摘要
利用滑动楔体极限平衡理论,考虑地震加速度的放大效应,对于地震作用下挡土墙的被动土压力进行了拟动力分析,得到了地震作用下被动土压力的计算公式,并分析了填土表面坡脚、土体内摩擦角、挡土墙与填土界面摩擦角对于地震土压力系数以及破裂角大小的影响。结果表明,地震土压力系数与破裂角大小随着表面坡脚、填土内摩擦角以及挡土墙与填土界面摩擦角的变化呈一种非线性的变化情况。
Based on conventional sliding wedge limit equilibrium theory and the earthquake acceleration-Amplification effect,using pseudo-dynamic analysis of seismic passive earth pressure on retaining wall, acalculation formula of seismic passive earth pressure is obtained,analyzed the effect of angle of rupture andthe coefficient of earth pressure under the action of slope toe of filled soil surface, internal friction angle, re-taining wall and filling interface friction angle. The results showed that with the change of surface toe, in-ternal friction angle,the friction angle of retaining wall and filling interface friction angle, the coefficient ofearth pressure showing a nonlinear change.
出处
《甘肃科学学报》
2015年第4期78-82,共5页
Journal of Gansu Sciences
基金
国家自然科学基金资助项目(50978129)
甘肃省自科学然基金(1014RJZA016)
关键词
拟动力分析
刚性挡土墙
地震被动土压力
地震系数
Pseudo-dynamic analysis
Rigid retaining wall
Seismic passive earth pressure
Seismic coeffi-cient
