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Tenon joint shield segment

A technology for mortise-jointing shield pipes and mortise-grooves, which is applied in shaft linings, tunnel linings, underground chambers, etc., can solve problems such as time occupation and difficult operation of tightening bolts, achieve firm bite, speed up shield construction process, The effect of improving splicing efficiency

Inactive Publication Date: 2019-01-15
徐州市三成铸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the shield segments are arc-shaped, the smooth butt joint of the upward screw grooves is also required to allow the arc-shaped bolts to pass through smoothly, so that the alignment of the screw groove holes of the two shield segments occupies most of the bolt connection time.
In addition, the bolts and nuts are located in the screw grooves and adhere to the pipe wall, making the operation of tightening the bolts more difficult

Method used

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  • Tenon joint shield segment
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  • Tenon joint shield segment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 and figure 2 As shown, a mortise-jointed shield segment includes an arc-shaped sheet body 1 , a circumferential screw groove 2 , a longitudinal screw groove 3 , and a sealing strip 4 . One end of the arc-shaped sheet body 1 has two tenons 6, and the other end has two tenon grooves 5. same curvature. When the shield segment is installed, the tenon 6 is inserted into the tenon groove 5. Since the curvature of the tenon 6 and the tenon groove 5 is the same as that of the arc-shaped sheet body 1, the arc-shaped circumferential spirals at both ends of the two arc-shaped sheet bodies 1 The groove 2 is automatically aligned, and the arc bolt can pass through the circumferential screw groove 2 smoothly, which greatly reduces the difficulty of aligning the circumferential screw groove 2, improves the connection efficiency of the circular upward arc bolt, and speeds up the shield tunneling process.

Embodiment 2

[0028] Such as image 3 As shown, a mortise-joint shield segment includes an arc-shaped sheet body 1, a circumferential screw groove 2, a longitudinal screw groove 3, and a sealing strip 4. Both ends of the arc-shaped sheet body 1 have a tenon groove 5 and a Tenon 6. Both the tenon head 6 and the tenon groove 5 are arc-shaped tenon grooves, and the curvature of the tenon head 6 and the tenon groove 5 is the same as that of the arc-shaped sheet body 1 . When the shield segment is installed, the mortise 5 and the tenon 6 of the two arc-shaped pieces 1 are inserted into each other. Since the curvature of the tenon 6 and the tenon 5 is the same as that of the arc-shaped piece 1, the two arc-shaped pieces The arc-shaped circumferential screw grooves 2 at both ends of 1 are automatically aligned, and the arc-shaped bolts can pass through the circumferential screw grooves 2 smoothly, which greatly reduces the difficulty of aligning the circumferential screw grooves 2 and improves th...

Embodiment 3

[0030] On the basis of Example 1, if staggered splicing is used, it is only necessary to shift the position of the longitudinal screw groove to both ends when prefabricating the shield segment, and at the same time move the tenon joint to the side of the arc-shaped sheet, To improve the butt joint efficiency of the two arc-shaped sheets in the longitudinal direction.

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Abstract

The invention relates to a tenon joint shield segment which comprises a curved piece body, circumferential bolt grooves, longitudinal bolt grooves and a sealing strip. Two ends and two sides of the curved piece body have tenon heads and mortises, both the tenon heads and the mortises are curved, and the curvature of the tenon heads and the mortises are the same with that of the curved piece body.The tenon heads and the mortises have anchor holes. When the shield segments are installed, tenon heads are inserted into the mortises, anchor rods pass through the anchor holes to clamp the tenon heads. According to the tenon joint shield segment, two ends of the tenon joint shield segment have tenon structures, the segments are connected through the tenon heads and the mortises, the connection efficiency of the shield segments is improved, and the shield construction process is accelerated. The invention provides the tenon joint shield segment, a tenon joint shield segment is inserted into an adjacent tenon joint shield segment through the tenon heads, the connection between the tenon joint shield segments is more firm, the probability of the deformation of a segment ring is little, andthe construction is convenient and efficient.

Description

technical field [0001] The invention relates to shield technology, in particular to a mortise-jointed shield segment. Background technique [0002] Shield tunnel construction is generally used in subway construction. Shield tunnel segment is the main assembly component of shield tunnel construction and the innermost barrier of the tunnel, which bears the role of resisting soil pressure, groundwater pressure and some special loads. The shield segment is the permanent lining structure of the shield tunnel. The quality of the shield segment is directly related to the overall quality and safety of the tunnel, and affects the waterproof performance and durability of the tunnel. Existing shield segments generally adopt arc-shaped sheet structure, and are sealed and waterproof by sealing strips. The arc-shaped sheet ring has arc-shaped screw grooves upward, and straight screw grooves in the longitudinal direction. The arc-shaped screw groove and the straight screw groove are used ...

Claims

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Application Information

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IPC IPC(8): E21D11/08
CPCE21D11/083
Inventor 齐大海
Owner 徐州市三成铸业有限公司
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