长短桩桩筏基础相互作用系数解法及分析  

An Interaction Factor Approach and Analysis for Long-Short-Pile Piled Raft Foundations

作　　者：曹明[1] 陈龙珠[1] 陈胜立[1] 郑建国 

机构地区：[1]上海交通大学土木工程系,上海200240 [2]中国联合工程公司,杭州310012

出　　处：《地下空间与工程学报》2007年第2期382-388,共7页Chinese Journal of Underground Space and Engineering

基　　金：国家自然科学基金项目(No.50478022)

摘　　要：采用积分方程法推导出求解桩-桩、桩-土、土-土之间的相互作用系数所需要的第二类Fredholm积分方程,利用叠加原理对长短桩桩筏基础进行计算分析,通过与其它计算方法的比较验证了计算方法的正确性。并对长短桩桩筏基础的沉降、各桩以及土之间的荷载分担情况进行了分析。该方法可以用来分析大规模的长短桩桩筏基础,具有较好的工程应用前景。By the integral method the second kind Fredholm＇s integral equation is deduced to find the factors of pile- pile, pile -soil and soil-soil interaction. Using the principle of superposition the long-short-pile piled raft foundations are calculated. The present method is verified with other methods. ALso, an analysis is made to study the long-short-pile piled raft foundation settlement, the loads shared by the individual pile and subsoil. The present method can be readily used to analyze the large piled raft foundations.

关 键 词：长短桩桩筏基础 相互作用系数 荷载分担 沉降 

分 类 号：TU473[建筑科学—结构工程]