to claim 4, characterized in that: The wall support device (4) comprises a retaining plate 1 (401), an adjustment hole (402), a retaining plate 2 (403), an adjustment bolt (404), and an anchor rod 2 (405); the retaining plate 1 (401) is fixedly connected to a connecting rod (307) by means of bolts; the adjustment hole (402) is provided on one side of the retaining plate 1 (401); the retaining plate 2 (403) is sleeved in the retaining plate 1 (401); the retaining plate 2 (403) is fixedly mounted on the bottom of the retaining plate 1 (401) by means of the adjustment bolt (404); and the anchor rod 2 (405) is fixedly mounted on the rear sides of the retaining plate 1 (401) and the retaining plate 2 (403).

6. The support structure in a foundation pit for land foundation pit construction according to claim 5, characterized in that: The auxiliary connection device (5) comprises a connection plate (501), a movable support 1 (502), a long rod (503), and a movable support 2 (504); the connection plate (501) is fixedly mounted on one side of the retaining plate 2 (403) by means of bolts; the movable support 1 (502) is fixedly mounted on one side of the connection plate (501); the long rod (503) is movably mounted on the movable support 1 (502); the movable support 2 (504) is fixedly mounted on the top of the movable block (203); and one end of the long rod (503) is movably mounted on the movable support 2 (504).

7. The support structure in a foundation pit for land foundation pit construction according to claim 6, characterized in that: The ground support device (6) comprises a movable support three (601), a threaded sleeve (602), and a threaded cone (603); the movable support three (601) is fixedly mounted on the outer surface of the long rod (503); the threaded sleeve (602) is movably mounted on the movable support three (601); and the threaded cone (603) is connected to the threaded sleeve (602) via a thread.

8. The support structure in a foundation pit for land foundation pit construction according to claim 7, characterized in that: The threaded rod 1 (202) and the threaded rod 2 (303) are configured as double-ended threaded rods, and the threads at both ends of the threaded rod 1 (202) and the threaded rod 2 (303) are opposite.

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