作　　者： ; ; ; ; ;

机构地区： 中山大学工学院应用力学与工程系

出　　处： 《岩土力学》 2005年第4期558-561,共4页

摘　　要： 将强度折减理论应用于土质边坡稳定及加固的弹塑性有限元分析中,提出了以某一幅值的总等效塑性应变区,从坡脚到坡顶贯通时为边坡破坏的标准,不但物理意义很明确,而且可以根据边坡临界破坏时的等效塑性应变区确定滑动面位置,并认为此前的折减系数即为边坡的安全系数。对某供水改造工程中边坡的稳定性分析及加固计算表明:该破坏判别标准是适宜的,能够在工程实际中加以运用。 An elastoplastic strength reduction FEM is utilized in the analysis of slope stability and reinforcing; and the authors present a well-defined total equivalent plastic strain (TEPS) zone as the failure criterion when it running through the bottom to the top of a slope by the strength reduction FEM method. So, the conception of failure of a slope is clear. At the same time, the strength reduction coefficient before the TEPS zone is considered as the safety factor of a slope; thus, the sliding surface must be located at the zone of TEPS. The results of stability analysis and the reinforcing calculation of a certain slope in a certain water supply reconstruction project show that the TEPS zone as a failure criterion of strength reduction FEM is reasonable and can be widely applied to slope engineering practice.

关 键 词： 边坡 强度折减法 弹塑性有限元 稳定性系数 加固分析

领　　域： [建筑科学] [建筑科学] [天文地球] [天文地球] [天文地球]