倾斜挡土墙后粘性土的地震主动土压力分析

英文篇名：Analysis of seismic active earth pressure of cohesive soil behind inclined retaining wall
中文刊名：世界地震工程
英文刊名：World Earthquake Engineering
作者：夏唐代 ; 华伟南 ; 王志凯
英文作者：XIA Tangdai1 ; HUA Weinan2 ; WANG Zhikai1(1.MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering ; Zhejiang University ; Hangzhou 310058 ; China ; 2.Zhejiang Regulatory Center of Quality and Safety of Water Resources and Hydropower Engineering ; Hangzhou 310013 ; China)
中文关键词：拟动力学方法 ; 地震主动土压力 ; 粘性土
英文关键词：pseudo-dynamics method ; seismic active earth pressure ; cohesive soil
出版日期：2010-12-15
机构：浙江大学软弱土与环境土工教育部重点实验室;浙江省水利水电工程质量与安全监督管理中心;
年：2010
期：S1
出版单位：世界地震工程

摘要

文中考虑水平地震加速度、竖向地震加速度、卓越周期和墙面倾角的因素,运用拟动力学的分析方法,得到了考虑时间和相位变化的粘性土地震主动土压力系数、土压力合力和土压力分布强度的理论公式。在此基础上,分析了水平和竖向地震加速度系数、内摩擦角、墙面摩擦角对最不利工况下滑动面倾角、主动土压力系数、主动土压力分布的影响。研究表明:地震主动土压力分布为非线性;地震加速度导致粘性土的主动土压力大幅增加,增加的程度随着地震水平加速度系数的增大而增加。
Considering the horizontal seismic accelerations,the vertical seismic accelerations,the predominant period and the retaining wall angles,the pseudo-dynamic method is used to obtain seismic active earth pressure coefficient,the resultant force of seismic active earth pressure and the distribution of active earth pressure of cohesive backfill soils with considering time and phase difference on a rigid retaining wall.On this basis,the effects of horizontal and vertical seismic accelerations,the internal fiction angle,the wall friction angle on the inclination of the slip surface,the active earth pressure coefficient and the distribution of active earth pressure under the most unfavorable working conditions are investigated.The results show that the distribution of the seismic active earth pressure is non-linear.The seismic accelerations result in a big increase under the active earth pressure of cohesive soil.The increment increases with the increase of the horizontal seismic acceleration.

引文

[1]Okabe S.General theory of earth pressure and seismic stability of retaining wall and dam[J].Journal of the Japanese society of Civil Engineers,1924,10(5):1277-1323.
    [2]Mononobe N,Matsho H.On the determination of earthquake pressure during earthquake[C]//Proc.of World Engineering Congress(Japan).1929:177-185.
    [3]Sherif MA,Fang Y S.Dynamic earth pressures on walls rotating about the top[J].Soils and Foundations,1984,24(4):109-117.
    [4]Richards R,Huang C,Fishman K L.Seismic earth pressure on retaining structure[J].Journal of Geotechnical and Geoenvironmental Engineer-ing,1999,125(9):771-778.
    [5]Choudhury D,Singh S.Newapproach for estimation of static and seismic active earth pressure[J].Journal of Geotechnical and Geological Engi-neering,2006,24(1):117-127.
    [6]朱桐浩.在地震荷载作用下挡土墙主动土压力[J].四川建筑科学研究,1981,10(3):37-44.
    [7]王贻荪,赵明华.地震土压力一般解及其工程应用[J].湖南大学学报,1990,17(4):71-82.
    [8]刘忠玉,杨会朋,何盛东.刚性挡土墙地震土压力的非线性分布[J].郑州大学学报(工学版),2004,25(2):36-38.
    [9]王立强,王元战,迟丽华.挡土墙地震土压力及其分布[J].中国港湾建设,2007,151(5):1-5.
    [10]Steedman R S,Zeng X.The influence of phase on the calculation of pseudo-static earth pressure on a retaining wall[J].G啨otechnique,1990,40(1):103-112.
    [11]赵恒慧.挡土墙后粘性填土的土压力计算[J].岩土工程学报,1983,5(1):134-146.
    [12]韩立业,陈道政.对粘性土朗肯主动土压力理论中的一个应力的释疑[J].岩石力学与工程学报,2002,21(12):1901-1902.