Assembly type open caisson semi-annular prefabricated well piece for pipe jacking

Abstract

The utility model discloses an assembly type open caisson semicircular prefabricated well piece for pipe jacking. The assembly type open caisson semicircular prefabricated well piece comprises a semicircular well piece body. A longitudinal joint face mortise is formed in the longitudinal connecting end face of the well piece body; a circular seam face mortise is formed in the circular connecting end face of the well piece body; a plurality of longitudinal seam connecting pieces are arranged on the longitudinal connecting end face of the well piece body. N circular seam connecting pieces are arranged on the annular connecting end face of the well piece body, and n is an even number; the positioning included angle between every two adjacent circular seam connecting pieces is 180 degrees / n; the positioning included angle between the circular seam connecting piece located at the head position or the tail position and the annular connecting end face of the well piece body is 180 degrees / (2n). The open caisson assembled by adopting the prefabricated well sheet can meet the requirements of hoisting load and transportation size, and also meets the requirement of an operation space for jacking a large-diameter jacking pipe into a working well.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of assembled sinking well, especially relates to half circular ring prefabricated well piece for pipe jacking. BACKGROUND

[0002] In the prior art, the assembled sinking well is usually divided into the whole prefabricated sinking well and the piece prefabricated assembled sinking well.

[0003] The whole prefabricated sinking well is limited by hoisting load and transportation size, the sinking well inner diameter is small, and the operation space requirement of the pipe jacking working well or receiving well cannot be met.

[0004] Therefore, how to improve the structure of the assembled sinking well to meet the hoisting, transportation and pipe jacking construction requirements has become a technical problem to be solved by the person skilled in the art. UTILITY MODEL CONTENTS

[0005] In view of the above defects of the prior art, the utility model provides a half circular ring prefabricated well piece for pipe jacking, which meets the hoisting load, transportation size, pipe crossing hole number and hole size requirements, and the operation space requirement of the large diameter pipe jacking working well.

[0006] To achieve the above technical purpose, the utility model provides a half circular ring prefabricated well piece for pipe jacking, which comprises a half circular ring well piece body, a longitudinal connecting end face of the well piece body is provided with a longitudinal seam joint surface tenon groove, a ring connecting end face of the well piece body is provided with a ring seam joint surface tenon groove, a plurality of longitudinal seam connecting pieces are arranged on the longitudinal connecting end face of the well piece body, n ring seam connecting pieces are arranged on the ring connecting end face of the well piece body, and n is an even number; wherein the positioning angle between adjacent ring seam connecting pieces is 180° / n, and the positioning angle between the ring seam connecting piece at the first or last position and the ring connecting end face of the well piece body is 180° / (2n).

[0007] Preferably, the longitudinal seam connecting piece is a reserved bolt hand hole or a pre-buried connecting steel plate.

[0008] Preferably, the ring seam connecting piece is a reserved bolt hand hole or a pre-buried connecting steel plate.

[0009] Preferably, the well piece body for the lower part of the assembled sinking well is further provided with a blade foot.

[0010] Preferably, a grouting hole is pre-set on the well piece body.

[0011] Preferably, the well piece body is provided with a through hole.

[0012] The well piece body of the utility model has the advantages of:

[0013] The well piece body of the utility model has the advantages of:

[0014] The well piece body of the utility model has the advantages of: BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of the well piece body of a specific embodiment of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the A end face in the embodiment shown in the figure; Figure 1

[0017] Figure 3 It is a structural schematic diagram of the B end face in the embodiment shown in the figure; Figure 1

[0018] Figure 4 It is a top view structural schematic diagram of the embodiment shown in the figure; Figure 1

[0019] Figure 5 It is a structural schematic diagram of the well piece body of the utility model after adding the blade foot;

[0020] Figure 6 It is a structural schematic diagram of the through hole reserved in the embodiment shown in the figure; Figure 5

[0021] It is a structural schematic diagram of the well piece body of the utility model after adding the blade foot; Figure 7 BRIEF DESCRIPTION OF DRAWINGS

[0022] In the figure: 1 well piece body, 2 longitudinal seam connecting piece, 3 ring seam connecting piece, 4 blade foot, 5 bolt hand hole, 6 connecting steel plate, 7 longitudinal seam seam surface mortise and tenon joint, 8 ring seam seam surface mortise and tenon joint, 9 grouting hole, 10 through hole. DETAILED DESCRIPTION

[0023] ​​​The utility model discloses a half circular ring prefabricated well piece for pipe jacking, which belongs to the field of pipe jacking.

[0024] Embodiment 1

[0025] As Figures 1-4 shown, the half circular ring prefabricated well piece for pipe jacking comprises a half circular ring well piece body 1.

[0026] A longitudinal joint end face of the well piece body 1 is provided with a longitudinal joint surface tenon groove 7, and a ring joint end face of the well piece body 1 is provided with a ring joint surface tenon groove 8. Through the cooperation of the tenon grooves, coarse positioning during splicing is realized, and the splicing strength is also enhanced.

[0027] The ring joint end face of the well piece body 1 is provided with n ring joint connectors 3, wherein n is an even number. In addition, the positioning included angle between adjacent ring joint connectors 3 is 180° / n. In this way, the n ring joint connectors 3 are uniformly distributed on the ring joint end face of the well piece body 1. Of course, the positioning included angle between the ring joint connector 3 located at the first or last position (i.e. closest to the longitudinal joint end face) and the ring joint end face of the well piece body 1 is 180° / (2n).

[0028] For example, when n is 2, i.e. two ring joint connectors 3 are arranged on one half circular ring prefabricated well piece of the utility model; the included angle between the two adjacent ring joint connectors 3 is 180° / 2=90°. In addition, they are respectively located at the first and last positions, and the positioning included angle between the two ring joint connectors 3 and the ring joint end face of the well piece body 1 is 180° / (2X2)=45°. When two half circular ring prefabricated well pieces of the utility model are spliced into a circular ring, a total of four ring joint connectors 3 are uniformly distributed on 360°.

[0029] For another example, when n is 4, i.e. four ring joint connectors 3 are arranged on one half circular ring prefabricated well piece of the utility model; the included angle between the four adjacent ring joint connectors 3 is 180° / 4=45°. In addition, the positioning included angle between the ring joint connector 3 located at the first or last position (i.e. closest to the longitudinal joint end face) and the ring joint end face of the well piece body 1 is 180° / (2X4)=22.5°. When two half circular ring prefabricated well pieces of the utility model are spliced into a circular ring, a total of eight ring joint connectors 3 are uniformly distributed on 360°.

[0030] When two or more circular rings are spliced along the axial direction, the requirement that the longitudinal joints of different circular rings are staggered and arranged along the ring direction by 90° central angle (staggered joint arrangement) can be realized. Such a splicing structure can bring a better stress structure.

[0031] Furthermore, the longitudinal connecting end face of the well plate body 1 of this utility model is also provided with several longitudinal seam connectors 2.

[0032] In practice, the circumferential joint connector 3 is either a pre-reserved bolt hand hole (so that the nut can be tightened and fixed after the bolt is passed through) or a pre-embedded connecting steel plate (with through holes for bolt connection).

[0033] In practice, the longitudinal seam connector 2 can also be the aforementioned pre-reserved bolt hand hole (so that the nut can be tightened and fixed after the bolt is passed through), or a pre-embedded connecting steel plate (with through holes for bolt connection).

[0034] Example 2

[0035] like Figures 5-6 As shown, when the semi-circular prefabricated well segment of this utility model is installed at the lower part of the assembled caisson, the well segment body 1 is also provided with a cutting edge 4.

[0036] Furthermore, the well body 1 is pre-set with grouting holes 9, which can also serve as lifting holes.

[0037] Furthermore, such as Figure 7 As shown, in some embodiments, multiple through-holes 10 can be pre-set on the well body 1. Figure 7 (There are 3 in the middle) to meet the needs of pipe jacking crossing.

[0038] 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 semi-circular annular well segment for pipe jacking, comprising a semi-circular well segment body (1); the longitudinal connecting end face of the well segment body (1) is provided with a longitudinal joint tenon groove (7); the circumferential connecting end face of the well segment body (1) is provided with a circumferential joint tenon groove (8); characterized in that: The longitudinal connecting end face of the well piece body (1) is provided with a plurality of longitudinal seam connectors (2); the annular connecting end face of the well piece body (1) is provided with n annular seam connectors (3), n is an even number; wherein the positioning included angle between adjacent annular seam connectors (3) is 180° / n; the positioning included angle between the annular seam connector (3) located at the first or last position and the annular connecting end face of the well piece body (1) is 180° / (2n).

2. The assembled well semi-circular ring prefabricated well piece for pipe jacking according to claim 1, characterized in that: The longitudinal seam connector (2) is a reserved bolt hand hole (5) or a pre-buried connecting steel plate (6).

3. The assembled well semi-circular ring prefabricated well piece for pipe jacking according to claim 1, characterized in that: The annular seam connector (3) is a reserved bolt hand hole (5) or a pre-buried connecting steel plate (6).

4. The assembled well semi-circular ring prefabricated well piece for pipe jacking according to any one of claims 1-3, characterized in that: The well piece body (1) for the assembled open caisson lower part is further provided with a blade foot (4).

5. The assembled well semi-circular ring prefabricated well piece for pipe jacking according to any one of claims 1-3, characterized in that: The well piece body (1) is provided with a grouting hole (9) in advance.

6. The assembled well semi-circular ring prefabricated well piece for pipe jacking according to any one of claims 1-3, characterized in that: The well piece body (1) is provided with a through hole (10) in advance.

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