【摘要】 在采集和分析地铁震害类型的基础上 ,考虑了地震荷载作用下区间隧道的受力特点及软土和结构材料的动力特性 ,对软土地层中的地铁区间隧道的抗震设计方法进行了研究。内容包括 :地铁区间隧道断面的地震响应计算 ,等代地震荷载的确定原则 ,以及在 2 %、1 0 %和 63 2 %三种概率水准 ,上海市区典型区间隧道断面的等代地震荷载及其修正系数的确定等。有关成果对地铁区间隧道简化抗震设计方法的建立有参考价值更多还原

【Abstract】 This paper deals with the calculation method for the design of subway tunnel in soft clay. Based on the typical section and geological condition of the subway tunnel in Shanghai, the earthquake responses for the 3 probability levels (2%, 10% and 63.2%) were calculated. After comparing the results with those from assumed earthquake load distribution, a criterion to determine the equivalent earthquake load distribution was put forward and a coefficient was suggested to revise the value of inner force, so that they can well coincide each other. It is helpful to establish a calculation method for the design of subway tunnel with simplified calculation process.更多还原