湖南大学学报（自然科学版）Issue(1)：1-7,7.
考虑桩-土相互作用的悬臂式排桩内力计算方法研究
Research on the Internal Forces Calculation of Cantilever Piles Considering Pile-soil Interaction
摘要
Abstract
By analyzing the advantages and disadvantages of commonly used calculation methods and introducing a nonlinear pile-soil interaction model,a method for calculating the internal forces of cantilever piles was proposed, which can consider the pile-soil interaction.Firstly,finite bar elements were used to discretize the pile structures,and then,elemental stiffness matrixes were calculated and incorporated into global stiffness matrix.Secondly,the nonlin-ear function relationship between earth pressure and pile displacement in or out of the foundation pit was assumed,and then the nonlinear function array of j oint loads was established.Thirdly,the overall stiffness equation was formed ac-cording to the global stiffness matrix and nodal load function array,and was solved to obtain the nodal displacement array by using the Newton-Raphson method.Finally,the internal forces of pile and lateral earth pressure were calcu-lated with the elemental stiffness equations and nodal displacement array.The example analysis shows that the pro-posed method is simple and convenient,fully reflecting the characteristics of nonlinear variation of earth pressure act-ing on piles,and revealing the mechanism of pile-soil interaction well.Therefore,it is suitable for the internal force calculation of cantilever piles.关键词
悬臂桩/桩-土相互作用/非线性/Newton-Raphson法Key words
cantilever pile/pile-soil interaction/nonlinear/Newton-Raphson method分类
建筑与水利引用本文复制引用
赵明华,李文,张锐..考虑桩-土相互作用的悬臂式排桩内力计算方法研究[J].湖南大学学报（自然科学版）,2014,(1):1-7,7.基金项目
国家自然科学基金资助项目(50578083) （50578083）
