Research On Mining Influence Of Conventional Bridge Of Highway Coal Segments

In China, coal is plentiful, coal distribution is broad, the subsidence caused by surface coal mining damage is very serious. There is more serious security hidden danger for bridges and other structures. Since the last century fifty’s, our country has carried out the mining test under the railway, highway and bridge and culvert. For decades, we have made certain progress in science and technology, but the mining under the large span, long bridge, and anti deformation have great difficulty at home and abroad, the current general limited to small span, small and medium-sized bridge category.This paper mainly in Nan Wan highway project project, on the influence of mi ning area in different span, different types of bridges are studied. Therefore, this pa per carried out the following work.1) A brief overview of the influence of mining area under the bridge keytechn ology of coal mining and deformation characteristics of bridge and bridge impact as sessment principles of mining;2) To determine the background engineering in mining bridge dynamic influenc e scope and the influence of various typical bridge district with mining influence ana lysis;3) Relying on the theory of finite element analysis, detailed simulation on the background of Engineering in mining influence area bridge analysis with Finite ele ment analysis software Midas/Civil;4) by analyzing the influence of mining area around bridges of various types, proposed in the anti deformation technology, should be flexible device and the bear ing selection and influence of freeway area bridge safety measures technical refe rence and reference value for mining.