层状非均质土坡抗震稳定性的变分解法  

VARIATIONAL PROCEDURE FOR ASEISMIC STABILITY OF LAYERED SOIL SLOPES

作　　者：栾茂田[1] 金崇磐[1] 林皋[1] 赵颖 

机构地区：[1]大连理工大学 [2]辽宁省水利科学研究所

出　　处：《地震工程与工程振动》1993年第4期73-80,共8页Earthquake Engineering and Engineering Dynamics

摘　　要：本文根据塑性极限平衡原理,在作者原有工作的基础上,进一步考虑土坡剖面及土料特性的层状分布与地震荷载沿坡高的非均匀变化等特征,运用变分法将层状土坡的稳定性计算简化成为带有层间约束条件的某一泛函变分驻值问题,进而求解与其相对应的边值方程,确定了地震条件下非均质土坡的临界破坏机制及其屈服加速度系数。最后结合具体数值计算结果分析了土料非均质性等因素对土坡极限抗震性能的影响。Based on the limit equilibrium principle, an effective method for estimating the limit earthquake-resistant capacity by the variational technique is developed for layered soil slopes. In this approach, inhomogeneity of soil property and non-uniformly distributed seismic loading along depth are taken into consideration. Numerical results for typical cases are presented in order to examine the effects of soil strength and seismic loads on slope stability.

关 键 词：土坡 抗震 稳定性 变分解法 

分 类 号：TU457[建筑科学—岩土工程]