论文部分内容阅读
针对在强度折减动力分析法中折减系数与关键点位移关系曲线拐点不易判断的问题,采用强度折减法将边坡岩土体的内聚力、内摩擦角、抗拉强度折减后,利用数值分析软件进行静动力计算,以边坡潜在滑动体关键点位移时程曲线和折减系数与关键点位移关系曲线判断出折减系数的范围,通过分析绘制在同一坐标系下不同折减系数时潜在滑动体关键点位移时程曲线的变化趋势,较为准确地确定拐点及其相应的稳定安全系数,并以浩口水电站厂房后缘边坡为例,通过对其进行动力稳定性分析,验证了所提方法的可行性和合理性。
Aiming at the problem that the inflexion point of the curve between the reduction coefficient and the displacement of the key point in the dynamic analysis of strength reduction method is not easy to judge, the strength reduction method is adopted to reduce the cohesion, internal friction angle and tensile strength of the slope rock mass, The analysis software carries out the static and dynamic calculation, and deduces the range of the reduction coefficient by the displacement curve of the key point displacement of the potential sliding body of the slope and the relationship between the reduction coefficient and the key point displacement. By analyzing and plotting the different reduction coefficient under the same coordinate system The change trend of the potential displacement time history curve of the key sliding point of the potential sliding body is obtained, and the inflection point and its corresponding stability safety factor are determined more accurately. Taking the slope of the rear edge of the Haokou Hydropower Station as an example, dynamic stability analysis of the slope The proposed method is feasible and reasonable.