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摘要：
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采用库仑土压力理论中墙后填土滑动楔体极限平衡的概念 ,在滑动楔体上沿填土深度方向取片体单元进行分析 ,建立关于挡土墙上土压力强度的一阶微分方程 ,并求得了该微分方程的精确解 ,给出了挡土墙上土压力分布的新公式 ,并与库仑土压力公式进行了比较。用试验测试数据对本文方法的计算结果进行了检验
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Based on the Coulomb's concept that the earth pressure against the back of a retaining wall is due to the thrust exerted by the sliding wedge of soil from the back of the wall to a plane which passes through the bottom dege of the wall and has an inclination equal to the angle of θ, the differential equation of first order is set up by the equilibrium of forces on the flake element taken out from the wedge. The theoretical answer to the unit earth pressure on retaining wall is obtained. The comparison is made between Coulomb's formula and the formula presented here and the earth pressure calculated by the formula in this text is also compared with experimental observations.
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基金项目：
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国家自然科学基金!(5 96 790 0 3);;
天津市自然科学基金!(9736 0 6 311)资助课题
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作者简介：
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参考文献：
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〔1〕 Conlomb,C. A. Essais sur une application des regles desmaximis et minimis a quelques problems de statique relatits alarchitecture〔C〕 .Paris:Mem.Acad.Roy.Pres.Divers,Sav. 5 ,7,1776 .
〔2〕 Rankine,W.J.M.On the stability of loose earth〔C〕.Phil.Tians.Roy.Soc.,L ond. 14 7. Part1,185 7.9-2 7.
〔3〕 克列因 ,F.K.散粒体结构力学〔M〕 .陈万佳译 .北京 :人民交通出版社 ,1983.
〔4〕 王元战 ,王玉红 .挡土墙土压力计算的一种新方法〔J〕 .港口工程 .1997,(1) :15 -19
〔5〕 Wang,Y. -Z. Distribution of earth pressure on a retainingwall〔J〕 .Geotechnique(英国 ) .2 0 0 0 ,5 0 (1) :83-88.
〔6〕 天津大学 .土力学与地基 .〔M〕.北京 :人民交通出版社 ,1980
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