地铁区间道床脱空数值模拟及评价标准研究

随着城市社会经济快速发展,越来越多的城市正在建设或计划建设大量的地铁来满足日益增长的交通需求.道床作为地铁土建结构的重要组成部分,其状态变化对行车安全有很大影响.文章运用数值模拟方法,对某地铁区间道床存在空洞或脱空时结构受力及变形进行探讨,并在此基础上开展道床存在空洞或脱空时的评价标准研究.

Study on Numerical Simulation and Evaluation Standard of Ballast Disengaging for Metro Sections

As rapid development of city＇ s economic, traffic pressure is becoming much bigger, more and more cities are building or planning to build a large number of subways to alleviate the increasing traffic demand. As an important part of the subway construction structures, state changes of ballast have a large impact on driving safety. This paper researches ballast structure deformation and evaluation standard when cavity and disengaging exist in metro sections by using numericai simulation method.