摘要
反应位移法作为一种较合适的地下结构拟静力抗震分析方法,其等效动荷载的确定对地下结构抗震结果的影响较大。借助一维土层地震反应分析,获得土体在地震动荷载作用下的动力反应,从而取得地下结构顶底标高处产生最大相对变形时刻的荷载参数,并以此作为确定反应位移法等效动荷载的依据。结合上海轨道交通圆形区间隧道工程实例,阐述了具体抗震分析过程,可为地下交通隧道结构的抗震设计提供借鉴。
Response displacement method is a suitable method for pseudo-static seismic analysis, but its equivalent dynamic load has a greater impact on the seismic analysis results of structure. The dynamic response of soil under seismic ware loads is acquired by one-dimensional soil seismic response analysis. At the same time, the seismic response of the moment of the maximum relative deformation at the top and bottom of structure is determined. It is used to calculate the equivalent dynamic load of response displacement method. Combined with a project case of subway tunnel, its calculation process is described in detail. It can provide a guidance for the seismic design of underground traffic tunnel.
出处
《地下工程与隧道》
2016年第3期7-10,共4页
Underground Engineering and Tunnels
