影响加筋土挡墙地震稳定性的参数分析  

Analysis of parameter influence on seismic stability of reinforced soil walls

作　　者：王恩喜[1] 孙树林[1,2] 陈怿旸 刘俊[1] 刘博[1] 李方 

机构地区：[1]河海大学地球科学与工程学院,江苏南京211100 [2]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [3]江苏省南京工程高等职业学校,江苏南京211135

出　　处：《河北工程大学学报（自然科学版）》2016年第3期24-28,共5页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家重点实验室开放研究基金资助项目(2005408911);留学回国人员科研基金资助项目(20071108);江苏省环境保护厅项目(201029)

摘　　要：针对现有挡土墙抗震设计影响因素考虑不足等问题,运用拟静力法和水平条分法分析加筋土挡墙的地震稳定性,并研究土体内摩擦角、水平地震力加速度系数、填土粘聚力、挡土墙倾角和滑动体上部荷载等参数对地震稳定性的影响。结果表明:加筋土挡墙的地震稳定性与水平地震力加速度系数和滑动体上部荷载有显著关系,且变化趋势与之成正比;与土体内摩擦角和填土粘聚力的变化趋势成反比;当条件相同时,倾斜加筋土挡墙的地震稳定性比竖直挡墙的稳定性好。Aiming at the shortages of seismic design factors for retaining wall,the combination of pesudo- static and horizontal slice methods were used to analyze the seismic stability of reinforced soil walls,and the effect of various parameters including angle of internal friction,horizontal seismic loading,cohesion of the backfill,surcharge loading and inllination angle were examined. The results show that： The stability of a reinforced soil wall increases with the increase of horizontal seismic loading and surcharge loading,while it decreases with the increase of angle of internal friction and cohesion of the backfill. Under the same conditions,the inclined wall is more stable than the vertical wall.

关 键 词：加筋土挡墙 稳定性 参数 拟静力法 水平条分法 

分 类 号：TU476[建筑科学—结构工程]