Double-row steel sheet pile supporting structure for foundation pit construction

Abstract

The invention relates to the technical field of steel sheet pile construction supporting structures, in particular to a foundation pit construction double-row steel sheet pile supporting structure which comprises a lifting assembly arranged on a foundation pit outer foundation on the outer side of a to-be-supported steel sheet pile body; the connecting plate is mounted on the lifting assembly in a lifting manner; the distance adjusting unit is detachably mounted at the lower end of the connecting plate; the two supporting assemblies comprise connecting blocks symmetrically installed on the two sides of the distance adjusting unit and positioning wheels detachably installed on the connecting blocks through connecting discs; the supporting assemblies can be supported on a to-be-supported steel sheet pile body, the distance between the supporting assemblies can be changed and adjusted through the distance adjusting unit, and the device is suitable for steel sheet pile bodies of different specifications; the lifting assembly can drive the supporting assembly to ascend and descend, the continuous supporting effect needed by concrete ascending in the foundation pit construction process can be achieved, and compared with a traditional steel supporting structure, the supporting structure does not need to be disassembled and assembled repeatedly, is high in adjustability and is suitable for construction of double-row steel sheet pile foundation pits with different intervals.

Description

Technical Field

[0001] The present invention relates to the technical field of steel sheet pile construction support structures, and particularly to a double-row steel sheet pile support structure for foundation pit construction. Background Technique

[0002] In the field of foundation pit construction, the steel sheet pile support structure is a widely used support method. The steel sheet pile has characteristics such as high strength and convenient construction, and can be quickly driven into the ground to form a support system.

[0003] However, in the actual construction process, when concrete is poured in the area between the double-row steel sheet piles, as the pouring volume increases, it generates a large lateral pressure on the surrounding steel sheet pile structure. The pressure directly acts on the side steel sheet piles, which is extremely likely to cause the displacement of the steel sheet piles. The reason is that the intervention of the concrete pouring pressure will affect the friction between the steel sheet piles and the inner wall of the foundation pit, breaking the force balance. Once the lateral pressure of the concrete on the steel sheet piles exceeds the constraint ability of the soil on them, the steel sheet piles will displace in the horizontal direction. After the steel sheet piles are displaced, their resistance to the lateral pressure of the foundation pit soil drops significantly, and they cannot evenly disperse and transfer the soil pressure, resulting in the concentration of soil pressure in some areas, greatly increasing the risk of foundation pit collapse.

[0004] Currently, in order to improve the stability of the steel sheet piles, generally, multiple layers of support structures are detachably installed from bottom to top between the double-row steel sheet piles to prevent them from displacing. However, after pouring to the corresponding height, the support structures at the corresponding positions need to be disassembled, which has a large amount of work, low versatility of the support structures, and will interrupt the continuity of pouring, having an obvious impact on the construction quality and efficiency.

[0005] In summary, considering avoiding the traditional fixedly installed support structures, improving the stability of the steel sheet piles during concrete pouring to be applicable to the construction of double-row steel sheet piles with different spacings and improving the scope of application; in view of this, we propose a double-row steel sheet pile support structure for foundation pit construction. Summary of the Invention

[0006] The purpose of the present invention is to solve the deficiencies mentioned in the above background technique and provide a double-row steel sheet pile support structure for foundation pit construction.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A double-row steel sheet pile support structure for foundation pit construction, comprising:

[0009] A lifting assembly, arranged at the foundation outside the foundation pit on the outer side of the steel sheet pile body to be supported;

[0010] A connecting plate, installed on the lifting assembly in a lifting manner;

[0011] A distance adjustment unit, which is detachably installed at the lower end of the connecting plate and is used to adjust the distance between both ends;

[0012] Two groups of support assemblies, including connecting blocks symmetrically installed on both sides of the distance adjustment unit, and positioning wheels detachably installed on the connecting blocks through connecting discs. The positioning wheels on both sides are used to support the steel sheet pile body.

[0013] Preferably, the lifting assembly includes two U-shaped side frames with a top plate and a bottom plate installed at the upper and lower ends respectively, and a threaded rod is rotatably installed between the top plate and the bottom plate;

[0014] Limit units are installed on both sides of the U-shaped side frames. Lifting plates and connecting rods are respectively and fixedly installed at both ends of the limit units on both sides;

[0015] The threaded rod is threadedly installed on the lifting plate.

[0016] Preferably, the limit unit includes two side clamping plates clamped on the U-shaped side frames, and a first roller and a second roller are rotatably installed on the side clamping plates;

[0017] A cavity for inserting the U-shaped side frame is provided between the first roller and the second roller.

[0018] Preferably, the two ends of the limit unit are respectively and fixedly connected with a support plate and a convex block for installing the lifting plate and the connecting rod.

[0019] Preferably, the connecting plate is fixedly installed on the connecting rod, and a horizontal support plate is provided on the connecting plate, and an adjustment hole is provided on the horizontal support plate.

[0020] Preferably, the distance adjustment unit includes two side fixing blocks symmetrically arranged and installed below the horizontal support plate, and a plurality of cushion plates are detachably installed between the two side fixing blocks.

[0021] Preferably, the connecting block is detachably installed on the outer side of the side fixing block, and two vertical rods are detachably installed on the outer side of the side fixing block through positioning blocks;

[0022] An L-shaped insertion plate is inserted on the vertical rod through a cushion block, and the connecting disc is connected to the outer end of the L-shaped insertion plate.

[0023] Preferably, a spring is provided between the L-shaped insertion plate and the positioning block, and the spring is sleeved on the vertical rod.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] The double-row steel sheet pile support structure for foundation pit construction can be supported on the steel sheet pile body to be supported through the provided support components, and the distance between the support components can be adjusted by the distance adjustment unit, which is applicable to steel sheet pile bodies of different specifications and improves the scope of application. In addition, the provided lifting component can drive the support component to lift, which can meet the continuous support effect required for the rise of concrete during the foundation pit construction. Compared with the traditional steel support structure, this support structure does not need to be disassembled and assembled repeatedly, which is beneficial to improving the construction safety. And this structure is highly adjustable and can be applicable to the construction of double-row steel sheet pile foundation pits with different spacings, having practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The attached drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0027] Figure 1 It is a top view of the installation relationship of the embodiment of the present invention;

[0028] Figure 2 It is a schematic installation diagram of the single-sided steel sheet pile body of the embodiment of the present invention;

[0029] Figure 3 It is one of the overall structure schematic diagrams of the present invention;

[0030] Figure 4 It is the second of the overall structure schematic diagrams of the present invention;

[0031] Figure 5 It is the overall structure decomposition diagram of the present invention;

[0032] Figure 6 It is the decomposition diagram of the lifting component of the present invention;

[0033] Figure 7 It is the schematic diagram of the limiting unit of the present invention;

[0034] Figure 8 It is the decomposition diagram of the distance adjustment unit of the present invention;

[0035] Figure 9 It is the decomposition diagram of the support component of the present invention.

[0036] The meanings of the various reference numerals in the drawings are as follows:

[0037] 1. Foundation outside the foundation pit; 2. Steel sheet pile body;

[0038] 3. Lifting component; 31. Bottom plate; 32. Top plate; 33. U-shaped side frame; 34. Threaded rod; 35. Lifting plate; 36. Limiting unit; 361. Side clamping plate; 362. Support plate; 363. First roller; 364. Second roller; 365. Convex block; 37. Connecting rod;

[0039] 4. Connecting plate; 41. Horizontal support plate; 411. Adjusting hole;

[0040] 5. Spacing adjusting unit; 51. Side fixing block; 52. Cushion plate;

[0041] 6. Support assembly; 61. Connecting block; 62. Positioning block; 63. Vertical rod; 64. Cushion block; 65. Spring; 66. L-shaped insertion plate; 67. Connecting plate; 68. Positioning wheel. Detailed implementation manner

[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1-9 , the above technical solutions are described in detail by the following embodiments of the present invention:

[0044] In this embodiment, for the double-row steel sheet pile support structure for foundation pit construction, first, as the positional relationship shown in Figure 1 and Figure 2 , this support structure can be independently arranged on one side of the steel sheet pile body 2 to be supported, avoiding the problem of poor adjustability of the steel support installed between the traditional double-row steel sheet piles to be supported 2. This support structure is independently fixed to the steel sheet pile body 2 to be supported on a single side.

[0045] Specifically, as the structure shown in Figures 1-4 , a lifting assembly 3 is fixedly installed at the foundation 1 outside the foundation pit on the outer side of the steel sheet pile body 2 to be supported. The lifting assembly 3 in this embodiment is as the structure shown in Figure 6 , which includes a bottom plate 31 fixedly installed on the ground. The bottom plate 31 is connected to the top plate 32 through two U-shaped side frames 33. A threaded rod 34 is rotatably installed between the top plate 32 and the bottom plate 31 by a motor; in other embodiments, universal wheels can be installed under the bottom plate 31, and at the same time, counterweights can be added to obtain a stable support effect.

[0046] In this embodiment, in order to reduce wear during the lifting process, as shown in Figure 6 , Figure 7In the shown structure, a limiting unit 36 is installed on the two U-shaped side frames 33 on both sides. The limiting unit 36 includes two side clamping plates 361 clamped on the U-shaped side frame 33, and a first roller 363 and a second roller 364 are rotatably installed on the side clamping plates 361. A cavity is formed between the two side clamping plates 361 and the first roller 363 and the second roller 364, which is clamped and fitted on the U-shaped side frame 33.

[0047] Lifting plates 35 and connecting rods 37 are respectively and fixedly installed at both ends of the side clamping plates 361. The threaded rod 34 is threadedly installed on the lifting plates 35. Based on the screw principle, the whole limiting unit 36 can be driven to move vertically during the rotation of the threaded rod 34.

[0048] As Figures 3-5 In the shown structure, in this embodiment, a connecting plate 4 is fixedly installed on the connecting rod 37, and a horizontal support plate 41 is provided on the connecting plate 4. An adjustment hole 411 for detachably installing an adjustable distance unit 5 is provided on the horizontal support plate 41, and the adjustment hole 411 is suitable for installing adjustable distance units 5 with different spacings below.

[0049] As Figure 5 、 Figure 8 In the shown structure, the adjustable distance unit 5 includes two side fixing blocks 51 which are symmetrically arranged and installed below the horizontal support plate 41. In this embodiment, two layers of cushion plates 52 are detachably installed between the two side fixing blocks 51. For the convenience of disassembly and assembly, in this embodiment, the two side fixing blocks 51 are installed at the adjustment holes 411 through screws, and screw mounting holes corresponding to the positions are provided between the two layers of cushion plates 52 and the side fixing blocks 51.

[0050] Two support components 6 are detachably installed on the outer sides of the two layers of cushion plates 52. The support component 6 includes a connecting block 61 installed at the screw mounting holes through screws. As Figure 9 In the shown structure, two vertical rods 63 are detachably installed on the outer sides of the side fixing blocks 51 through positioning blocks 62. This part of the structure is detachable to facilitate the installation of the connecting block 61 and the side fixing blocks 51 to obtain a connection structure.

[0051] In this embodiment, an L-shaped insertion plate 66 is inserted on the vertical rod 63 through a cushion block 64. A connecting disk 67 is connected to the outer end of the L-shaped insertion plate 66, and a spring 65 is provided between the L-shaped insertion plate 66 and the positioning block 62 at the position as Figure 9 shown. The spring 65 is sleeved on the vertical rod 63. The connecting disk 67 is detachably and rotatably installed with a positioning wheel 68. By adjusting the distance between the two sides to be suitable for steel sheet pile bodies 2 of different specifications, the positioning wheel 68 can be pressed into the embedding groove of the steel sheet pile body 2, so as to achieve the effect of fixed support on the foundation pit. And in other embodiments, in order to improve the support effect and deal with higher steel sheet pile bodies 2, multiple layers of horizontal support plates 41 can be set to obtain multiple layers of positioning wheel 68 supports.

[0052] During the support process, concrete is poured. As the height of the concrete rises, the lifting assembly 3 can drive the connecting plate 4 to rise, and then continuously obtain the function of the positioning wheel 68 to support and maintain the positioning effect on the steel sheet pile body 2. Compared with the traditional steel support structure, this support structure does not need to be disassembled and assembled repeatedly, has a simple structure, a wide application range, strong adjustability, and is suitable for foundation pit construction with various specifications and spacings.

[0053] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0054] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

Claims

1. A double-row steel sheet pile support structure for foundation pit construction, characterized in that: include: A lifting assembly (3) is arranged at the outer foundation (1) of the foundation pit outside the steel sheet pile body (2) to be supported; A connecting plate (4) is installed on the lifting assembly (3) in a lifting manner; A distance adjustment unit (5) is detachably mounted at the lower end of the connecting plate (4) and is used to adjust the distance between the two ends; Two sets of support components (6) include connection blocks (61) symmetrically mounted on both sides of the distance adjustment unit (5), and positioning wheels (68) detachably mounted on the connection blocks (61) via connection plates (67), wherein the positioning wheels (68) on both sides are used for supporting the steel sheet pile body (2).

2. The double-row steel sheet pile support structure for foundation pit construction according to claim 1, characterized in that: The lifting assembly (3) comprises two U-shaped side frames (33) with a top plate (32) and a bottom plate (31) mounted at the upper and lower ends, and a threaded rod (34) is rotatably mounted between the top plate (32) and the bottom plate (31); The U-shaped side frames (33) on both sides are provided with limiting units (36), and both ends of the limiting units (36) on both sides are respectively fixedly provided with lifting plates (35) and connecting rods (37); The threaded rod (34) is threadably mounted on the lifting plate (35).

3. The double-row steel sheet pile support structure for foundation pit construction according to claim 2, characterized in that: The limiting unit (36) comprises two side clamping plates (361) clamped on the U-shaped side frame (33), and a first roller (363) and a second roller (364) are rotatably mounted on the side clamping plates (361); A cavity for inserting the U-shaped side frame (33) is provided between the first roller (363) and the second roller (364).

4. The double-row steel sheet pile support structure for foundation pit construction according to claim 3, characterized in that: A support plate (362) and a protrusion (365) for mounting the lifting plate (35) and the connecting rod (37) are respectively fixedly connected at both ends of the limiting unit (36).

5. The double-row steel sheet pile support structure for foundation pit construction according to claim 2, characterized in that: The connecting plate (4) is fixedly mounted on the connecting rod (37), and a horizontal support plate (41) is provided on the connecting plate (4), and an adjustment hole (411) is provided on the horizontal support plate (41).

6. The double-row steel sheet pile support structure for foundation pit construction according to claim 5, characterized in that: The distance adjustment unit (5) comprises two side fixing blocks (51) which are installed below the horizontal support plate (41) and are symmetrically arranged, and a plurality of pads (52) are detachably installed between the two side fixing blocks (51).

7. The double-row steel sheet pile support structure for foundation pit construction according to claim 6, characterized in that: The connecting block (61) is detachably mounted on the outside of the side fixing block (51), and two vertical rods (63) are detachably mounted on the outside of the side fixing block (51) via a positioning block (62); An L-shaped plug board (66) is inserted on the vertical rod (63) via a cushion block (64), and the connecting plate (67) is connected to the outer end of the L-shaped plug board (66).

8. The double-row steel sheet pile support structure for foundation pit construction according to claim 7, characterized in that: A spring (65) is provided between the L-shaped plug plate (66) and the positioning block (62), and the spring (65) is sleeved on the vertical rod (63).

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