Semicircular-ring-shaped prefabricated well piece double-piece ring type connection type assembly type open caisson for pipe jacking

Abstract

The utility model discloses a semi-annular prefabricated well piece double-piece ring type connection assembly type open caisson for pipe jacking, which comprises an open caisson body, and the open caisson body is composed of a blade foot well piece section and a plurality of standard well piece ring sections; the blade foot well piece section is composed of two semicircular blade foot well pieces, and each standard well piece ring section is composed of two semicircular standard well pieces. The open caisson well body is formed by assembling the semicircular blade foot well pieces and the semicircular standard well pieces, the open caisson well body can be prefabricated in a factory and assembled on an engineering site, the construction efficiency of open caisson manufacturing is improved, and the open caisson well body is suitable for large-scale popularization and application. And the site construction period is shortened, so that the construction cost is reduced, and the starting working space requirement of the large-diameter jacking pipe can be met.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated caisson technology, and in particular to a prefabricated caisson with a double-ring connection of semi-circular prefabricated well plates for pipe jacking. Background Technology

[0002] In the field of underground engineering, the working shaft or receiving shaft during pipe jacking construction is often made of cast-in-place reinforced concrete caisson or integral precast caisson.

[0003] Cast-in-place caissons require a steel reinforcement processing area on-site for steel reinforcement binding, formwork erection, and caisson casting. This occupies a large area, requires a large number of construction workers, and necessitates the use of tall formwork support systems. Construction safety risks such as scaffolding erection and high-altitude operations are relatively high, and the construction period is long, resulting in higher overall economic costs. On the other hand, precast caissons are limited by the size and weight of hoisting and transportation, and cannot meet the starting work space requirements of large-diameter pipe jacking, which also has certain limitations.

[0004] Therefore, how to design a prefabricated caisson that balances economic efficiency and initial operational space requirements has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a prefabricated caisson with a double-ring connection of semi-circular prefabricated well plates for pipe jacking, the purpose of which is to improve the construction efficiency of the caisson and meet the starting working space requirements of large-diameter pipe jacking.

[0006] To achieve the above technical objectives, this utility model provides a prefabricated caisson with a semi-circular annular prefabricated well segment double-ring connection for pipe jacking, including a caisson body, wherein the caisson body is composed of a cutting edge well segment and multiple standard well segment segments;

[0007] The cutting edge segment is composed of two semi-circular cutting edge segments, and each standard segment is composed of two semi-circular standard segments; the two semi-circular cutting edge segments and the two semi-circular standard segments are fixedly connected by a set of circumferential connecting structures.

[0008] The vertical ends of a standard well segment adjacent to the cutting edge segment and the adjacent standard well segment are fixedly connected by several vertical connecting structures.

[0009] Preferably, adjacent sets of circumferential connection structures are not collinear in the vertical direction.

[0010] Preferably, adjacent sets of circumferential connection structures are staggered at 90° to each other in the circumferential direction.

[0011] Preferably, adjacent sets of circumferential connection structures are staggered by α° in the circumferential direction, where α is the angle of equal division of a semicircle.

[0012] Preferably, the caisson body has openings in the cutting edge plate during manufacturing, and the number and location of the openings can be adjusted as needed.

[0013] The beneficial effects of this utility model are:

[0014] Due to the above-mentioned structural design, the caisson body of this utility model is formed by assembling semi-circular cutting edge caisson plates and semi-circular standard caisson plates. It can be prefabricated in the factory and assembled on the construction site, which improves the construction efficiency of caisson production, shortens the on-site construction period, thereby reducing construction costs, and can also meet the starting working space requirements of large-diameter pipe jacking. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0017] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of an embodiment at point BB;

[0018] Figure 4 for Figure 1 A schematic diagram of the cross-sectional structure of another embodiment at point BB;

[0019] Figure 5 for Figure 1 A schematic diagram of the cross-sectional structure of another embodiment at point BB.

[0020] In the diagram: 1. Caisson body, 2. Cutting edge segment, 3. Standard segment, 4. Semi-circular cutting edge segment, 5. Semi-circular standard segment, 6. Circumferential connection structure, 7. Vertical connection structure, 8. Opening. Detailed Implementation

[0021] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this utility model.

[0022] like Figures 1-4 As shown, the prefabricated caisson with a semi-circular ring-shaped prefabricated well segment double ring connection for pipe jacking includes a caisson body 1, which is composed of a cutting edge well segment 2 and multiple standard well segment segments 3.

[0023] The cutting edge segment 2 is composed of two semi-circular cutting edge segments 4, and each standard segment segment 3 is composed of two semi-circular standard segments 5. The circumferential ends of the two semi-circular cutting edge segments 4 and the two semi-circular standard segments 5 are fixedly connected by a set of circumferential connecting structures 6.

[0024] A standard well segment 3 adjacent to the cutting edge well segment 2, and the vertical ends of the adjacent standard well segment 3 are fixedly connected by several vertical connecting structures 7.

[0025] Among them, the circumferential connection structure 6 and the vertical connection structure 7 can be one or more combinations of bolts, welded steel plates, and mortise and tenon joints.

[0026] The main innovation of this utility model is that the semi-circular cutting edge well plate 4 and the semi-circular standard well plate 5 can be manufactured in the factory, which improves construction efficiency and meets the starting working space requirements of large-diameter pipe jacking.

[0027] Specifically, in order to ensure the structural stability of the caisson body 1, adjacent sets of circumferential connecting structures 6 are not collinear in the vertical direction.

[0028] Furthermore, the caisson body 1 has openings 8 at the locations where the jacking pipe or pipeline passes through. The openings 8 can be pre-reserved during the fabrication of the semi-circular cutting edge well plate 4, or they can be excavated when the caisson body 1 sinks to the predetermined elevation. The number and position of the openings 8 in each semi-circular cutting edge well plate 4 can be adjusted arbitrarily according to the needs of pipeline crossing.

[0029] In this embodiment, adjacent sets of circumferential connecting structures 6 are staggered by α° in the circumferential direction, where α is the angle of equal division of a semicircle.

[0030] In other embodiments, adjacent sets of circumferential connection structures 6 are staggered at 90° to each other in the circumferential direction.

[0031] An opening 8 is left in one of the semi-circular cutting edge segments 4 of the cutting edge segment 2 during manufacturing.

[0032] like Figure 5 As shown, in some other embodiments, the two semi-circular cutting edge segments 4 of the cutting edge segment 2 are provided with a total of three openings 8, or the number and position of the openings can be adjusted as needed.

[0033] Construction process of this utility model:

[0034] At the predetermined location of the caisson body 1, the semi-circular cutting edge well plates 4 are first assembled circumferentially, that is, two semi-circular cutting edge well plates 4 are connected by multiple circumferential connecting structures 6 to form a cutting edge well plate segment 2, and the caisson process is used for the first sinking; then the semi-circular standard well plates 5 are assembled circumferentially, that is, two semi-circular standard well plates 5 are connected by multiple circumferential connecting structures 6 to form a standard well plate segment 3, and are connected and fixed to the aforementioned cutting edge well plate segment 2 by multiple vertical connecting structures 7 to complete the vertical connection, and the caisson process is used to continue sinking; continue to install the standard well plate segment 3, and sink segment by segment until it sinks to the predetermined elevation, at which point the assembly and positioning of the prefabricated caisson body 1 is completed.

[0035] The initial sinking can be carried out by vertically connecting the cutting edge segment 2 and the first standard segment 3 at the predetermined position of the caisson body 1 to form a whole, and then using the caisson process for the initial sinking; subsequently, the standard segment 3 is installed and sinked segment by segment until it sinks to the predetermined elevation, at which point the assembly and positioning of the prefabricated caisson body 1 is completed.

[0036] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A prefabricated caisson with double-ring connection for semi-circular annular well segments used in pipe jacking, comprising a caisson body, characterized in that: The caisson body is composed of a cutting edge segment and multiple standard segment segments; The cutting edge segment is composed of two semi-circular cutting edge segments, and each standard segment is composed of two semi-circular standard segments; the two semi-circular cutting edge segments and the two semi-circular standard segments are fixedly connected by a set of circumferential connecting structures. The vertical ends of a standard well segment adjacent to the cutting edge segment and the adjacent standard well segment are fixedly connected by several vertical connecting structures.

2. The prefabricated caisson with double-ring connection of semi-circular annular precast well segments for pipe jacking according to claim 1, characterized in that: Adjacent circumferential connection structures are not collinear in the vertical direction.

3. The prefabricated caisson with double-ring connection of semi-circular annular precast well segments for pipe jacking according to claim 2, characterized in that: Adjacent sets of circumferential connection structures are staggered at 90° to each other in the circumferential direction.

4. The prefabricated caisson with double-ring connection of semi-circular annular prefabricated well segments for pipe jacking according to claim 3, characterized in that: Adjacent circumferential connection structures are staggered in the circumferential direction at an angle of α°, where α is the angle of equal division of a semicircle.

5. The prefabricated semi-circular annular well segments double-ring connection type assembled caisson for pipe jacking according to any one of claims 1-4, characterized in that: The caisson body has at least one opening at the location of the cutting edge segment.

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