基于P^Y曲线的基桩内力与变形分析  

Analyzsis of Internal Force and Distortion on Single Pile Based on P^Y Curve Model

作　　者：胡春林[1] 胡胜刚[1] 

机构地区：[1]武汉理工大学土木工程及建筑学院

出　　处：《土工基础》2006年第1期45-48,共4页Soil Engineering and Foundation

基　　金：国家自然科学基金(50278051)资助

摘　　要：研究在桩顶承受水平荷载、弯矩及线性或非线性弹性土体共同作用下基桩沿桩身的水平位移、转角、弯矩和剪力等。介绍以线弹性地基梁模型为理论依据的张氏法、c法、m法、k法和以非线性弹性地基梁模型为理论依据的P^Y曲线法。结合工程实例,分析了软粘土的P^Y曲线,确定各种方法地基土比例系数的取值,用有限差分法及数学迭代法求解基桩挠曲微分方程,对计算结果进行总结、分析和比较。The horizontal displacement, corner,bending moment and Shearing strength etc. along a foundation pile under the mutual action ot horizonta pile under the mutual action ot horizontal loading bending moment and linear or nonlinear soil mass are studied, several pile foundation calculation methods are introduced in detail, which are based on elastic ground beam model theory, such as Zhang-method, C-method , M-method, K-method and P～Y curve method. Based on the project instance, This paper has analysed the P～Y curves of the soft clay, and confirmed the fetching value of different coefficient of proportion of ground soil of the method, and divided a bending differential equation of pile with limited difference law and mathematics, summarized, analysed and compared the results of calculation.

关 键 词：基桩 P^y曲线 弹性地基梁 非线性弹性 有限差分法 

分 类 号：TU473[建筑科学—结构工程]