抗滑桩与滑体之间土拱效应的理论分析  

THEORETICAL ANALYSIS OF THE SOIL-ARC MECHANISM BETWEEN SOILS AND REINFORCING PILES

作　　者：魏作安[1,2] 周永昆[2] 万玲[1,2] 赵颖[3] 代高飞[2] 

机构地区：[1]重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆400044 [2]重庆大学资源及环境科学学院,重庆400044 [3]中国科学院力学研究所,北京100190

出　　处：《力学与实践》2010年第3期57-61,共5页Mechanics in Engineering

基　　金：国家自然科学基金(10772205);高等学校博士学科点专项科研基金(200806110012);中国博士后科学基金(20070420123);湖南省煤矿安全开采技术重点实验室开放基金(200806)资助项目

摘　　要：从力平衡的角度,分析了抗滑桩的抗滑阻力与滑体的下滑力之间的依存关系以及传递过程.利用弹性力学理论,推导出桩后土体应力场的分布函数.通过绘制应力等值线图,发现抗滑桩与土体之间产生土拱现象的机制是滑体内的应力状态由不平衡逐渐到达平衡的结果,属于应力拱的表现形式.Anti-slide pile is a major landslide prevention measure.This paper analyzes the transition process of force between soil and anti-slide pile based on force equilibrium.According to the relationship of acting force and reacting force between soil and anti-shde pile,the stress distribution in the soil behind anti-slide pile is obtained.From the stress isograms,it is shown that the mechanism of soil arc between anti-slide pile and soil is the result of the stress state from imbalance to balance in soil.

关 键 词：抗滑桩 应力分布 解析解 岩土力学 

分 类 号：O319.56[理学—一般力学与力学基础]