重庆大学学报2017，Vol.40Issue(1)：65-75,11.DOI:10.11835/j.issn.1000-582X.2017.01.008
考虑渗流和地震时的砂土边坡稳定性计算
Calculation of sand slope stability with considering seepage and earthquake
摘要
Abstract
On the basis of the limit equilibrium theory,we took a sand slope as research object and deduced the expressions of the slope safety factor with quasi-static method and pseudo-dynamic method when steady seepage and earthquake were present.The results of computer programs agree well with those of exiting methods,which verifies the validity of the two analytic methods.Parameter analysis shows that there is a linear relationship between hydraulic gradient and safety factor,and the higher the water level,the easier the slope is to lose stability.When the seepage direction is downward,the slope stability increases with the increase of hydraulic gradient,and when the seepage direction is upward,the change rule is opposite.The slope stability increases significantly with the increase of horizontal seismic acceleration factor,and the effect of vertical seismic acceleration factor on the slope stability is relatively small,which can be ignored in simplified calculation.Generally,the analytic formula of pseudo-static method is simple and practical, and the formula of the pseudo-dynamic method can more comprehensively investigate the characteristics of the slope stability changing with time.关键词
砂土边坡/渗流/拟静力法/拟动力法/稳定性计算Key words
sand slope/seepage/pseudo-static method/pseudo-dynamic method/stability calculation分类
建筑与水利引用本文复制引用
卢玉林,薄景山,陈晓冉,王丽..考虑渗流和地震时的砂土边坡稳定性计算[J].重庆大学学报,2017,40(1):65-75,11.基金项目
河北省教育厅高等学校科学技术研究项目（ZC2016150）；中国地震局教师科研基金（20120103）；中央高校基本科研业务费专项资金（ZY20150203）。Supported by Scientific Research Plan Projects for Higher Schools in Hebei Province（ZC2016150），Teachers’ Scientific Research Fund of China Earthquake Administration（20120103）and the Fundamental Research Funds for the Central Universities（ZY20150203）． （）
