Combined emergency bridge and erection method thereof

Abstract

The invention puts forward a combined emergency bridge and an erection method thereof which are designed for solving the problems that in the prior art, the quick restoration on the traffics at the gap positions of highway subgrades and the derogative areas of subgrades is realized by way of building shortcuts, therefore, the restoration is restricted by terrain conditions and affected by secondary geological disasters, meanwhile, the restoration is long in time, time-consuming, labor-consuming and the like. The combined emergency bridge comprises cubic steel frames, triangular prism-shaped steel frames, bearing wire cables, fixing wire cables and road slabs. The combined emergency bridge and the erection method thereof have the following beneficial effects: the bearing wire cables and combined steel frames of the bridge constitute a statically indeterminate self-bearing structure system, horizontal pressures produced by the steel frames are transmitted to the ends of the bridge, and the loads of the triangular prism-shaped steel frames are balanced by the tension of the bearing wire cables; the steel frames of the combined emergency bridge provided by the invention can not be fabricated on site, and the fabrication of the steel frames can be standardized and serialized; and the erection method of the combined emergency bridge is simple without carrying out excessive treatments on disaster sites, therefore, the method has the characteristics of emergency, speediness and convenience.

Description

[0001] technical field [0002] The invention relates to a combined bridge for rapid recovery of road traffic and an erection method thereof, in particular to a combined emergency bridge for rapid recovery of traffic at roadbed gaps or damaged sections of roadbeds in mountainous areas and an erection method thereof. Background technique [0003] my country is a mountainous country. More than two-thirds of the total land area is mountainous and hilly. The mileage of roads in mountainous areas exceeds 300,000 kilometers. Floods and mudslides along the roads are serious. The embankment of rivers and roads is lost due to impact and debris flow damages road bridges and culverts. Preliminary statistics show that there are more than 8,000 subgrade gaps in my country's mountainous highways every year, affecting about 150,000 hours of road traffic detention time, indirect economic losses of more than 1.2 billion yuan, and project restoration investment costs of more than 500 million y...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of long repair time, time-consuming and labor-intensive problems such as the limitation of terrain conditions and the influence of secondary geological disasters in the rapid restoration of roadbed gaps and damaged roadbeds in the existing technology by means of repairing roads, this paper Invention proposes a combined emergency bridge and its erection method

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