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Tunnel pavement longitudinal crack reinforcing treatment construction method

A technology of longitudinal cracks and construction methods, applied in the directions of roads, roads, road construction reinforcements, etc., can solve problems such as tunnel pavement cracking, and achieve the effect of preventing further expansion and ensuring safety.

Inactive Publication Date: 2021-02-02
山西省交通新技术发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a construction method for strengthening and treating longitudinal cracks in the tunnel pavement, which can effectively solve the problem of longitudinal cracking in the tunnel pavement, thereby ensuring the overall structure of the tunnel and the safety of road traffic

Method used

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  • Tunnel pavement longitudinal crack reinforcing treatment construction method
  • Tunnel pavement longitudinal crack reinforcing treatment construction method
  • Tunnel pavement longitudinal crack reinforcing treatment construction method

Examples

Experimental program
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Embodiment 1

[0021] combine figure 1 The cross-sectional view of the tunnel treatment shows the cable trough 1, the lock foot anchor pipe 2, the road surface 3, the micro steel pipe pile 4, and the I-beam 5. The I-beam 5 is connected to the formed steel frame through the channel steel 6, the I-beam 7 and the expansion bolt 8 and anchored to the second lining structure.

[0022] combine figure 2 The plan layout of the tunnel grouting pipe and steel arch frame shows the miniature steel pipe pile 4, the I-beam 5, the channel steel 6, and the I-beam 7, and the micro-steel pipe pile 4 is connected to the I-beam 5 by welding.

[0023] combine image 3 Schematic diagram of the joint between the channel steel and the transverse I-steel. It can be seen that the I-steel 5, the channel steel 6, and the expansion bolt 8 are connected by welding the I-steel 5 to the channel steel 6.

[0024] combine Figure 4 Schematic diagram of the junction of horizontal and vertical I-beams, I-beam 5 and I-beam...

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Abstract

The invention discloses a tunnel pavement longitudinal crack reinforcing treatment construction method which comprises the following steps: firstly, excavating a cable trough of a treatment section, arranging two rows of foot locking anchor pipes at arch feet, then excavating and chiseling off a pavement and concrete, additionally arranging miniature steel pipe piles on a tunnel base, carrying outpressure grouting, and transversely supporting a flat arch by adopting I-shaped steel, the I-shaped steel is longitudinally connected into a whole through the section steel and anchored to the liningstructure, and finally concrete is poured and the cable trough and the road surface are restored. In the tunnel pavement longitudinal crack treatment process, by additionally arranging the miniaturesteel pipe piles and the profile steel frames, surrounding rock deformation caused by large surrounding rock pressure at arch feet and side walls can be resisted, deformation cracking of a tunnel pavement subbase is limited, and therefore the purpose of pavement crack treatment is achieved.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a construction method for strengthening and treating longitudinal cracks on tunnel pavement. Background technique [0002] During the long-term operation of the tunnel, due to the poor geological conditions and poor water stability of the tunnel base in the water-rich section or the weathered rock section, the self-supporting capacity of the surrounding rock decreases and cracks occur, which causes longitudinal cracks in the pavement structure and affects the safe operation of the tunnel. According to the pressure distribution characteristics of the tunnel surrounding rock, it can be seen that the surrounding rock pressure at the arch foot and side wall of the tunnel is relatively high, and the surrounding rock pressure at the inverted arch is relatively small, but the inverted arch can resist the deformation of the arch foot. Therefore, when the bearing ca...

Claims

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Application Information

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IPC IPC(8): E01C11/00E02D27/12E01C3/00E01C11/16E02D15/04
CPCE01C3/00E01C11/005E01C11/16E02D15/04E02D27/12
Inventor 和兆建牟开李青姚剑张旋
Owner 山西省交通新技术发展有限公司
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