公路隧道二次衬砌受力特征研究现状综述

A Summary of the Research on the stress Characteristics of the Two lining of the Highway Tunnel

隧道是埋置于地层内的工程建筑物,是人类利用地下空间的一种形式。在公路建设中,往往需要缩短线路、争取高程,因此公路隧道工程建设起着越来越重要的作用。在公路隧道建设中,围岩稳定性和支护结构合理设计问题是隧道工程两大核心问题,为了保证隧道开挖过程中及其长期运营安全,须保证隧道围岩不产生塌方、变形等,保证围岩及支护结构的长期稳定。为此,二次衬砌结构的内力和变形特征的研究将对公路隧道的稳定性起着至关重要的作用。本文通过对已有的国内外参考资料的总结和整理,从现场试验、室内模拟试验、理论分析及数值模拟等方面对公路隧道二次衬砌受力特征的研究现状进行分析研究。

The tunnel is an engineering building buried in the stratum,and it is a form of human use of the underground space.In highway construction,it is often necessary to shorten the line and strive for height,so the construction of highway tunnel project is playing a more and more important role.In the construction of highway tunnel,the stability of surrounding rock and supporting structure is reasonable design of two core problems of tunnel engineering,in order to ensure the process of tunnel excavation and its long-term operation safety,to ensure that no deformation of tunnel surrounding rock collapse,etc.,to ensure the surrounding rock and the supporting structure of the long-term stability.Therefore,the study of the internal force and deformation characteristics of the two lining structure will play a vital role in the stability of the highway tunnel.Based on the summarization and sorting out of the references at home and abroad,the research status of the two lining characteristics of highway tunnel is analyzed from field test,indoor simulation test,theoretical analysis and numerical simulation.