国内外发生的大量隧道火灾案例都显示了火灾对衬砌结构的严重损害以及衬砌结构耐火的重要性。依托青岛胶州湾隧道，详细介绍采用数值模拟对隧道衬砌结构火灾高温时的瞬态温度场的模拟过程，研究在火灾高温时温度沿隧道衬砌厚度的分布规律，给出一系列研究成果，对确定隧道衬砌的耐火性能、提高隧道衬砌的火灾安全性有重要意义。

Numerous tunnel fires occurring in China and foreign countries demonstrate that fires can severely destroy the lining structure and that the fireresistant performance of the lining is of great importance. With Jiaozhou Bay tunnel in Qingdao, China as an example, the numerical simulation of the temperature field of the tunnel lining under high temperature in case of fire is presented, the rule of the temperature distribution along the lining thickness under high temperature in case of fire is studied and a series of study results are achieved, which has great significance to determine the fireresistant performance of the tunnel lining and to improve the fireresistant safety of the tunnel lining.