地震荷载作用下绵茂公路高边坡动力响应及稳定性  

Dynamic Response and Stability of High Slope in Mian-mao Highway under the Condition of Seismic

作　　者：张大琦[1] 

机构地区：[1]江苏省交通科学研究院有限公司,南京211112

出　　处：《土工基础》2011年第4期17-20,共4页Soil Engineering and Foundation

摘　　要：结合在建的四川绵茂公路高边坡,采用有限元—无限元耦合动力分析法,以512汶川波为地震荷载输入,研究了由不同岩土体材料组成的公路高边坡在地震荷载作用下的动应力、动位移及加速度响应特征,同时利用强度折减法分析了边坡在极限稳定状态下应力及应变分布状况,确定了边坡在地震力作用下的潜在不稳定区域。为绵茂公路及类似工程的边坡的治理措施提供参考。The dynamic characteristics of high slopes such as dynamic stresses, dynamic displacements and acceleration due to seismic loads are investigated by employing the dynamic FEM-UEM coupling numerical analysis. These slopes comprised of dif- ferent rock or soil mediums of Mian-mao highway in Sichuan. The distribution of stresses and strains in the limit stability con- dition is obtained by using the strength reduction method, and the potential instability region of slope subjected to seismic loads is determined, which is as the reference for slope treatment of Mian-mao highway and other similar engineerings.

关 键 词：地震荷载 高边坡 动力响应 稳定性 有限元—无限元耦合动力分析 

分 类 号：TU435[建筑科学—岩土工程]