汶川地震对加筋土挡墙的影响分析  

The Influence Analysis of Wenchuan Earthquake on Reinforced Earth Retaining Wall

作　　者：周波[1] 范洪海[1,2] 

机构地区：[1]中铁西南科学研究院有限公司,成都610031 [2]西南交通大学土木工程学院,成都610031

出　　处：《路基工程》2011年第3期83-85,89,共4页Subgrade Engineering

摘　　要：阐述了加筋土挡墙的结构和作用机理,利用有限元软件PLAXIS,结合震区公路调查资料,分析加筋土挡墙的受力变形状态。结果表明:在汶川地震作用下,加筋土挡墙下部应力最大,而上部位移最大。设计、施工中,对地震频发区的加筋土挡墙,可适当提高其顶部与底部的强度,或将加筋土挡墙的竖直墙面,改为略朝内倾的墙面,来减小地震对挡墙结构的影响。The structure and mechanism of reinforced earth retaining wall are described in this paper.Then the deformation state of reinforced earth retaining wall is analyzed using finite element software PLAXIS combined with the survey data of highways in the affected area.The results show that the lower part of the reinforced earth retaining wall has the maximum stress and the upper part of the reinforced earth retaining wall has the maximum replacement under Wenchuan Earthquake.Therefore,in the future design and construction,the strength of the top and bottom of reinforced earth retaining wall can be improved properly,or the vertical gradient of the reinforced earth wall can be reduced in a reasonable way to reduce the impact of earthquakes on the wall.

关 键 词：地震 有限元 加筋土挡墙 

分 类 号：U417.115[交通运输工程—道路与铁道工程]