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Tunnel base and a construction method thereof

A tunnel and base technology, applied to roads, tracks, ballast layers, etc., can solve problems such as low construction efficiency, long construction period, and impact on the bearing capacity of the tunnel base

Pending Publication Date: 2019-01-25
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of tunnel disease control, the existing tunnel foundation replacement and invert replacement have a long construction period and low construction efficiency
In addition, the interference to the surrounding rock of the tunnel is serious, which not only seriously affects the bearing capacity of the treated tunnel base, but also has poor construction safety, and the construction and maintenance costs of the tunnel base are high

Method used

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  • Tunnel base and a construction method thereof
  • Tunnel base and a construction method thereof
  • Tunnel base and a construction method thereof

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] It should be noted that in this application, the direction of the horizontal line in the cross section of the tunnel base is defined as "transverse", the direction of tunnel extension is defined as "longitudinal", and the direction perpendicular to the horizontal plane is defined as "vertical". . And the directional terms or qualifiers "upper end", "lower end" and other similar terms used in this application are all for the referenced drawings, they are not used to limit the absolute position of the parts involved, but can be Varies on a case-by-case basis.

[0032] figure 1 A schematic diagram of a transverse section of a tunnel substrate 100 according to the invention is shown. Such as figure 1 As shown, the tunnel base 100 is installed at the bottom of the tunnel 200 . According to the invention, the tunnel base 100 is a prefabri...

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Abstract

The invention provides a tunnel base. The tunnel base comprises: an inverted arch bottom layer arranged at the bottom of the tunnel; the inverted arch bottom layer comprises two first inverted arch prefabricated blocks arranged in a mirror image at the bottom of the tunnel; and a second inverted arch prefabricated block assembled between the two first inverted arch prefabricated blocks; and a second inverted arch prefabricated block assembled between the first inverted arch prefabricated blocks. A prefabricated filling layer installed on the upper part of the inverted arch bottom layer, wherein the prefabricated filling layer comprises two F-shaped prefabricated blocks respectively connected with the bottom of the arch walls on both sides of the tunnel and arranged in a mirror image; Wherein the prefabricated filling layer is adapted to be installed with the inverted arch bottom layer, and the inverted arch bottom layer and the prefabricated filling layer are continuously arranged along the longitudinal direction of the tunnel bottom to form a tunnel base.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction, in particular to a tunnel base. The invention also relates to a construction method of the tunnel base. Background technique [0002] In recent years, with the development of my country's railway transportation, railway tunnel construction projects have become more and more important, and more and more tunnel projects have been put into operation. [0003] Currently, railway tunnel bases are usually cast in concrete. During the operation period, the common diseases of the tunnel base include delamination, cracking, floor heaving, subsidence, mud turning, lining cracking and other diseases. These have seriously affected the safety and normal operation of the tunnel, and reduced the bearing capacity of the lining structure to the surrounding rock. At the same time, the pavement and inverted arches were damaged, resulting in deformation of the road surface, which seriously...

Claims

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Application Information

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IPC IPC(8): E01B1/00
CPCE01B1/00E01B1/002E01B1/008E01B2204/09
Inventor 马伟斌王志伟杜晓燕张斌王子洪余东洋付兵先马超锋邹文浩李尧安哲立郭小雄赵鹏常凯
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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