A foundation pit support structure for deep-buried municipal pipeline construction

Abstract

This utility model discloses a foundation pit support structure for the construction of deeply buried municipal pipelines. The structure includes a retaining plate vertically arranged against the sidewall of the foundation pit, with a crossbeam support member between them. The crossbeam support member has symmetrically rotatably mounted support groove beam rails distributed near its ends, and the inner wall of the support groove beam rails is movably fitted with an extension portion. It also includes a base fixed to the bottom of the foundation pit by ground anchors, on which slotted members are symmetrically arranged. The end of the extension portion extends into the port of the slotted member and is fixed by a pin inserted into the sidewall of the slotted member. This utility model increases the accessibility of both sides of the foundation pit by raising the height of the crossbeam support member supporting the retaining plate and then providing auxiliary support through the support groove beam rails.

Description

Technical Field

[0001] This utility model relates to a foundation pit support structure, specifically a foundation pit support structure for the construction of deeply buried municipal pipelines. Background Technology

[0002] Existing foundation pit support methods involve adding retaining plates to the sidewalls of the foundation pit, and then adding crossbeams to support the retaining plates on the opposite sidewalls. Referencing Chinese authorized patent, publication number CN222594884U, publication date: 2025-03-11, a foundation pit support frame is disclosed.

[0003] In the prior art, including the aforementioned patents, the method of using crossbeams for retaining walls is simple and quick to construct, and occupies little space inside the foundation pit, making it convenient for workers to move around within the pit. However, in order to ensure the force applied to the crossbeams after the retaining walls are stressed, the crossbeams need to be centrally positioned, which still causes some interference with the foundation pit space. Utility Model Content

[0004] The purpose of this invention is to provide a foundation pit support structure for the construction of deeply buried municipal pipelines, so as to solve the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foundation pit support structure for deep-buried municipal pipeline construction, including a retaining plate that is vertically arranged and attached to the side wall of the foundation pit, and a crossbeam support member is provided between the two. The crossbeam support member is symmetrically and rotatably provided with a support groove beam rail distributed near the end. The inner wall of the support groove beam rail is movably fitted with an extension.

[0006] It also includes a base fixed to the bottom of the pit by ground anchors, on which slots are symmetrically arranged. The end of the extension extends into the port of the slot and is fixed by a pin inserted into the side wall of the slot.

[0007] Preferably, the baffle is made of cast iron, with horizontally arranged baffles symmetrically welded on one side, and the beam support includes support legs that are embedded between the two baffles.

[0008] Preferably, the support leg is rectangular.

[0009] Preferably, the beam support includes a support portion which is welded to the support leg.

[0010] Preferably, the beam support includes a double-ended threaded screw that is threadedly connected to the two support portions, and a through-hole actuator is centrally mounted on the double-ended threaded screw.

[0011] Preferably, the support groove beam rail is hinged to the support part, and the cross-section of the support part is circular.

[0012] Preferably, the extension and the support groove beam rail are rotatably connected.

[0013] Preferably, the extension and the support groove beam rail are slidably connected and fixed by tenon rods.

[0014] In the above technical solution, the foundation pit support structure for deep-buried municipal pipeline construction provided by this utility model has the following beneficial effects: the crossbeam support members support the retaining plates abutting against the sidewalls of the foundation pit, and are distributed near the ends of the foundation pit. After completion, it is fixed to the base at the bottom of the foundation pit with ground stakes, and then the support groove beam rail on the crossbeam support members is deflected out, and then the extension is fixed to the slot piece on the base by pins to form a support system. The purpose is to raise the height of the crossbeam support members supporting the retaining plates, and then provide auxiliary support through the support groove beam rail, thereby increasing the passability on both sides of the foundation pit. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the structure of the first embodiment provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the second embodiment provided by this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Baffle plate; 11. Baffle plate; 2. Crossbeam support; 21. Support foot; 22. Support part; 23. Double-ended threaded screw; 231. Through-hole actuator; 3. Support groove beam rail; 4. Extension part; 5. Base; 51. Slot piece; 52. Pin; 6. Tenon. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-2This utility model provides a technical solution: a foundation pit support structure for deep-buried municipal pipeline construction, including a baffle plate 1 that is vertically arranged and attached to the side wall of the foundation pit, and a crossbeam support member 2 is provided between the two. The crossbeam support member 2 is symmetrically rotated and provided with a support groove beam rail 3 distributed near the end. An extension part 4 is movably assembled on the inner wall of the support groove beam rail 3.

[0022] It also includes a base 5 fixed to the bottom of the pit by ground anchors, on which slots 51 are symmetrically arranged. The end of the extension 4 extends into the port of the slot 51 and is fixed by a pin 52 inserted into the side wall of the slot 51.

[0023] Specifically, the entire baffle plate 1, support channel beam rail 3, base 5, and extension 4 mentioned above are all cast iron parts. In this embodiment, the base 5 can be located at the center of the pit or arranged in any other position, as long as it meets the maximum extension radius formed by the support channel beam rail 3 and the extension 4.

[0024] In the above technology, the crossbeam support 2 supports the retaining plate 1 that abuts against the side wall of the foundation pit, and is distributed near the port of the foundation pit. After completion, it is fixed to the base 5 at the bottom of the foundation pit by ground stakes, and then the support groove beam rail 3 on the crossbeam support 2 is deflected out, and then the extension part 4 is fixed to the slot part 51 on the base 5 by pin 52 to form a support system. The purpose is to raise the height of the crossbeam support 2 that supports the retaining plate 1, and then provide auxiliary support through the support groove beam rail 3, thereby increasing the passability on both sides of the foundation pit.

[0025] As a further embodiment of this utility model, the baffle plate 1 is a cast iron part, with horizontally arranged baffles 11 symmetrically welded on one side. The crossbeam support 2 includes a support foot 21, which is embedded between the two baffles 11. The support foot 21 is rectangular.

[0026] As a further embodiment of the present invention, the beam support member 2 includes a support portion 22, which is welded to the support foot 21.

[0027] Specifically, the beam support 2 provided in this embodiment has a fixed length and is fixed by the support feet 21 at both ends of the support part 22 being embedded between the two baffles 11.

[0028] As a further embodiment of the present invention, the crossbeam support 2 includes a double-ended threaded screw 23 that is threadedly connected to two support parts 22, and a through-hole actuator 231 is fixedly installed on the double-ended threaded screw 23 in the center.

[0029] Specifically, by inserting a pry bar or other tool into the perforation in the perforation actuator 231 and then rotating it, the support parts 22 are driven to move away from or closer to each other. The distance between the two baffles 11 is adjusted to accommodate the support requirements of different pit widths.

[0030] As another embodiment of the present invention, the support groove beam rail 3 is hinged to the support part 22, and the cross section of the support part 22 is circular.

[0031] As another embodiment further provided by this utility model, combined with Figure 1 As shown, the extension 4 and the support groove beam rail 3 are rotatably connected.

[0032] Specifically, in this embodiment, the base 5 is located at the center of the pit.

[0033] As another embodiment further provided by this utility model, combined with Figure 2 As shown, the extension 4 and the support groove rail 3 are slidably connected and fixed by tenon rods 6.

[0034] Specifically, the length of the extension 4 and the support groove beam rail 3 can be locked by inserting tenon rods 6, so that the base 5 can be arranged at any position on the horizontal plane, as long as it meets the maximum extension radius of the support groove beam rail 3 and the extension 4.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A foundation pit support structure for the construction of deeply buried municipal pipelines, characterized in that, It includes a baffle plate (1) that is vertically arranged against the side wall of the pit, and a crossbeam support (2) is provided between the two. The crossbeam support (2) is symmetrically rotated and provided with a support groove beam rail (3) distributed near the end. An extension (4) is movably assembled on the inner wall of the support groove beam rail (3). It also includes a base (5) fixed to the bottom of the pit by ground anchors, on which slots (51) are symmetrically arranged. The end of the extension (4) extends into the port of the slot (51) and is fixed by a pin (52) inserted into the side wall of the slot (51).

2. The foundation pit support structure for deep-buried municipal pipeline construction according to claim 1, characterized in that, The baffle plate (1) is a cast iron part, and horizontally arranged baffles (11) are symmetrically welded on one side. The crossbeam support (2) includes a support foot (21), which is embedded between the two baffles (11).

3. The foundation pit support structure for deep-buried municipal pipeline construction according to claim 2, characterized in that, The support foot (21) is rectangular.

4. A foundation pit support structure for deep-buried municipal pipeline construction according to claim 2, characterized in that, The beam support (2) includes a support part (22), which is welded to the support foot (21).

5. A foundation pit support structure for deep-buried municipal pipeline construction according to claim 4, characterized in that, The beam support (2) includes a double-ended threaded screw (23) that is threadedly connected to the two support parts (22), and a perforated actuator (231) is fixedly installed on the double-ended threaded screw (23) in the center.

6. A foundation pit support structure for deep-buried municipal pipeline construction according to claim 4, characterized in that, The support groove beam rail (3) is hinged to the support part (22), and the cross section of the support part (22) is circular.

7. A foundation pit support structure for deep-buried municipal pipeline construction according to claim 1, characterized in that, The extension (4) and the support groove rail (3) are rotatably connected.

8. A foundation pit support structure for deep-buried municipal pipeline construction according to claim 1, characterized in that, The extension (4) and the support groove rail (3) are slidably connected and fixed by tenon rods (6).

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