摘要
为弥补对边坡稳定性研究以静力学极限平衡法为主的缺陷,首先以弹性波动理论为基础,建立边坡不同区域所对应的波函数,然后利用公共边界上的连续条件建立方程组,最后通过动力学方法求解,得到了地震波以不同波数、入射角入射条件下的边坡响应情况,从而进一步评价了地震动力荷载对边坡的稳定性影响。研究结果显示地震波波数、入射角等都会对边坡响应产生不同的影响:波数较小时,地表位移呈准静态特性;随着波数增加,边坡上的位移呈现明显的动态特性,并且变化越来越剧烈;入射波垂直入射时,地表位移幅值始终出现在边坡坡顶处,入射波水平入射时,地表位移幅值出现在边坡迎向地震波的坡脚处。研究结果可为解决边坡动力问题提供参考依据。
Aiming at the shortcomings of statics limit equilibrium method in the study of slope stability,it establishes the wave functions corresponding to different regions of the slope based on the elastic wave theory,and uses the continuous conditions on the common boundary to build the equations,obtains the seismic wave at different wave number,incident response under the condition of slope angle of incidence,further evaluation of seismic dynamic load effect on the stability of the slope.The results provide some reference for solving the problem of slope dynamic meaning.
作者
马英泰
Ma Yingtai(Department of Architectural Engineering,Qinghai Institute of Architecture and Technology,Qinghai Xining,810012,China)
出处
《机械设计与制造工程》
2020年第1期105-109,共5页
Machine Design and Manufacturing Engineering
关键词
地震动荷载
波动理论
边坡稳定性
seismic dynamic loads
wave theory
slope stability
