土类对轴向循环荷载下桩性状的影响  

Influence of Soil Type on Behaviour of Cyclic Axially Loaded Pile

作　　者：陈竹昌[1] 徐和[1] 

机构地区：[1]同济大学岩土工程系

出　　处：《同济大学学报（自然科学版）》1989年第3期329-336,共8页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金(重大项目)的资肋

摘　　要：根据粘土中和砂土中模型桩的试验资料,分析了不同土类中桩在单、双向循环荷载下其累积位移和动位移幅值随振动次数的变化规律。文中建议用循环荷载下桩的累积位移发展的条件来确定桩承载力的方法,得到了粘土中和砂土中模型桩的归一化承载力曲线。最后,讨论了土类对轴向循环荷载下桩承载力的影响。According to test data on model piles in clay and in sand, the variation of cyclic displacement of cyclic displacement amplitude and cumulative displacement of plies in different type of soils under one-way and two-way cyclic loading with number of cycles is investigated. The normalized curves of ultimate skin friction of pile in clay and in sand under cyclic loading, which in the paper is suggested to be determined by the condition of cumula-tive displacement development with the ratio of cyclic load to static load, are obtained. The influence of soil type on ultimate skin friction under cyclic loading is observed and discussed.

关 键 词：土壤 轴向荷载 循环荷载 承载力 桩 位移 

分 类 号：TU473.11[建筑科学—结构工程]