火灾下隧道衬砌结构力学行为的热力耦合分析

Numerical analysis of thermal coupling in the Mechanical Behabiors of Tunnel lining Structure under Fire

结合某水下隧道实例,采用大型三维有限元分析软件建立了二维热力耦合分析模型,得到了隧道衬砌结构在火荷载高温下的温度场、内力分布及变形情况,为隧道结构的防火设计及灾后损伤修复和加固提供了参考。

Using a largescale finite element analysis software to build a two-dimensional coupled thermo-mechanical analysis model according to an underwater tunnel instance and get the temperature field, the internal rorce distribution and deformation of the tunnel lining structure under High temperature thermal load which Provides a referenee for fire safety design of the tunnel structure and post - disaster damage repair and reinforcement.