黏性土挡土墙在地震作用下被动土压力研究  

Research of Seismic Passive Earth Pressure on Retaining Wall

作　　者：孙勇[1] 金亚兵 

机构地区：[1]贵州大学喀斯特环境与地质灾害防治教育部重点实验室,贵阳550003 [2]广东省深圳市地质局,广东深圳518023

出　　处：《地下空间与工程学报》2012年第2期311-317,共7页Chinese Journal of Underground Space and Engineering

基　　金：贵州省科学技术基金资助项目(黔科合J字[2010]2245);国家自然科学基金资助项目(51168009)

摘　　要：在非地震主动土压力公式的基础上,用微分薄层法给出了地震条件下被动土压力公式,其中填土面倾斜、墙背倾斜、填土为c～土、墙背与填土间同时存在c～φ作用、墙后破裂体存在水平向和竖向的地震加速度,目前所见的地震情况下和非地震情况下的被动土压力公式均是本文公式的特例。对上述同一条件下的挡墙用过墙锺的整块破裂体作静力平衡分析(如库仑分析)得到的总土压力与本文微分薄层法得到的总土压力,大小相等,但作用点位置本法明显增加,由此理论和很多实验得知,设计抗震和非抗震时的很多类挡墙要引起足够的重视。On the foundation of non-seismic active earth pressure theory,the seismic passive earth pressure formula,in the condition of filling surface incline,wall back incline,filling soil having the characteristic of c and  at the same time,and having the c and  action between the wall back and filling soil,the filling soil having horizontal and vertical acceleration,were obtained with differential layer method,these formula included its distribution and total force.At present time,every passive earth pressure formula in earthquake and non-earthquake condition is the special example of this paper.The total earth pressure obtained with differential layer method and other method such as Coulomb＇s earth wedge equilibrium method,is the same,but the action pot of total force often raised up,therefore,in the design of retaining wall we should pay enough attention to this aspect.

关 键 词：被动土压力 地震条件 微分薄层法 地震作用的隐含处理 

分 类 号：TU432[建筑科学—岩土工程]