上部结构-筏基-地基共同工作下结构构件内力分析  

Structural components inner force analysis on interaction of up-structure,raft foundation and soil

作　　者：刘俊[1] 赵洋[1] 滕军[2] 

机构地区：[1]香港华艺设计顾问(深圳)有限公司,深圳518031 [2]哈尔滨工业大学深圳研究生院,深圳518055

出　　处：《建筑结构》2009年第S2期447-450,共4页Building Structure

摘　　要：在常规的高层结构设计中,一般将上部结构和基础部分分开设计,即分析上部结构时认为底部固接,忽略基础和地基土的变形对其内力的影响。而实际上部结构-基础-地基三者共同工作、协同变形,基础和地基变形会引起上部结构内力的重分布,上部结构对基础的变形也具有一定的限制作用。因此,设计常用方法与实际情况存在一定的差异。以某高层结构为例,运用ANSYS软件建立上部结构-筏板基础-地基共同工作的分析模型,分析考虑三者共同工作和单独考虑上部结构两种情况下结构构件内力的变化情况;并进一步分析不同的地基土弹性参数对上部结构内力的影响规律,为设计提供参考。In the regular design of high-rise buildings,up-structure and basement are analyzed separately,which considering bottom of up-structure as fixed end,ignoring the inner force affection of foundation sedimentation.But in fact,structure,foundation and ground base works as a integrality,they deform compatible,the deformation of foundation and ground base can lead to redistribution of inner forces,as well as the structure has a restriction to foundation of sedimentation.As a result,there are differences between usual design method and practical situation.Based on an actual project,using ANSYS software,it analyzes the alteration of structural member inner forces with and without the consideration of interaction,and does further analysis of affection of different soil parameter on structure inner forces for the reference in design.

关 键 词：上部结构 基础 地基 共同工作 内力分析 

分 类 号：TU470[建筑科学—结构工程]