Steel plate supporting device for deep foundation pit

Abstract

The utility model provides a deep foundation pit steel plate supporting device, which belongs to the technical field of foundation pit supporting and comprises a supporting plate, a top supporting mechanism and a bottom supporting mechanism. The supporting plate is arranged on the side face of the foundation pit. The bottom of the supporting plate is thicker than the top of the supporting plate; the top supporting mechanism is arranged at the top of the supporting plate; the bottom supporting mechanism is arranged at the top of the supporting plate; the top supporting mechanism and the bottom supporting mechanism are used for supporting the opposite supporting plates. According to the steel plate supporting device for the deep foundation pit, when the foundation pit is supported, the top supporting mechanism and the bottom supporting mechanism are used for supporting the top and the bottom of the foundation pit respectively, and the supporting strength on the top and the bottom of the foundation pit is controlled by adjusting the top supporting mechanism and the bottom supporting mechanism; meanwhile, the thickness of the bottom of the supporting plate is larger than that of the top, so that the bottom of the supporting plate can bear larger pressure applied by the side wall of the foundation pit, and the bearing capacity of the supporting plate is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of foundation pit support, more specifically, relates to a deep foundation pit steel sheet support device. BACKGROUND

[0002] Steel sheet pile is a kind of section steel with locking, and its section is straight plate, groove and Z shape, etc., with various sizes and interlocking forms.The common ones are Larson type, Lakwanana type, etc.Its advantages are: high strength, easy to punch into hard soil layer;It can be constructed in deep water, and can be a cage when necessary by adding inclined support.It has good waterproof performance;It can form cofferdams of various shapes as needed and can be reused multiple times, so it has a wide range of applications.

[0003] The existing steel sheet support structure has the following defects: during construction, as the depth of the foundation pit increases, the pressure exerted by the foundation pit on the support structure increases, and at this time, the deformation of the support structure is larger.The top and bottom of the existing steel sheet support structure are basically the same in the use process, and there may be problems of excessive support at the top or insufficient support at the bottom. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a deep foundation pit steel sheet support device, which aims to solve the problem that the top and bottom of the existing steel sheet support structure are basically the same in the use process.

[0005] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing a deep foundation pit steel sheet support device, comprising:

[0006] Support plate, arranged on the side of the foundation pit;The thickness of the bottom of the support plate is greater than the thickness of the top;

[0007] Top support mechanism, arranged on the top of the support plate;And

[0008] Bottom support mechanism, arranged on the top of the support plate;The top support mechanism and the bottom support mechanism are used to support the opposite support plates.

[0009] In a possible implementation mode, the top support mechanism comprises:

[0010] First top support rod, connected to the top of the support plate;

[0011] Second top support rod, connected to the top of the support plate, and the first top support rod and the second top support rod are arranged on two opposite support plates respectively;And

[0012] A driving member, the first top support rod and the second top support rod are respectively arranged at two ends of the driving member, and the driving member is used to drive the first top support rod and the second top support rod to move away or close to each other.

[0013] In a possible implementation, the top of the support plate is provided with support platforms, and the first top support rod and the second top support rod are respectively connected to the two opposite support platforms.

[0014] In a possible implementation, the driving member is internally provided with a threaded hole, the first top support rod and the second top support rod are both inserted into the threaded hole and threadedly connected to the driving member, and when the driving member rotates, the first top support rod and the second top support rod move away or close to each other.

[0015] In a possible implementation, the bottom support mechanism comprises:

[0016] A first support assembly connected to the bottom of the support plate;

[0017] A second support assembly connected to the bottom of the support plate; the first support assembly and the second support assembly are respectively connected to the opposite support plates; and

[0018] A driving assembly arranged between the first support assembly and the second support assembly; the driving assembly is used to drive the first support assembly and the second support assembly to support the support plate.

[0019] In a possible implementation, the bottom of the support plate is provided with a connecting groove; the first support assembly comprises:

[0020] A first connecting seat arranged on one side of the driving assembly and connected to the connecting groove;

[0021] A third support rod hingedly connected to the first connecting seat at one end and hingedly connected to the driving assembly at the other end;

[0022] A second connecting seat arranged on the other side of the driving assembly and connected to the connecting groove; and

[0023] A fourth support rod hingedly connected to the second connecting seat at one end and hingedly connected to the driving assembly at the other end; the third support rod and the fourth support rod are symmetrically arranged about the driving assembly.

[0024] In a possible implementation, the driving assembly comprises:

[0025] A first threaded sleeve, the third support rod and the fourth support rod are respectively connected to two sides of the first threaded sleeve;

[0026] a second threaded sleeve, the second support assembly being connected with the second threaded sleeve; and

[0027] a threaded rod, penetrating in the first threaded sleeve and the second threaded sleeve, for driving the first threaded sleeve to be close to or away from.

[0028] In a possible implementation, the first threaded sleeve and the second threaded sleeve are opposite in thread direction.

[0029] In a possible implementation, the second support assembly is identical in structure to the first support assembly, and the first support assembly and the second support assembly are symmetrically arranged about the median plane of the first threaded sleeve and the second threaded sleeve.

[0030] In a possible implementation, the cross-sectional shape of the support plate is a right trapezoid, and the right angle surface of the support plate is attached to the foundation pit.

[0031] The deep foundation pit steel plate support device has the advantages that, compared with the prior art, the deep foundation pit steel plate support device uses the top support mechanism and the bottom support mechanism to support the top and bottom of the foundation pit respectively, controls the support intensity on the top and bottom of the foundation pit by adjusting the top support mechanism and the bottom support mechanism, and the thickness of the bottom of the support plate is greater than that of the top, so that the bottom of the support plate can bear greater pressure applied by the side wall of the foundation pit, thereby improving the bearing capacity of the support plate. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0033] Figure 1 The structural schematic diagram of the deep foundation pit steel plate support device provided by the embodiments of the present application is shown in the figure.

[0034] Figure 2 The structural schematic diagram of the top support mechanism provided by the embodiments of the present application is shown in the figure.

[0035] Figure 3 The structural schematic diagram of the bottom support mechanism provided by the embodiments of the present application is shown in the figure.

[0036] Explanation of reference signs:

[0037] 1, support plate; 11, support table; 12, connecting groove; 2, top support mechanism; 21, first top support rod; 22, second top support rod; 23, driving member; 3, bottom support mechanism; 31, first support assembly; 311, first connecting seat; 312, third support rod; 313, second connecting seat; 314, fourth support rod; 32, second support assembly; 33, driving assembly; 331, first threaded sleeve; 332, second threaded sleeve; 333, threaded rod. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0039] Referring to Figure 1 and Figure 3 , the deep foundation pit steel plate support device provided by the utility model will be described. The deep foundation pit steel plate support device comprises a support plate 1, a top support mechanism 2 and a bottom support mechanism 3. The support plate 1 is arranged on the side of the foundation pit, and the thickness of the bottom thereof is greater than that of the top. The top support mechanism 2 is arranged on the top of the support plate 1. The bottom support mechanism 3 is arranged on the top of the support plate 1. The top support mechanism 2 and the bottom support mechanism 3 are used to support the opposite support plates 1.

[0040] Compared with the prior art, the deep foundation pit steel plate support device provided by the utility model uses the top support mechanism 2 and the bottom support mechanism 3 to support the top and bottom of the foundation pit respectively, adjusts the top support mechanism 2 and the bottom support mechanism 3 to control the support intensity of the top and bottom of the foundation pit. The thickness of the bottom of the support plate 1 is greater than that of the top, so that the bottom of the support plate 1 can bear greater pressure applied by the side wall of the foundation pit, and the bottom of the support plate 1 with higher thickness can bear more support force. When supporting the side wall of the foundation pit, the staff can apply greater pressure to the support plate 1 through the bottom support mechanism 3, so that the support plate 1 can better support the side wall of the foundation pit.

[0041] Optionally, the top support mechanism 2 comprises a horizontally arranged first top support rod 21, a second top support rod 22 and a driving member 23. The first top support rod 21 and the second top support rod 22 are respectively used to support the top of two opposite support plates 1. A threaded hole is formed in the axis of the driving member 23, the first top support rod 21 and the second top support rod 22 are inserted into the threaded hole and threadedly connected with the driving member 23. The first top support rod 21 and the second top support rod 22 are provided with threads in opposite directions.

[0042] When supporting the top of the foundation pit, the supporting plate 1 is abutted against the sidewall of the foundation pit, and then the driving member 23 is rotated. The driving member 23 drives the first top supporting rod 21 and the second top supporting rod 22 to move away through the thread, and the first top supporting rod 21 and the second supporting rod gradually support the opposite two supporting plates 1 to be away from each other, so that the supporting plate 1 is abutted against the sidewall of the foundation pit.

[0043] Optionally, the supporting plate 1 is provided with a protruding supporting table 11 at the top. After the supporting plate 1 is attached to the inner wall of the foundation pit, the side surface of the supporting table 11 approaches the vertical surface. The first top supporting rod 21 and the second top supporting rod 22 are fixedly connected to the side surface of the supporting table 11. Specifically, the mounting seat is arranged at the end of the first top supporting rod 21 and the second top supporting rod 22, and the mounting seat is mounted on the supporting table 11 through the bolt.

[0044] Optionally, the bottom supporting mechanism 3 includes the first supporting assembly 31 and the second supporting assembly 32 mounted at the bottom of the supporting plate 1, and the driving assembly 33 arranged between the first supporting assembly 31 and the second supporting assembly 32. The driving assembly 33 is used for driving the first supporting assembly 31 and the second supporting assembly 32, so that the first supporting assembly 31 and the second supporting assembly 32 support the bottom of the supporting plate 1.

[0045] Optionally, the connecting groove 12 is arranged at the bottom of the supporting plate 1. The first supporting assembly 31 includes the first connecting seat 311 and the second connecting seat 313 mounted in the connecting groove 12, the third supporting rod 312, and the fourth supporting rod 314. The free end of the third supporting rod 312 is hingedly connected to the first connecting seat 311, and the free end of the fourth supporting rod 314 is hingedly connected to the second connecting seat 313. The hinged ends of the third supporting rod 312 and the fourth supporting rod 314 are hingedly connected to the upper end of the driving assembly 33.

[0046] Optionally, the driving assembly 33 includes the first threaded sleeve 331, the second threaded sleeve 332, and the threaded rod 333. The first threaded sleeve and the second threaded sleeve are respectively sleeved on the two ends of the threaded rod 333. The inner walls of the first threaded sleeve 331 and the second threaded sleeve 332 are provided with threads in opposite directions. When the threaded rod 333 is rotated, the threaded rod 333 drives the first threaded sleeve 331 and the second threaded sleeve 332 to move close to or away from each other.

[0047] The hinged ends of the third supporting rod 312 and the fourth supporting rod 314 are respectively hingedly connected to the two sides of the first threaded sleeve 331. The third supporting rod 312, the fourth supporting rod 314, and the first threaded sleeve 331 are coplanar, and the third supporting rod 312 and the fourth supporting rod 314 are not collinear.

[0048] Optionally, the second supporting component 32 has the same structure as the first supporting component 31. The first supporting component 31 and the second supporting component 32 are symmetrically arranged about the vertical plane between the first threaded sleeve 331 and the second threaded sleeve 332.

[0049] When supporting the bottom of the foundation pit, the threaded rod 333 is rotated to drive the first threaded sleeve 331 and the second threaded sleeve 332 to move closer or farther, thereby driving the third supporting rod 312 and the fourth supporting rod 314 to rotate, adjusting the distance between the first connecting seat 311 and the second connecting seat 313, so that the third supporting rod 312 and the fourth supporting rod 314 exert pressure on the supporting plate 1 to support the sidewall of the foundation pit.

[0050] Optionally, the cross-sectional shape of the supporting plate 1 is a right trapezoid. The right angle surface of the supporting plate 1 abuts against and fits the inner wall of the foundation pit.

[0051] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A steel sheeting support device for deep excavations, characterised in that, include: A support plate (1) is installed on the side of the pit; the thickness of the bottom of the support plate (1) is greater than the thickness of the top. A top support mechanism (2) is disposed on top of the support plate (1); and A bottom support mechanism (3) is provided on the top of the support plate (1); the top support mechanism (2) and the bottom support mechanism (3) are used to support the opposite support plate (1).

2. The deep excavation steel sheet pile retaining wall apparatus of claim 1, wherein, The top support mechanism (2) includes: The first top support rod (21) is connected to the top of the support plate (1); A second top support rod (22) is connected to the top of the support plate (1), and the first top support rod (21) and the second top support rod (22) are respectively disposed on two opposing support plates (1); and The driving member (23) has the first top support rod (21) and the second top support rod (22) respectively disposed at both ends of the driving member (23), and the driving member (23) is used to drive the first top support rod (21) and the second top support rod (22) away from or close to each other.

3. The deep excavation steel sheeting apparatus of claim 2, wherein, The top of the support plate (1) is provided with a support platform (11), and the first top support rod (21) and the second top support rod (22) are respectively connected to two opposite support platforms (11).

4. The deep excavation steel sheet pile retaining wall apparatus of claim 2, wherein, The drive member (23) has a threaded hole inside. The first top support rod (21) and the second top support rod (22) are both inserted into the threaded hole and threadedly engaged with the drive member (23). When the drive member (23) rotates, the first top support rod (21) and the second top support rod (22) move closer or further apart.

5. The deep excavation steel sheet pile retaining wall apparatus of claim 1, wherein, The bottom support mechanism (3) includes: The first support assembly (31) is connected to the bottom of the support plate (1); The second support assembly (32) is connected to the bottom of the support plate (1); the first support assembly (31) and the second support assembly (32) are respectively connected to the opposite support plates (1); and A drive assembly (33) is disposed between the first support assembly (31) and the second support assembly (32); the drive assembly (33) is used to drive the first support assembly (31) and the second support assembly (32) to support the support plate (1).

6. The deep excavation steel sheeting apparatus of Claim 5, wherein, The bottom of the support plate (1) is provided with a connecting groove (12); the first support assembly (31) includes: The first connecting seat (311) is disposed on one side of the drive assembly (33) and connected in the connecting groove (12); The third support rod (312) is hinged at one end to the first connecting seat (311) and at the other end to the drive assembly (33); A second connector (313) is disposed on the other side of the drive assembly (33) and connected to the connector slot (12); and The fourth support rod (314) is hinged at one end to the second connecting seat (313) and at the other end to the drive assembly (33); the third support rod (312) and the fourth support rod (314) are symmetrically arranged about the drive assembly (33).

7. The deep excavation steel sheeting apparatus of Claim 6, wherein, The driving assembly (33) comprises: a first threaded sleeve (331), the third support rod (312) and the fourth support rod (314) are respectively hinged on two sides of the first threaded sleeve (331); a second threaded sleeve (332), the second support assembly (32) is connected with the second threaded sleeve (332); and a threaded rod (333) penetrating through the first threaded sleeve (331) and the second threaded sleeve (332) for driving the first threaded sleeve (331) to move close to or away from.

8. The deep excavation steel sheeting of claim 7, wherein, The threaded directions of the first threaded sleeve (331) and the second threaded sleeve (332) are opposite.

9. The deep excavation steel sheet pile retaining wall apparatus of claim 7, wherein, The second support assembly (32) has the same structure as the first support assembly (31), and the first support assembly (31) and the second support assembly (32) are symmetrically arranged about the mid-vertical plane of the first threaded sleeve (331) and the second threaded sleeve (332).

10. The deep excavation steel sheeting apparatus of any one of claims 1 to 9, wherein, The cross-sectional shape of the support plate (1) is a right trapezoid, and the right angle surface of the support plate (1) is attached to the foundation pit.

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