支承结构界限对混合结构体系协同工作的影响  

THE INFLUENCE OF THE DIFFERENCES IN SUPPORTING STRUCTURE RANGES ON COOPERATIVE EFFECT OF HYBRID STRUCTURE

作　　者：陈经纬[1] 施刚[1] 陈宏[2] 

机构地区：[1]土木工程安全与耐久教育部重点实验室,清华大学土木工程系,北京100084 [2]清华大学建筑设计研究院有限公司,北京100084

出　　处：《工业建筑》2015年第11期157-161,共5页Industrial Construction

基　　金：北京高等学校青年英才计划项目(YETP0077)

摘　　要：对于上部大跨空间桁架与下部混凝土支承结构组成的混合结构体系,考虑上下部结构间的协同工作很有必要。考虑到计算的经济性,当下部支承结构体量比上部结构大很多时,能否仅选取部分支承结构来分析协同工作效应还有待研究。以武汉银河汇工程为算例,通过选取不同界限内的支承结构建立不同的结构模型,分析其对上部大跨空间桁架与下部混凝土支承结构体系协同工作的影响。计算结果表明:仅选取部分支承结构考虑协同工作效应具有可行性,但部分支承结构模型与全部支承结构模型的计算结果还存在一定差异。It is necessary to consider cooperative effects for hybrid structures composed of long span space truss with supporting concrete frame. It remains a problem that whether it is reasonable to take a part of the supporting structure to consider cooperative effects when the supporting structure is much larger than the space truss. Wuhan Yinhehui Project was taken for example to consider the different influence on cooperative effect of long span space truss with supporting concrete frame by modeling different ranges of supporting structures. The calculation results indicated that it was feasible to take part of the supporting structure to consider cooperative effects for engineering design. However there was still some differences between the model with a part of supporting structure and the model with whole supporting structure.

关 键 词：混合结构 协同工作 空间桁架 支座条件 边界范围 

分 类 号：TU398.9[建筑科学—结构工程]