Underground engineering pre-grouting waterproof and anti-seepage supporting piece

Abstract

The utility model relates to the technical field of anti-seepage supporting, in particular to an underground engineering pre-grouting waterproof anti-seepage supporting piece which comprises a plurality of supporting plates with arc-shaped cross sections, the supporting plates are sequentially spliced to form a barrel-shaped structure, the two ends of each supporting plate are splicing faces, and the splicing faces are connected with the supporting plates. A plurality of connecting bases are sequentially arranged on the inner walls, close to the splicing faces, of the supporting plates from top to bottom, the connecting bases on the opposite splicing faces of the adjacent supporting plates are connected through bolts, notches are formed in the end faces of the connecting bases located on the uppermost portion and the lowermost portion, and the corresponding connecting bases are spliced to enable the notches to form a cylindrical structure. And a positioning column is inserted into the cylindrical structure formed by the notches. In order to facilitate taking out of the supporting plate, the step surface of the splicing surface is arranged to be of an inclined transition structure, so that the supporting plate is more convenient to disassemble when needing to be disassembled, repeated use of the supporting plate is achieved, and construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of seepage prevention and support technology, and in particular to a pre-grouting waterproof and seepage prevention support component for underground engineering. Background Technology

[0002] During the construction of underground foundation pits, in order to ensure the safety of the underground structure construction and the surrounding area of ​​the foundation pit, it is usually necessary to support and reinforce the side walls of the foundation pit and the surrounding environment to prevent the collapse inside the foundation pit and the damage to the foundation pit during the infiltration of rainfall.

[0003] The current solution is to install support devices on the inner wall of the foundation pit. However, after grouting is completed, the support devices can usually only be destroyed and are difficult to reuse, which increases the support cost and the difficulty of construction. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0005] A pre-grouted waterproof and seepage-proof support component for underground engineering includes:

[0006] Several support plates with arc-shaped cross-sections are sequentially spliced ​​to form a cylindrical structure. The two ends of the support plates are splicing surfaces. Several connecting seats are sequentially arranged from top to bottom on the inner wall of the support plates near the splicing surfaces. The connecting seats at the opposite splicing surfaces of adjacent support plates are connected by bolts. The end faces of the uppermost and lowermost connecting seats are provided with slots. The corresponding connecting seats are spliced ​​to form a cylindrical structure with the slots. Positioning posts are inserted into the cylindrical structure formed by the slots.

[0007] As an improvement to the above technical solution, the support plate is provided with multiple through holes. Under normal conditions, the through holes are all closed and are distributed in a rectangular array.

[0008] As an improvement to the above technical solution, at least three connecting seats are provided at each splicing surface, and they are evenly distributed. The cross-section of the connecting seat is trapezoidal, and the connecting seat does not extend beyond the end face of the splicing surface.

[0009] As an improvement to the above technical solution, the splicing surface is a stepped surface, and the splicing surfaces of the opposing support plates mesh with each other, and the splicing surfaces on both sides of the support plate mesh with each other.

[0010] As an improvement to the above technical solution, the stepped surface of the splicing surface is a sloped transition structure, and vertical wear-resistant stripe structures are provided on the splicing surface. When adjacent splicing surfaces are matched, the wear-resistant stripe structures mesh with each other.

[0011] As an improvement to the above technical solution, the positioning column located at the top is a columnar structure, and the bottom end of the positioning column that contacts the bottom of the pit is conical.

[0012] The beneficial effects of this utility model are:

[0013] In this design, the support plates are connected by bolts, resulting in a simple and convenient connection structure. Furthermore, the cylindrical structure formed by the curved support plates provides stronger compressive strength. Disassembly is also straightforward; simply removing the bolts allows for the removal of the support plates one by one. Additionally, to facilitate removal, the stepped surfaces of the joints are designed as inclined transition structures, making disassembly of the support plates easier and enabling their reuse, thus reducing construction costs. Attached Figure Description

[0014] Figure 1 This is a front view of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the support plate in this utility model;

[0016] Figure 3 This is a diagram showing the fit and connection relationship between the splicing surfaces of adjacent support plates in this utility model.

[0017] Reference numerals: 100, support plate; 110, splicing surface; 120, connecting seat; 130, groove; 140, positioning post; 150, through hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following provides a more detailed description of the utility model. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of the utility model.

[0019] Currently, after the support device is installed on the inner wall of the foundation pit, it can usually only be destroyed after grouting is completed, and it is difficult to reuse it, which increases the support cost and the construction difficulty of the project.

[0020] See appendix Figures 1-3 As shown, in order to solve the above-mentioned technical problems, a pre-grouting waterproof and seepage-proof support component for underground engineering is provided, including: support plate 100, splicing surface 110, connecting seat 120, groove 130, and positioning column 140.

[0021] The support plate 100 has several sections with an arc-shaped cross-section. The support plates 100 are sequentially spliced ​​to form a cylindrical structure. The two ends of the support plate 100 are splicing surfaces 110. Several connecting seats 120 are sequentially arranged from top to bottom on the inner wall of the support plate 100 near the splicing surfaces 110. The connecting seats 120 at the opposite splicing surfaces 110 of adjacent support plates 100 are connected by bolts. The end faces of the uppermost and lowermost connecting seats 120 are provided with slots 130. The corresponding connecting seats 120 are spliced ​​to form a cylindrical structure with the slots 130. Positioning posts 140 are inserted into the cylindrical structure formed by the slots 130.

[0022] In this design, the support plates 100 are connected by bolts, resulting in a simple and convenient connection structure. Furthermore, the cylindrical structure formed by the arc-shaped support plates 100 provides stronger compressive strength. Disassembly is also straightforward; simply removing the bolts allows the support plates 100 to be removed piece by piece. Additionally, to facilitate removal, the stepped surface of the splicing surface 110 is designed as a sloping transition structure, making disassembly of the support plates 100 easier and enabling reuse, thus reducing construction costs.

[0023] Specifically, in this design, the central angle of each support plate 100 is 30°, so 12 support plates 100 are needed to form a cylindrical structure. After the support plates 100 are spliced ​​together, the mating surfaces are the splicing surfaces 110.

[0024] See appendix Figure 2 As shown, in one embodiment, the support plate 100 has multiple through holes 150. Normally, all through holes 150 are closed and arranged in a rectangular array. The through holes 150 reduce the weight of the support plate 100, thereby lowering costs and reducing lifting difficulty. Furthermore, the through holes 150 can extract water from the pre-cast cavity during rainfall and water accumulation, preventing any impact on grouting quality. Additionally, anchor bolts can be inserted before grouting to improve the bonding strength between the grout and the foundation pit after setting, and the insertion operation is also safer. Similarly, they can be used for vibration compaction after grouting to improve casting quality.

[0025] The through holes 150 are arranged in a rectangular array, which ensures the structural balance of the support plate 100 while also improving the efficiency of the insertion of rods and vibration.

[0026] See appendix Figure 3 As shown, in one embodiment, the splicing surface 110 is a stepped surface, and the splicing surfaces 110 of opposite support plates 100 interlock with each other. The splicing surfaces 110 on both sides of the support plate 100 interlock with each other. Therefore, when adjacent support plates 100 are spliced, the splicing position can bear part of the force through its own interlocking, and the remainder is borne by the bolts, thereby making the load-bearing capacity stronger.

[0027] Furthermore, the stepped surface of the splicing surface 110 has a sloped transition structure, and vertical wear-resistant stripes are provided on the splicing surface 110. When adjacent splicing surfaces 110 are mated together, the wear-resistant stripes interlock. The sloped transition structure of the stepped surface makes it easier to disassemble the support plate 100 without affecting or damaging the structure of adjacent splicing surfaces 110. The wear-resistant stripes prevent relative displacement of the splicing surfaces 110 after they have made full contact.

[0028] In this design, three connecting seats 120 are provided at each splicing surface 110, and they are evenly distributed. The cross-section of the connecting seat 120 is trapezoidal, and the connecting seat 120 does not extend beyond the end face of the splicing surface 110. The connecting seat 120 adopts a metal structure and is integrally formed with the support plate 100. To ensure that there are fewer gaps on the cylindrical structure formed by splicing the support plates 100, the corresponding two connecting seats 120 do not contact each other after the adjacent splicing surfaces 110 are fully fitted, so as to ensure the tightening force of the bolts.

[0029] In this design, the upper positioning column 140 is a columnar structure, and the bottom end of the positioning column 140 that contacts the bottom of the pit is tapered. Since the support structure may still be raised, when it needs to be raised, the cylindrical structure formed by the upper support plate 100 and the top surface of the lower cylindrical structure are connected and fixed by the positioning column 140 to ensure a stable connection.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. An underground engineering pre-grouting waterproof anti-seepage support piece, characterized in that, The utility model relates to a kind of underground engineering pre-grouting waterproof anti-seep support piece, including: Several cross-section arc supporting plates (100), the supporting plate (100) is sequentially spliced to constitute cylindrical structure, the supporting plate (100) both ends are splicing surface (110), the inner wall of the supporting plate (100) close to splicing surface (110) is sequentially provided with several connecting seats (120) from top to bottom, the connecting seat (120) of opposite splicing surface (110) of adjacent supporting plate (100) is connected by bolt, the end surface of the connecting seat (120) located in the uppermost and lowermost is provided with notch (130), corresponding connecting seat (120) splicing makes that notch (130) constitutes cylindrical structure, positioning column (140) is inserted on the cylindrical structure of notch (130) constitutes.

2. The underground engineering pre-grouting waterproof anti-seep support piece according to claim 1, wherein: A plurality of through holes (150) are formed in the supporting plate (100), and the through holes (150) are closed in normal state, and the through holes (150) are arranged in a rectangular array.

3. The underground engineering pre-grouting waterproof anti-seep support piece according to claim 1, wherein: Each connecting seat (120) at the splicing surface (110) is provided with at least three and is uniformly distributed, the cross section of the connecting seat (120) is trapezoidal, and the end surface of the connecting seat (120) does not protrude from the splicing surface (110).

4. The underground engineering pre-grouting waterproof anti-seep support piece according to claim 1 or 3, wherein: The splicing surface (110) is a stepped surface, the splicing surfaces (110) of the opposite supporting plates (100) are engaged with each other, and the splicing surfaces (110) on both sides of the supporting plate (100) are engaged with each other.

5. The underground engineering pre-grouting waterproof anti-seep support piece according to claim 4, wherein: The stepped surface of the splicing surface (110) is an inclined structure, the splicing surface (110) is provided with a vertical wear-resistant stripe structure, and the wear-resistant stripe structures are engaged with each other when the adjacent splicing surfaces (110) are matched with each other.

6. The underground engineering pre-grouting waterproof anti-seep support piece according to claim 1, wherein: The upper positioning column (140) is a columnar structure, and the bottom end of the lower positioning column (140) in contact with the pit bottom is conical.

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