基于强度折减的边坡抗滑桩可靠性分析  

RELIABILITY ANALYSIS OF SLOPE WITH ANTI-SLIDE PILES BY DISPLACEMENT ITERATIVE FEM BASED ON STRENGTH REDUCTION METHOD

作　　者：吴坤铭[1,2] 王建国[1] 谭晓慧[3] 

机构地区：[1]合肥工业大学土木与水利工程学院,合肥230009 [2]皖西学院城市建设与环境系,安徽六安237012 [3]合肥工业大学资源与环境工程学院,合肥230009

出　　处：《工业建筑》2011年第5期99-103,共5页Industrial Construction

基　　金：国家自然科学基金面上项目(40972194);安徽高校省级自然科学研究计划项目(KJ2010B267)

摘　　要：为了对边坡抗滑桩加固工程进行合理的设计,建立位移迭代有限元模型模拟桩-土间的相互作用,基于强度折减的位移迭代有限元法对边坡抗滑桩加固工程进行可靠性分析,把计算参数视为随机变量考虑参数变异性对抗滑桩锚固深度及边坡加固工程可靠性的影响。可靠指标的选取应考虑边坡工程等级,以目标可靠度为控制指标去指导抗滑桩锚固深度的设计。工程算例表明,采用可靠性方法设计抗滑桩加固工程是合理的,具有一定的工程应用价值。In order to design a slope reinforced by anti-slide piles rationally,a calculated method of interaction process of the pile-soil was presented.It was analyzed the reliability of slope reinforced by anti-slide piles by means of displacement iterative finite element method based on the method of strength reduction theory.The calculated parameters were regarded as random variables when considering the different values of random variable impact on the reliability of anchoring depth for anti-slide piles and reinforced slope.The classification of a slope project was considered in selecting the reliability index,the target reliability as control index to guide the design of the anchoring depth of anti-slide piles.Examples show that using reliability analysis to design the slope reinforced by anti-slide piles is rational and is useful for engineering applications.

关 键 词：位移迭代 有限元法 强度折减原理 可靠度分析 

分 类 号：TU473.1[建筑科学—结构工程]