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Shield segment and shield segment assembly structure

A shield segment and segment technology, which is applied in the field of shield segment assembly structure, can solve problems such as segment assembly collision, segment misalignment, segment shear damage, etc., to ensure construction quality, reduce damage, The effect of improving shear resistance

Pending Publication Date: 2019-08-09
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) During the construction process, the posture control of the shield machine is not good, the segments are misplaced, or the segments are collided during the assembly process, which may lead to the destruction of the concrete concave and convex tenons
[0006] 2) During the segment production process, due to the small space of the segment mold, it is difficult to bind and fix the structural steel bars at the concave and convex tenons
[0007] 3) The shear capacity of the concave and convex tenon of concrete is limited, which is easy to cause local shear failure of the segment, and instead causes water leakage

Method used

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  • Shield segment and shield segment assembly structure
  • Shield segment and shield segment assembly structure
  • Shield segment and shield segment assembly structure

Examples

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Embodiment 1

[0032] Such as Figure 2-Figure 7 , the embodiment of the present invention provides a shield segment, including a segment body 100, the segment body 100 has two longitudinal ends and two circumferential ends, and it is easy to know that the so-called longitudinal ends are the segment body The end of the segment body 100 in the longitudinal direction of the tunnel, that is, the end of the segment body 100 in the axial direction, the so-called circumferential end is the arc-shaped circumferential end of the segment body 100, and the longitudinal end is used for For splicing with an adjacent segment ring, the circumferential end is used for splicing with another adjacent segment body 100 to form a segment ring. One of the longitudinal ends is provided with a tenon portion 102, and the other longitudinal end is provided with a tenon portion 101 adapted to the tenon portion 102. When splicing with adjacent segment rings, the segment The tenon portion 101 of the body 100 is assemb...

Embodiment 2

[0051] Such as Figure 7 , the embodiment of the present invention also relates to a shield segment assembly structure, including two segment rings spliced ​​based on the concave-convex tenon structure, at least one of the two segments corresponding to the concave-convex tenon structure adopts the above-mentioned The shield segment provided by Embodiment 1.

[0052] Generally, the two segment rings are assembled by multiple sets of concave-convex tenon structures, preferably each concave-convex tenon structure includes the shield segment provided in the first embodiment above.

[0053] During the segment assembly construction, the tenon part 101 and the tenon part 102 of the two segment rings are squeezed together by the thrust of the jack of the shield machine and the fastening force of the segment bolts, and the tenon part 101 and the tenon part 102 An elastic pad 300 is interposed therebetween, which can transmit the pressure between the two, forming a shear-resisting rein...

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Abstract

The invention relates to a shield segment. The shield segment comprises segment bodies, wherein each segment body is provided with two longitudinal ends and two circumferential ends, one of the longitudinal ends of each segment body is provided with a concave tenon part, the other longitudinal end of each segment body is provided with a convex tenon part matched with the concave tenon part, steelcaps are arranged on the concave tenon parts and / or the convex tenon parts, and at least parts of areas of the corresponding tenon parts are covered with the steel caps. In addition, the invention further relates to a shield segment assembly structure. The shield segment assembly structure comprises two spliced segment rings based on a concave and convex tenon structure, at least one of the two segments corresponding to the concave and convex tenon structure adopts the shield segment. By arranging the steel caps on the tenon parts, the shear-bearing capacity of the tenon parts can be improved,and thus the shear-bearing capacity of the shield segment / segment rings is effectively improved; and the damage to concrete tenon parts caused by impacting in the processes of assembly and the likecan be reduced, and the construction quality of a shield tunnel is ensured.

Description

technical field [0001] The invention relates to a shield segment and a shield segment assembly structure using the shield segment. Background technique [0002] With the vigorous development of national infrastructure, more and more tunnels are built using the shield method in railways, highways and municipal engineering, and the tunnel sections are also getting larger and larger. At present, segment structures with a diameter of 15m in shield tunnels have been widely used. . [0003] The increase in the diameter of the shield segment means that the buoyancy force on the shield tunnel increases, and the shear force on the segment ring increases accordingly; , will also increase the segment hoop shear force. A concave-convex tenon structure can be set between one segment ring to control the amount of staggering between one segment ring and avoid damage to the tunnel structure and waterproof failure caused by a large amount of staggering between one segment ring. [0004] S...

Claims

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Application Information

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IPC IPC(8): E21D11/08
CPCE21D11/08E21D11/083
Inventor 肖明清薛光桥胡大伟孙文昊邓朝辉焦齐柱谢俊罗驰恒张忆
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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