高速脱轨列车作用下铁路客站结构反应分析

Reactions of railway-station under the impact of derailed high-speed train

由于我国大型高铁客站采用列车站房结构内过站方式,过站设计时速高达200km/h以上,列车高速通过时如若发生站内脱轨撞击主体结构,可能引发站房结构连续倒塌甚至整体倒塌。结合高铁客站结构特点,研究了撞击损毁子结构重要性系数及分布特点,指出高架候车区的薄弱区域为结构边角部位,并采用连续倒塌动力分析方法,研究了列车脱轨撞击损毁站房薄弱区域时结构的动力效应,提出了站房抗列车冲击的结构优化布置原则。

As inter-station passing is used in most of newly built high-speed railway station of China,and the design though speed is about 250km/h,so if derailment happens and high-speed train hits the main structure,progressive or even completely collapse will occur.The investigation was performed to analyze the structure characteristics of the station,research the importance coefficient of damage sub-structure and its distribution.Then dynamic-progressive-collapse method was adopted to analyze the dynamic effect.The results show that the weak area is the corner parts of the structure,and failure time of the damaged sub-structure elements affect the dynamic effect of the structure.