岩溶地带公路隧道地震动力响应研究

Study on Dynamic Response of Highway Tunnel in Karst Areas under Earthquake

基于土—结构相互作用模型,利用粘—弹性边界条件,运用时程分析方法研究了岩溶地带公路隧道地震动力响应。探讨了溶洞发育程度和位置对隧道地震动力响应的影响,总结了岩溶地区公路隧道结构位移场、围岩塑性区等的地震动力响应分布规律。

Based on the soil -structure interaction model and with the viscoelastic boundary conditions, the time - history analysis method is adopted to carry out the study. The influence of the development and location of the karst cave to dynamic response of tunnel under earthquake is discussed, and the distributed rules of dynamic response under earthquake are concluded, such as replacement of highway tunnel structure, the plastic zone in surrounding rock in the karst areas and etc.