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降雨渗流作用下残积土边坡的数值分析
引用本文:蒋刚,林鲁生,刘祖德.降雨渗流作用下残积土边坡的数值分析[J].陶瓷科学与艺术,2005(5).
作者姓名:蒋刚  林鲁生  刘祖德
作者单位:南京工业大学土木工程学院 江苏南京210009 (蒋刚),深圳市建筑工务局市政工程处 广东深圳518031 (林鲁生),武汉大学土木建筑学院 湖北武汉430072(刘祖德)
基金项目:江苏省高校自然科学研究资助项目(01KJB410001)
摘    要:介绍了某残积土边坡受降雨影响的变形特点及边坡渗流分析计算理论,得到了残积土边坡降雨作用下的稳定渗流场,编制了考虑降雨渗流引起渗透力作用的边坡非线性有限元计算程序,计算模型采用Duncan非线性弹性模型和修正v值的Duncan模型。根据计算结果,分析了降雨渗流对残积土边坡的应力和变形的影响。边坡应力水平较小,但应重视边坡变形引起裂缝的防治。

关 键 词:残积土  降雨渗流  渗透力  初始应力  Duncan模型  有限元

Numerical analysis on residual soil slope under rainfall infiltration
JIANG Gang,LIN Lu-sheng,LIU Zu-de.Numerical analysis on residual soil slope under rainfall infiltration[J].Ceramics Science & Art,2005(5).
Authors:JIANG Gang  LIN Lu-sheng  LIU Zu-de
Affiliation:JIANG Gang~1,LIN Lu-sheng~2,LIU Zu-de~3
Abstract:The displacement character of certain residual soil slope affected by rainfall infiltration is introduced. The seepage analysis method of slope is discussed, and the steady seepage field of residual soil slope affected by rainfall infiltration is made. The non-linear finite element program of slope with seepage force by infiltration is compiled, non-linear elastic Duncan model and modified v of Duncan model in the program are adopted. The stress and deformation of residual soil slope under rainfall infiltration calculated with FEM are analyzed. Slop stress level is relatively small, but prevention from cracking of slop due to deformation is needed to pay more attention.
Keywords:residual soil  rainfall infiltration  seepage force  initial stress  Duncan model  FEM
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