层状地基中群桩基础弹性理论解法及参数分析  

An Elastic Theory Approach and Parametric Analysis of Pile Group in Layered Soils

作　　者：曹明[1,2] 陈胜立[1] 

机构地区：[1]上海交通大学安全与防灾工程研究所,上海200240 [2]上海电视大学,上海200433

出　　处：《土木建筑与环境工程》2012年第2期1-6,共6页Journal of Civil,Architectural & Environment Engineering

基　　金：国家自然科学基金项目(50478022);上海市教委优青教师课题(dsd08005);上海市教育委员会科研创新项目(10YZ208)

摘　　要：根据Muki&Sternberg的计算方法,建立了层状地基中不同桩长、桩径、桩体材料情况下桩-桩间的相互作用系数,利用叠加原理对层状地基中群桩基础进行计算分析,通过与已有文献计算结果的比较,验证了计算方法的正确性,并对层状地基中群桩基础的沉降以及各桩的荷载分担情况进行了参数分析。计算方法得到的相互作用系数可以考虑桩的"加筋效应"。能够用来分析大规模群桩基础,具有一定的工程应用前景。Based on the technique proposed by Muki Sternberg,a rigorous analytical method for calculating the interaction factor between two piles with different lengths,diameters and properties is presented.The pile group in layered soils is calculated by using the principle of superposition.The validity of the presented method has been verified through comparing with those from other existing solutions.A parametric analysis is made to study the pile group settlement and the loads shared by the individual pile.The proposed interaction factors of pile-pile can consider the strengthening effect of intervening piles.The proposed method can be used to analyze the large pile group.

关 键 词：层状地基 群桩 相互作用系数 荷载分担 沉降 

分 类 号：TU470[建筑科学—结构工程]