High-stability steel sheet pile foundation pit supporting structure

Abstract

The utility model relates to the technical field of foundation pit supporting, and discloses a high-stability steel sheet pile foundation pit supporting structure which comprises a double-row pile body, a supporting assembly is arranged in the middle of the double-row pile body, connecting frames are distributed at the two ends of the supporting assembly, each connecting frame comprises a linkage frame, one end of each linkage frame is connected with a stud, and the other end of each linkage frame is connected with a steel sheet pile. The periphery of the linkage frame is attached to the inner wall of the guide groove, linkage rods are connected to the two sides of the linkage frame, and one end of each linkage rod is connected with a threaded frame. The two sets of steel sheet pile bodies are connected through the supporting frame and the cross frame structure, the overall impact resistance and stability of the supporting structure are improved, the two ends of the supporting structure are combined and installed rapidly through the guide rails in a sliding mode, and after installation, the whole supporting structure can be reinforced and assembled through the linkage frame only by adjusting the drill rod linkage stud to penetrate into the side wall of a foundation pit. Connection of the supporting structure and the foundation pit structure is more stable, part integration is high, and the assembling process is more convenient and faster.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit support, in particular to a high-stability steel sheet pile foundation pit support structure. Background Art

[0002] During the construction of engineering structure foundation, it is necessary to excavate the foundation pit and use steel sheet piles to provide necessary support for the foundation pit to prevent landslides and overturning after excavation. In order to ensure the safety of underground structure construction and the surrounding environment of the foundation pit, support, reinforcement and protection measures are adopted for the side walls of the foundation pit and the surrounding environment. The common methods of deep foundation pit support use support structures such as pile rows of different materials, pile rows plus anchor rods, anchor rods, soil nail walls, underground continuous walls, steel sheet piles plus purlins and cross braces, SMW method piles, etc. Among them, double-row steel sheet pile foundation pit support has greater rigidity and stability than single-row steel sheet pile support, and can provide an open foundation pit construction space, so it is widely used.

[0003] Prior art, such as the patent with publication number CN218116472U, discloses a double-row steel sheet pile foundation pit support structure, which passes side nails through the through holes and drives them into the side walls of the foundation pit until the limit plates are close to the inner sides of the front and rear rows of steel sheet piles. In this way, the side nails can be used as the connection between the front and rear rows of steel sheet piles and the side walls of the foundation pit, and the outer sides of the front and rear rows of steel sheet piles are anchored, which is beneficial to improving the overall stability of the support structure and solves the problem of lack of necessary connection between the double-row piles and the side walls of the foundation pit and the overall insufficient stability of the support structure.

[0004] The above prior art has obvious beneficial effects, but still has shortcomings:

[0005] In the above-mentioned prior art, a main crossbeam and a support rod structure are arranged between the two groups of steel sheet pile rows to provide support and stability between the two groups of steel sheet pile rows, and a side nail structure is used to assist in the connection to further enhance the stability. However, the outer walls of the steel sheet pile rows on both sides are connected only by side nails, and the connection stability is low. In addition, the overall structure has many parts and components, and the assembly process is cumbersome and not easy to reuse. Therefore, a high-stability steel sheet pile foundation pit support structure is proposed. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a high-stability steel sheet pile foundation pit support structure, which improves the overall impact resistance and stability of the support structure by connecting two groups of steel sheet pile bodies with a support frame and a cross frame structure, and the two ends are combined by guide rail sliding. After installation, only the drill rod needs to be adjusted to complete the reinforcement and assembly of the overall support structure through the linkage frame. The structure is more stable and the assembly process is convenient.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-stability steel sheet pile foundation pit support structure, including a double-row pile body, a support assembly is arranged in the middle of the double-row pile body, and connecting frames are distributed at both ends of the support assembly, the connecting frame includes a linkage frame, and one end of the linkage frame is connected to a bolt, the four sides of the linkage frame are fitted to the inner wall of the guide groove, and the two sides of the linkage frame are connected to linkage rods, one end of the linkage rod is connected to a threaded frame, and the inner wall of the threaded frame is connected to a drill rod, and one end of the drill rod is connected to a ring handle.

[0008] Preferably, the ring handle and the drill rod form a threaded structure with a linkage rod through a threaded frame, and the linkage rod is fixedly connected along the outer walls on both sides of the linkage frame.

[0009] Preferably, the linkage frame is slidably matched with two ends of the support assembly through guide grooves.

[0010] Preferably, the double-row pile body includes a front row of steel sheet piles, and one side of the front row of steel sheet piles is connected to a rear row of steel sheet piles via a supporting assembly, and both the front row of steel sheet piles and the rear row of steel sheet piles are provided with symmetrical openings.

[0011] Preferably, the dimensions of the front row of steel sheet piles match those of the rear row of steel sheet piles, and the front row of steel sheet piles and the rear row of steel sheet piles can be connected to the connecting frame through openings.

[0012] Preferably, the support assembly includes a support frame, and a cross frame is arranged in the middle of the support frame, guide rails are distributed at both ends of the support frame, and a guide rail frame is attached to one side of the guide rail, and the guide rail frame and the double-row pile body are fixedly connected.

[0013] Preferably, the cross frame and the guide rails are connected to the support frame by welding, and the support frame is slidably matched with the inner wall of the guide rail frame through the guide rails at both ends.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model improves the overall impact resistance and stability of the support structure by using a support frame and a cross frame structure to connect the two groups of steel sheet piles, and the two ends are quickly installed through the guide rail sliding combination. After installation, it is only necessary to adjust the drill rod linkage bolts to penetrate into the side wall of the foundation pit, and the overall support structure can be reinforced and assembled through the linkage frame. The connection between the support structure itself and the foundation pit structure is more stable, and the parts are highly integrated, making the assembly process more convenient.

[0016] 2. This support structure consists of only three parts: the front row of steel sheet piles, the rear row of steel sheet piles and the support assembly. The connecting frame is placed on the support assembly body, so that this support structure has strong integrity and is easy to assemble and use.

[0017] 3. The guide rails at both ends of the support frame are aligned with the inner wall of the guide rail frame. The connection can be completed by sliding the entire support frame into the inner wall of the front row of steel sheet piles and the rear row of steel sheet piles. The integration of the sliding structure and the connecting frame can further reduce the difficulty of assembly while maintaining the stability of the support.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the double-row pile body of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the support assembly of the utility model;

[0021] Figure 3 This is a schematic diagram of the side view of the linkage frame in the connecting frame of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the connecting frame of the utility model.

[0023] In the figure: 1. double-row piles; 101. front row steel sheet piles; 102. rear row steel sheet piles; 103. openings; 2. support assembly; 201. support frame; 202. cross frame; 203. guide rails; 204. guide rail frame; 3. connecting frame; 301. linkage frame; 302. bolts; 303. guide grooves; 304. linkage rods; 305. threaded frame; 306. drill rods. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in 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 in the utility model, all other embodiments obtained by ordinary technicians in this technical field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 A high-stability steel sheet pile foundation pit support structure of this embodiment includes a double-row pile body 1, a support assembly 2 is arranged in the middle of the double-row pile body 1, and connecting frames 3 are distributed at both ends of the support assembly 2, the double-row pile body 1 includes a front row of steel sheet piles 101, and one side of the front row of steel sheet piles 101 is connected to the rear row of steel sheet piles 102 through the support assembly 2, and the front row of steel sheet piles 101 and the rear row of steel sheet piles 102 are both provided with symmetrical openings 103.

[0026] like Figure 1-4 As shown, the support structure in the utility model is similar to the existing support structure, such as a double-row steel sheet pile foundation pit support structure with publication number CN218116472U. The main improvement of the utility model is that the support frame 201 and the cross frame 202 are used to connect the two groups of steel sheet pile bodies, so as to improve the overall impact resistance and stability of the support structure, and the two ends are slidably combined by the guide rail 203. After installation, only the drill rod 306 needs to be adjusted to complete the reinforcement and assembly of the overall support structure through the linkage frame 301. The structure is more stable and the assembly process is convenient; the front row of steel sheet piles 101 and The bolts 302 are all existing technologies. When using this support structure to install support operations around the foundation pit, the front row of steel sheet piles 101 and the rear row of steel sheet piles 102 can be first placed on the inner wall of the foundation pit, and then the support component 2 can be slid and placed so that the position of its opening 103 is aligned with the connecting frame 3 at both ends of the support component 2, so that it is convenient to insert the drill rod 306 and the bolts 302 to provide auxiliary functions for subsequent connection reinforcement. This support structure is composed of only three parts: the front row of steel sheet piles 101, the rear row of steel sheet piles 102 and the support component 2. The connecting frame 3 is placed on the main body of the support component 2, so that this support structure has strong integrity and is easy to assemble and use.

[0027] like Figure 2 As shown, the support assembly 2 includes a support frame 201, and a cross frame 202 is arranged in the middle of the support frame 201, guide rails 203 are distributed at both ends of the support frame 201, and a guide rail frame 204 is attached to one side of the guide rail 203, and the guide rail frame 204 and the double-row pile body 1 are fixedly connected. After the front row of steel sheet piles 101 and the rear row of steel sheet piles 102 are supported, the guide rails 203 at both ends of the support frame 201 are aligned with the inner wall of the guide rail frame 204, and then the overall support frame 201 is slidably assembled between the inner walls of the front row of steel sheet piles 101 and the rear row of steel sheet piles 102 to complete the connection. Through the connection integrity of the sliding structure and the connecting frame 3, the difficulty of assembly is further reduced on the basis of maintaining the stability of the support.

[0028] like Figure 3-4As shown, the connecting frame 3 includes a linkage frame 301, and one end of the linkage frame 301 is connected to a bolt 302, the four sides of the linkage frame 301 are fitted to the inner wall of the guide groove 303, and the two sides of the linkage frame 301 are connected to linkage rods 304, one end of the linkage rod 304 is connected to a threaded frame 305, and the inner wall of the threaded frame 305 is connected to a drill rod 306, and one end of the drill rod 306 is connected to a ring handle 307. After the support frame 201 and the front row of steel sheet piles 101 and the rear row of steel sheet piles 102 complete the sliding assembly, the drill rod 306 and the bolt 302 at both ends of the support frame 201 are aligned with the opening 103, and then the ring handles 307 on both sides of the linkage frame 301 can be rotated at the same time, so that the drill rod 306 rotates and advances along the threaded frame 305 until it passes through the opening 103 and drills into the side wall of the foundation pit. At this time, the bolt 302 is also synchronously nailed into the wall with the integrated connection of the linkage frame 301 to complete the assembly process.

[0029] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A high-stability steel sheet pile foundation pit support structure, comprising a double row of pile bodies (1), characterized in that: A support assembly (2) is provided in the middle of the double-row pile body (1), and connecting frames (3) are distributed at both ends of the support assembly (2), the connecting frame (3) comprises a linkage frame (301), and one end of the linkage frame (301) is connected to a bolt (302), the four sides of the linkage frame (301) are in contact with the inner wall of the guide groove (303), and the two sides of the linkage frame (301) are connected to linkage rods (304), one end of the linkage rod (304) is connected to a threaded frame (305), and the inner wall of the threaded frame (305) is connected to a drill rod (306), and one end of the drill rod (306) is connected to a ring handle (307).

2. A high stability steel sheet pile foundation pit support structure according to claim 1, characterized in that: The ring handle (307) and the drill rod (306) form a threaded structure with the linkage rod (304) through the threaded frame (305), and the linkage rod (304) is fixedly connected along the outer walls on both sides of the linkage frame (301).

3. A high stability steel sheet pile foundation pit support structure according to claim 1, characterized in that: The linkage frame (301) is slidably matched with two ends of the support assembly (2) via the guide groove (303).

4. A high stability steel sheet pile foundation pit support structure according to claim 1, characterized in that: The double-row pile body (1) comprises a front-row steel sheet pile (101), and one side of the front-row steel sheet pile (101) is connected to a rear-row steel sheet pile (102) via a support assembly (2), and both the front-row steel sheet pile (101) and the rear-row steel sheet pile (102) are provided with symmetrical openings (103).

5. A high stability steel sheet pile foundation pit support structure according to claim 4, characterized in that: The dimensions of the front row steel sheet piles (101) and the rear row steel sheet piles (102) are matched on all sides, and the front row steel sheet piles (101) and the rear row steel sheet piles (102) can be connected to the connecting frame (3) through the openings (103).

6. A high stability steel sheet pile foundation pit support structure according to claim 1, characterized in that: The support assembly (2) comprises a support frame (201), and a cross frame (202) is arranged in the middle of the support frame (201), guide rails (203) are distributed at both ends of the support frame (201), and a guide rail frame (204) is attached to one side of the guide rail (203), and the guide rail frame (204) and the double-row pile body (1) are fixedly connected.

7. A high stability steel sheet pile foundation pit support structure according to claim 6, characterized in that: The cross frame (202) and the guide rail (203) are connected to the support frame (201) by welding, and the support frame (201) is slidably matched with the inner wall of the guide rail frame (204) through the guide rails (203) at both ends.

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