框架-混凝土核心筒混合结构位移限值的探讨  

Discussions about drift limit of frame-concrete corewall hybrid structures

作　　者：聂建国[1] 田淑明[1,2] 

机构地区：[1]清华大学土木工程系土木工程安全与耐久性教育部重点实验室,北京100084 [2]中冶京诚工程技术有限公司,北京100053

出　　处：《建筑结构》2012年第4期28-33,共6页Building Structure

基　　金：国家自然科学基金重点项目(50438020);长江学者和创新团队发展计划资助项目(IRT00736)

摘　　要：框架-混凝土核心筒混合结构在我国已得到广泛应用,但对其水平位移限值的研究尚不完善,还存在诸多问题。通过理论分析和有限元计算,讨论了高宽比对结构变形的影响,明确了高宽比与位移限值间的相关性。通过四个算例的位移特性和安全性的比较,认为相对层间位移角和顶点位移角可以作为层间位移角的有效补充,而且当外围框架类型不同时,宜视位移指标不同给出相应的位移限值。Frame-concrete corewall hybrid structure is widely used in China,but research on horizontal drift limit is not fully addressed.Based on theoretical analysis and finite element analysis,influence of height-width ratio on structural deformation was discussed and the relationship between height-width ratio and drift limit was illustrated.Furthermore,drift and safety of four frame-concrete corewall hybrid structures were compared.As a result,relative inter-story drift and roof drift can act as effective supplements of inter-story total drift,and drift limit should be determined according to different drift index for structures with different peri-frame type.

关 键 词：框架-混凝土核心筒混合结构 高宽比 水平位移限值 

分 类 号：TU375[建筑科学—结构工程]