Installing method for long, large and light-weight heavy-load rail-crossing trestle in tunnel inverted arch construction

An installation method and technology for rail trestle bridges, which are applied in the directions of bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of complex installation methods, and achieve the effects of reducing construction risks, easy installation, and ensuring construction safety steps.

Inactive Publication Date: 2014-03-26
中铁隧道集团二处有限公司
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  • Installing method for long, large and light-weight heavy-load rail-crossing trestle in tunnel inverted arch construction
  • Installing method for long, large and light-weight heavy-load rail-crossing trestle in tunnel inverted arch construction
  • Installing method for long, large and light-weight heavy-load rail-crossing trestle in tunnel inverted arch construction

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[0026] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. Such as Figure 1-3 As shown, figure 1 It is a working schematic diagram of the tunnel invert full-length construction invert trestle in the prior art, figure 2 , image 3 with Figure 4 It is the structure diagram of the trestle bridge and the construction flow chart of the installation method in the installation method of the present invention.

[0027] The long, light and heavy-duty rail-crossing trestle bridge for tunnel invert construction according to the present invention mainly adopts a combined structure of longitudinal main load-bearing section steel 2, longitudinal driving platform 3 and transverse support section steel 4.

[0028] The anti-slip steel bar 1 is made of Φ20 threaded steel bar cutting to ensure its durability, the longitudinal main force-bearing section steel 2 is made of I63b section steel, and the longitudinal ...

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Abstract

The invention relates to an installing method for a long, large and light-weight heavy-load rail-crossing trestle in tunnel inverted arch construction. The installing method includes the steps that the longitudinal length for excavating an inverted arch and the placement position of the trestle are determined; bottom plate void ballast at the two ends of the trestle is rolled and tamped, so that the trestle is prevented from unevenly settling or deflecting in the using process; the rail-crossing trestle is moved to a designated position through two loaders and a steel wire rope; inverted arch construction is performed. The long, large and light-weight heavy-load rail-crossing trestle is not prone to deformation, safe, reliable and easy to install, working efficiency is improved, cost is effectively controlled, meanwhile, the construction progress of the inverted arch is greatly improved, the construction safety step is ensured, and risks of tunnel construction are reduced.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction equipment, in particular to a method for installing long, light and heavy-duty rail trestles for tunnel inverted arch construction. Background technique [0002] In recent years, with the development of China's economic construction and the continuous acceleration of the urbanization process, the demand for infrastructure, especially the construction of transportation facilities, has been increasing, and a large number of tunnel projects have appeared, and the scale has become larger and larger. [0003] The inverted arch is one of the main components of the tunnel structure, and it is the foundation of the tunnel structure. On the one hand, it is necessary to effectively transmit the ground pressure in the upper part of the tunnel through the tunnel side wall structure or the load on the road surface to the underground, and it also effectively resists the reaction force fr...

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Application Information

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IPC IPC(8): E01D21/00
Inventor 刘争刚乐晟杨春勃陈军梁文雨李培国段杰玉胡景军李志军杨艳玲赵康林王光伟
Owner 中铁隧道集团二处有限公司
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