超长桩稳定承载力计算新方法  

A new method of calculating stable bearing capacity for overlength piles

作　　者：王成[1] 董倩[2] 

机构地区：[1]重庆交通学院桥梁与隧道工程系,重庆400074 [2]重庆大学土木工程学院,重庆400045

出　　处：《岩土力学》2005年第S1期180-182,共3页Rock and Soil Mechanics

基　　金：西部交通科技项目资助(No.200331822316)。

摘　　要：超长桩稳定性计算是非常重要的问题。桩侧土的弹性抗力为两部分:浅层土体抗力可采用m法的模式,深层土体抗力可采用常数法模式。运用瑞利-里兹法对超长桩进行稳定性分析,得到了超长桩临界荷载公式,并进一步分析了桩的长度系数与桩长的关系,为工程中使用超长桩提供理论参考。The stability calculation of overlength piles is a very important problem. In this paper the soil resistance mode with two parts in the lateral side of pile is proposed. The m-method mode is for shallow soil and the constant method mode is for deep soil. Rely-Ritz method is applied to analyze the stability of overlength piles. The critical load formula for overlength piles is obtained. The variation law of length coefficient of overlength piles is researched so as to provide a theoretical reference for over...

关 键 词：超长桩 土抗力模式 软土地基 瑞利-里兹法 桩的长度系数 

分 类 号：TU473.11[建筑科学—结构工程]