竖向荷载作用下钻孔灌注桩摩阻力强化效应的探讨  

Study on the Strengthening Effect of Frictional Resistance on Bored Piles under Vertical Loads

作　　者：王红卫[1] 杜泽超[1] 崔诗才[1] 

机构地区：[1]聊城大学建筑工程学院,山东聊城252059

出　　处：《工程勘察》2007年第6期6-9,共4页Geotechnical Investigation & Surveying

基　　金：聊城大学校计划项目(X051044)

摘　　要：通过应用有限元计算软件ANSYS对钻孔灌注桩的数值模拟,结合一工程试桩的试验结果,分析了竖向荷载作用下桩侧摩阻力的变化规律和桩端附近土的活动方式,总结了摩阻力产生强化效应的大致范围,并从摩阻力强化效应的角度将桩身分为无强化效应区、次强化效应区和强化效应区。Bored piles are numerical simulated by the finite element software named ANSYS. According to the test results of piles under vertical loads, the change rule of frictional resistance on the piles and the behavior of the soil near the bottom of the piles are analyzed. The range where frictional resistance creates strengthening effect is generalized. From the point of the strengthening effect of frictional resistance, a pile can be divided into nonstrengthening effect area, secondary strengthening effect area and the strengthening effect area.

关 键 词：钻孔灌注桩 摩阻力 强化效应 数值模拟 破坏模式 

分 类 号：TU473.1[建筑科学—结构工程]