Unidirectional four-lane highway tunnel assembled excavation and steel arch installation trolley

Abstract

The invention relates to the traffic fields such as a highway tunnel and an underground engineering technology, and relates to a unidirectional four-lane highway tunnel assembled excavation and steelarch installation trolley. The unidirectional four-lane highway tunnel assembled excavation and steel arch installation trolley has three working surfaces arranged up and down: a third working surface, a second working surface and a first working surface; the first working surface has two first working surface top fixed panels supported on the floor of the tunnel; the top panels of the third working surface are two pieces arranged symmetrically left and right; the left and right first working surface top fixed panels are independently arranged, which are cooperated with the corresponding second working surface and third working surface together to form a separate steel arch installation trolley; and the left and right first working surface top fixed panels are integrally connected throughtwo first working surface top movable panels. The unidirectional four-lane highway tunnel assembled excavation and steel arch installation trolley solves the problem that the excavation and steel archinstallation trolley change are difficult during the construction conversion process of the step normal CD method, and the difficulty of installing the steel arch frame is reduced.

Description

technical field [0001] The invention relates to traffic fields such as road tunnels and underground engineering technology, and in particular to a trolley capable of assembling and excavating a one-way four-lane road tunnel and installing a steel arch frame. Background technique [0002] With the gradual improvement of my country's economic development level, the per capita car ownership of the nationals continues to increase, resulting in a continuous increase in the traffic volume of expressways. The existing one-way two-lane and three-lane expressways are gradually unable to meet the current traffic demand, so a large number of one-way four-lane expressways need to be built. However, my country is a mountainous country, and the construction of one-way four-lane expressways will inevitably bring about an increasing number of one-way four-lane ultra-large-span highway tunnel projects. Since the excavation span of the ultra-long-span highway tunnel is more than 18 meters, t...

AI Technical Summary

Problems solved by technology

This paper proposes a one-way four-lane tunnel assembleable excavation and steel arch installation trolley for the problems of troublesome conversion of excavation trolleys and influence on construction progress during tunnel construction.

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