复杂体型高层建筑桩基础结构内力的计算分析方法  

Analysis method for internal force of pile foundation of complex high-rise buildings

作　　者：滕延京[1] 石金龙[1] 宫剑飞[1] 王曙光[1] 

机构地区：[1]中国建筑科学研究院地基基础研究所,北京100013

出　　处：《岩土工程学报》2013年第S2期1138-1142,共5页Chinese Journal of Geotechnical Engineering

摘　　要：对考虑上部结构–基础–地基共同作用的桩基础结构内力分析,判断其数值分析结果能否用于保证安全的桩基结构设计,应对共同作用分析的计算精度进行研究。经实测工程结果的验证,当共同作用分析的桩基沉降分布形态和大小均满足本地区工程实测结果,计算输出的基桩反力与计算输入的基桩支承刚度对应的基桩反力偏差小于10%的计算精度条件时,共同作用的计算结果可直接用于桩基础结构内力分析。计算分析可采用一次形成整体基桩支承刚度,荷载一次施加或分级施加形成基桩支承刚度,分段增量计算,最后叠加计算结果两种方法。For the internal force analysis considering structure-foundation-soil interaction of pile foundation, the results of the internal force analysis used in structural design should be judged whether or not the structural safety is ensured, and the calculation precision should be studied. Based on the measured results, when the interaction analysis results of pile foundation settlement distribution shape and value meet the regional measured results and the deviation between the input pile stiffness and the initial pile stiffness is less than 10%, the calculated results can be directly used for the internal force analysis of pile foundation. The calculation can use the following two methods:(1) integral rigidity of one-time forming pile;(2) integral rigidity of one-time or step load forming pile, segmented incremental calculation and final superposition calculation.

关 键 词：共同作用分析 计算精度 桩基础 高层建筑 

分 类 号：TU473.1[建筑科学—结构工程]