Analysis of Interaction Factors Between Two Piles  

作　　者：曹明 陈龙珠 

机构地区：[1]Department of Civil Engineering,Shanghai Jiaotong University

出　　处：《Journal of Shanghai Jiaotong university(Science)》2008年第2期171-176,共6页上海交通大学学报（英文版）

基　　金：The National Natural Science Foundation of China(No.50478022)

摘　　要：A rigorous analytical method is presented for calculating the interaction factor between two identical piles subjected to vertical loads. Following the technique proposed by Muki and Sternberg, the problem is decomposed into an extended soil mass and two fictitious piles characterized respectively by Young＇s modulus of the soil and that of the difference between the pile and soil. The unknown axial forces along fictitious piles are determined by solving a Fredholm integral equation of the second kind, which imposes the compatibility condition that the axial strains of the fictitious piles are equal to those corresponding to the centroidal axes of the extended soil. The real pile forces and displacements can subequally be calculated based on the determined fictitious pile forces, and finally, the validity of the proposed approach and desired pile interaction factors may be obtained. Results confirm the portray the influence of the governing parameters on the pile interaction.A rigorous analytical method is presented for calculating the interaction factor between two identi- cal piles subjected to vertical loads.Following the technique proposed by Muki and Sternberg,the problem is decomposed into an extended soil mass and two fictitious piles characterized respectively by Young's modulus of the soil and that of the difference between the pile and soil.The unknown axial forces along fictitious piles are determined by solving a Fredholm integral equation of the second kind,which imposes the compatibility condition that the axial strains of the fictitious piles are equal to those corresponding to the centroidal axes of the extended soil.The real pile forces and displacements can subequally be calculated based on the determined fictitious pile forces,and finally,the desired pile interaction factors may be obtained.Results confirm the validity of the proposed approach and portray the influence of the governing parameters on the pile interaction.

关 键 词：fictitious pile vertical load interaction factor analytical solution 

分 类 号：TU473[建筑科学—结构工程]