【摘要】 以拟静力法为基础,通过地震力偏角的旋转,结合极限平衡条件,推导出地震作用下浅埋偏压隧道围岩压力的解析解,并探讨了其影响因素.研究发现地震侧压力系数受岩土体力学指标的影响明显.在地震力作用下,竖向地震加速度系数使拱顶总垂直压力值减少,多数情况下会降低地震侧压力系数;水平向地震加速度系数对总垂直地震压力和地震侧压力系数的影响规律取决于水平地震力的方向.浅埋侧的地震侧压力系数随着地面倾角的增大而减小,而深埋侧的地震侧压力系数随着地面倾角的增大而增大.更多还原

【Abstract】 Based on the pseudo-static method,an analytical solution of rock pressure for shallow-buried unsymmetrical loading tunnels under earthquake loading was derived by rotating the deflection angles of earthquake force and combining the limit equilibrium condition,with discussion on the influencing factors of rock pressure.It is found that the mechanical indexes of rock soil mass have an obvious influence on the lateral pressure coeffcient.Under earthquake loading,the vertical earthquake acceleration coeffcient always decreases the total vertical pressure on the vault and lowers the lateral pressure coeffcient in most cases.The impact of horizontal earthquake acceleration coeffcient on the total vertical pressure on the vault and the lateral pressure coeffcient depends on the direction of horizontal earthquake force.The lateral pressure coeffcient of the shallow-buried side always decreases with increasing ground inclination,but the lateral pressure coeffcient of the deep-buried side increases.更多还原