岩土力学Issue(z2)：62-66,73,6.
地震动作用下均匀土质边坡的临界转角分析
Analysis of critical rotation angle of homogeneous soil slopes instability aroused by seismic action
摘要
Abstract
The global rotation angle of a homogeneous soil slope induced by seism is well harmonize with the arc-sliding behavior of slope failure and so is a more superior parameter of deformation and stability than the permanent sliding displacement. And the strain energy because of transient seismic deformations is reversible and equivalent to the random fluctuation to a slope system, and critical rotation angle is an inherent property of slopes and independent of the seismic oscillation. Substantially, the critical rotation angle is in essence corresponds to the catastrophe point of the system potential energy. A cusp catastrophe model is set up based on the characters of seismic instability of homogeneous soil slope;and a method for determining the critical rotation angle of arc-sliding is proposed; and it is found that the critical rotation angle is only related to the constitutive model parameter m and u0 of the constitutive model of soil in slide belt and the radius R of the arc slide belt and in essence represents the effect of many factors and deserving wide application.关键词
边坡工程/地震动/均匀土质边坡/临界转角/突变Key words
slope engineering/seism/homogeneous soil slope/critical rotation angle/catastrophe分类
天文与地球科学引用本文复制引用
钱海涛,张力方,秦四清,王思敬..地震动作用下均匀土质边坡的临界转角分析[J].岩土力学,2013,(z2):62-66,73,6.基金项目
中国地震局地壳应力研究所中央级公益性科研院所基本科研业务专项(No.ZDJ2012-17)；国家自然科学基金青年基金（No.41202218）。 （No.ZDJ2012-17）
