基于QUAKE/W的顺层岩质边坡动力响应特征及稳定性分析

选取哈大线DK50+ 900-DK51+ 500处的岩质边坡为分析对象,结合工程地质资料,运用QUAKE/W和SLOPE/W模块耦合建立数值模型,计算其在动力作用下特定监测点的位移与加速度并分析其响应特性.在上述分析的基础上进一步耦合计算岩质边坡在地震作用下安全系数随时间变化的规律,并得到其整个过程的稳定性,将结果同拟静力法进行比较.结果表明地震作用下边坡位移和加速度最大值均出现在边坡中上部,稳定性总体显著降低,局部时段存在安全系数增高现象,与实际相符合.

Dynamic Response Characteristics and Stability Analysis of Bedding Rock Slope under Earthquake Based on QUAKE/W

Bedding rock slope is one of the most common types of slope that can easily be overall instability especially under earthquake.Took Harbin-Dalian line DK50 + 900 ～ DK51 + 900 rock Slope as the analysis object,combined with the engineering geological data,this paper adopted the QUAKE/W and SLOPE/W module and set up a numerical model to calculate the specific monitoring stations under dynamic action and analyzes the displacement and acceleration response.Based on the calculation results the rule of safety factor changing with time under seismic action was acquired and the stability of the whole process was compared with the results with pseudo-static method.The results show that the maximum displacement and acceleration are in the upper slope under the seismic action,and the stability decreased significantly,but the safety factor may increase in some time in the whole process which consistent with the actual situation.