Seismic stability of reinforced soil walls under bearing capacity failure by pseudo-dynamic method
Seismic stability of reinforced soil walls under bearing capacity failure by pseudo-dynamic method
复制标题
拟动力法承载力破坏下加筋土墙的地震稳定性
DOI：
10.1007/s11771-013-1773-7
复制
发表时间：
2013
影响因子：
4.4
通讯作者：
Shu
中科院分区：
文献类型：
--
作者：
X. Ruan;Shu
为了评价加筋土墙抗承载力破坏的地震稳定性，采用拟动力法确定了加筋土墙的地震安全系数，并考虑水平和竖向地震加速度系数、加筋长度与墙高之比、回填土摩擦角、地基土摩擦角、土-加筋界面摩擦角和堆载等不同参数进行计算。参数研究表明，当地基土摩擦角在25°～45°变化时，地震安全系数提高24倍；当土-加筋界面摩擦角在0～30°变化时，地震安全系数提高2倍。也就是说，地基土和/或土-加筋界面摩擦角的值越大，加筋土墙在抗震设计中就越安全。并将结果与伪静态方法获得的结果进行了比较。通过目前的工作发现，安全系数值较高。
In order to evaluate the seismic stability of reinforced soil walls against bearing capacity failure, the seismic safety factor of reinforced soil walls was determined by using pseudo-dynamic method, and calculated by considering different parameters, such as horizontal and vertical seismic acceleration coefficients, ratio of reinforcement length to wall height, back fill friction angle, foundation soil friction angle, soil-reinforcement interface friction angle and surcharge. The parametric study shows that the seismic safety factor increases by 24-fold when the foundation soil friction angle varies from 25° to 45°, and increases by 2-fold when the soil-reinforcement interface friction angle varies from 0 to 30°. That is to say, the bigger values the foundation soil and/or soil-reinforcement interface friction angles have, the safer the reinforced soil walls become in the seismic design. The results were also compared with those obtained from pseudo-static method. It is found that there is a higher value of the safety factor by the present work.