【摘要】 用块体理论分析方法中的矢量分析方法计算块体动安全系数,具体的研究思路是:首先输入构成不定位块体所需的结构面和临空面信息,然后根据有限性定理和可动性定理判断块体的有限性和可动性,在块体可动的基础上,再找出块体在自重和地震荷载共同作用下的滑动模式(脱离、单面滑动或双面滑动),并求出块体在该滑动模式下的安全系数,通过循环所有的地震时刻,得到了动安全系数时程曲线。考虑到不同区间安全系数的权值,提出了一种新的动安全系数评价方法,对动安全系数的评价指标做了探索工作。更多还原

【Abstract】 Considering the weight value of safety factors in different intervals,a new evaluation method for dynamic safety factor is proposed.Vector analysis method of the block theory is adopted for programming.The detailed research approach is presented as follows: first of all,the required information of structural planes and free face is input to form the unlocated block,and the finiteness and mobility of the block are determined subsequently according to finiteness theorem and mobility theorem.If the block is movable,find out the sliding mode(separating,single face sliding or double face sliding) of the block under the combined action of dead weight and seismic load as well as the safety factor under that sliding mode.Finally the time-history curve of dynamic safety factor is obtained by cycling all the earthquake times.This study can be regarded as an exploration in the evaluation index of dynamic safety factor.更多还原