基于降雨-地震耦合作用土质边坡稳定性研究

采用数值模拟软件Geo-studio、ANSYS和FLAC3D建立了考虑降雨入渗和地震力的三维计算模型,研究了基于降雨—地震耦合作用的土质边坡稳定性。研究结果表明:1)边坡安全系数随水位线的上升而下降;2)相比降雨工况,降雨—地震耦合作用下的边坡稳定性较差;3)在水平和竖直方向上,坡脚产生的位移大于坡顶的位移,位移增加的速率大于坡顶。

STUDY ON STABILITY OF SOIL SLOPE BASED ON RAINFALL-SEISMIC COUPLING

A three-dimensional computational model of rain infiltration and seismic force was established using numerical simulation software Geo-studio, ANSYS and FLAC3D, and soil slope stability based on rainfall-seismic coupling was studied. The results show that: (1) the slope safety factor decreases with the rise of the water level. (2) Compared with rainfall conditions, the slope stability of the slope used in rainfall-seismic coupling cooperation is poor. (3) The horizontal displacement of the foot of the slope is greater than the horizontal displacement of the top of the slope, and the rate of increase is greater than the slope top. (4) The level and vertical displacement produced by the slope foot is generally larger than the top of the slope, the displacement of the top and foot of the slope is relatively large, and the safety factor of the slope is smaller.