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Segment circular joint connection assembly, tunnel segment structure and construction method

A technology for tunnel segments and connecting components, applied in tunnels, tunnel linings, earth-moving drilling, etc., can solve the problems of expensive materials, unreasonable force, cracking of segments, etc., to expand the range of activities, improve tolerance, The effect of improving connection strength

Active Publication Date: 2018-03-02
SHANGHAI CONSTRUCTION GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The use of bolts as connectors requires setting hand holes on the segment, which weakens the concrete segment, and is prone to local cracking of the segment during construction and use, which in turn leads to water leakage, affecting normal use and lining durability
[0005] 2) The fastening of bolts is basically manual work, which consumes a lot of time and manpower, and the construction speed is slow and the construction period is long
The C-H-C type longitudinal seam quick connector consumes more materials and costs more in the production of segments, and the three-piece type has one more force transmission link than the two-piece type connector, so there are more links where problems occur. Under the same conditions The stiffness is also relatively small
In addition, both types of connectors have unreasonable stress, and stress concentration is prone to occur during use

Method used

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  • Segment circular joint connection assembly, tunnel segment structure and construction method
  • Segment circular joint connection assembly, tunnel segment structure and construction method
  • Segment circular joint connection assembly, tunnel segment structure and construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0054] See Figure 1 to Figure 6 , This embodiment discloses a tube segment circumferential seam connection assembly, which includes a circumferential seam male part 2 and a circumferential seam female part 3 that are respectively pre-embedded on two tube segments 1 that need to be butted longitudinally; the circumferential seam male part 2 Comprising a head 21, a neck 22 and a tail 23 connected in sequence, the outer diameter of the head 21 is larger than the outer diameter of the neck 22, and the neck 22 and the tail 23 are connected by a universal head 24; The female girth slit 3 includes a front part 31 and a rear part 32 connected to each other. The front part 31 is provided with an inner cavity 311. An end of the front part 31 away from the rear part 32 is opened with a The opening 312 communicated with the inner cavity 311, the front part 31 is provided with a plurality of slider mechanisms 33 around the opening 312, the inner diameter of the opening 312 is larger than th...

Embodiment 2

[0065] This embodiment discloses a tunnel segment structure, including a plurality of segments, the segments are connected in the longitudinal direction by the segment circumferential seam connection assembly as described in the first embodiment, and the segments pass through the segment longitudinal in the circumferential direction. Seam connection component connection.

[0066] See Figure 7 to Figure 16 And please refer to Figure 1 to Figure 6 , The tube piece longitudinal seam connection assembly includes a longitudinal seam male piece 2'and a longitudinal seam female piece 3'which are respectively pre-embedded on the two pipe pieces 1 that need to be butted circumferentially, the longitudinal seam female piece 2'and the ring The male seam 3 is located on the adjacent end surface of the same tube piece 1. The male longitudinal seam 2'includes a cylinder 21' with a gradually changing cross-section, a connecting plate 22' and a base 23'. One end of the connecting plate 22' is f...

Embodiment 3

[0074] This embodiment discloses a construction method of the tunnel segment structure as described in the second embodiment, including the following steps:

[0075] The first step: see Figure 17 And please combine Figure 1 to Figure 16 , Using a crane to adjust the position of the pipe piece 1 with the longitudinal seam female part 3'and the circumferential seam male part 2 through the pipe piece installation arm 5, so that the groove 10 is aligned with the already installed longitudinal seam male piece 2 The longitudinal seam male part 2 of the tube piece 1 is aligned with the circumferential seam male part 2 which has already been installed with the circumferential seam female part 3 of the other tube piece.

[0076] For the second step, please refer to Figure 18 And please combine Figure 1 to Figure 16 , Through the segment mounting arm 5, the segment 1 with the longitudinal slit female part 3'and the circumferential seam male part 2 is gradually advanced along the directi...

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Abstract

The invention discloses a segment circular seam connection component, a tunnel segment structure and a construction method. The segment circular seam connection component comprises a circular seam convex part and a circular seam concave part, and the circular seam convex part and the circular seam concave part are pre-embedded in two segments requiring circular butt joint. The circular seam convex part comprises a head portion, a neck portion and a tail portion in sequential connection, an outer diameter of the head portion is larger than that of the neck portion, and the neck portion is connected with the tail portion through a universal joint. The circular seam concave part comprises a front portion and a rear portion, the front portion and the rear portion are connected with each other, the front portion is internally provided with an inner cavity, one end, away from the rear portion, of the front portion is provided with an opening communicated with the inner cavity, a plurality of slider mechanisms are arranged around the opening of the front portion, and an inner diameter of the opening is larger than an outer diameter of the head portion. The segment circular seam connection component has an allowance performance and is adaptive to construction environments and capable of meeting the requirements on stress, deformation and water resistance in construction and use of lining segments 1. In addition, simultaneity in longitudinal and circular butt joint of the segments can be realized, and quickness and convenience in construction, easiness for mechanization and automation in construction are achieved.

Description

Technical field [0001] The invention relates to a tunnel construction tool, in particular to a segment circumferential joint connection assembly, a tunnel segment structure and a construction method. Background technique [0002] Segment joint is an important part of shield tunnel fabricated lining segment. The performance and economy of the joint directly determine the performance and construction cost of the entire lining structure. At present, the lining of shield tunnels in China basically uses bolts as connectors, including short straight bolts, long straight bolts, bent bolts, and diagonal bolts. [0003] Bolts are intuitive and reliable to install as connectors, which can guarantee the required tightening force, but there are also many problems: [0004] 1) The use of bolts as connectors requires hand holes on the pipe segments. The hand holes weaken the concrete pipe segments. Partial cracking of the pipe segments is prone to occur during construction and use, which will cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/08
CPCE21D11/083
Inventor 程子聪王新新
Owner SHANGHAI CONSTRUCTION GROUP
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