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库岸加筋土挡墙在地震和涌浪作用下的稳定性分析
引用本文:孙树林,时冬冬,秦鲜玮,朱明杰,周向向.库岸加筋土挡墙在地震和涌浪作用下的稳定性分析[J].科学技术与工程,2015,15(12).
作者姓名:孙树林  时冬冬  秦鲜玮  朱明杰  周向向
作者单位:1. 河海大学地球科学与工程学院,南京210098;河海大学水文水资源与水利工程科学国家重点实验室,南京210098
2. 河海大学地球科学与工程学院,南京,210098
基金项目:河海大学水文水资源与水利工程科学国家重点实 验室开放研究基金资助项目( 2005408911) ; 留学回国人员科研( 20071108) ; 江
摘    要:为研究不同筋材条件下的库岸加筋土挡墙在地震和涌浪共同作用下的稳定性,采用两种简化破裂面形式,运用拟动力法和水平条分法推导出其所受筋材总拉力与临界破裂角的计算公式。算例分析结果表明,临界破裂角随着竖向地震加速度系数和内摩擦角的增大而增大,随着水平加速度系数的增大而减小;筋材总拉力随着地震加速系数以及上游水位的增大而增大,随着土体内摩擦角、上游水位以及涌浪高度的增大而减小。当条件相同时,可延展性筋材所承受的筋材总拉力大于不可延展性筋材。

关 键 词:加筋土挡墙  地震  涌浪  拟动力法  稳定性
收稿时间:2014/12/23 0:00:00
修稿时间:2014/12/23 0:00:00

Analysis of surge under earthquake effects on the stability of reinforced soil retaining wall
SUN Shu-lin , SHI Dong-dong , QIN Xian-wei , ZHU Ming-jie , ZHOU Xiang-xiang , XIE Fan.Analysis of surge under earthquake effects on the stability of reinforced soil retaining wall[J].Science Technology and Engineering,2015,15(12).
Authors:SUN Shu-lin  SHI Dong-dong  QIN Xian-wei  ZHU Ming-jie  ZHOU Xiang-xiang  XIE Fan
Abstract:In order to study stability of reservoir bank soil retaining wall reinforced with different materials under earthquake and surge,two simplified failure surface are considered. The formula of the total reinforcement tensile and the critical angle of rupture is obtained by the combination of pseudo-dynamic and horizontal slice method. The example analysis results show that the critical rupture angle increases with the vertical seismic acceleration coefficient, whle it decreases with zhe horizontal seismic acceleration coefficientthe.And the total reinforcement tensile force increases with the increase of seismic acceleration coefficient and the upstream water level, while it decreases with the internal friction angle of soil and the upstream water level or the surge height. Furthermore, the total pullout reinforcement tensile for flexible reinforcement material is lager than the total breakage reinforcement tensile for rigid reinforcement material under the same condition.
Keywords:reinforced soil walls  earthquake  surge  pseudo-dynamic method  stability
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