多折面幕墙支承体系张拉方案研究  

Tension Scheme Analysis of Multi-inclined Plane Cable-strut Truss

作　　者：兰涛[1] 郭彦林[2] 王昆[2] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]清华大学土木水利学院,北京100084

出　　处：《施工技术》2009年第7期11-15,共5页Construction Technology

摘　　要：天津泰达市民文化广场大斜坡由6块骨架式膜结构、空间钢管结构及幕墙支承体系组成,其中钢管结构及索杆桁架幕墙支承体系具有多折面结构形式。索杆桁架幕墙支承体系在张拉时对钢管结构形成较大的合成拉力,因而必须考虑钢管结构的刚度对索杆桁架张拉预应力的影响。在考虑索杆桁架支承体系与钢管结构相互作用的基础上,进行多种张拉施工方案的研究与分析,在张拉全过程模拟分析的基础上,确定了经济的张拉施工方案。Tianjin Taida Civilian Plaza＇s slope consists of the membrane structures and the steel pipe truss structure are associated with the supporting systems of glass curtain wall, of which the latter is a typical cable-strut truss supporting glass curtain. Especially, the cable-strut truss forms continually a multi-inclined plane structure, and they conduct great resultant forces at angle line between planes to steel pipe truss structure. The tensioning scheme and analysis of the cable-strut truss structure were studied in the study, and the interaction between cable-strut truss and steel pipe structures is considered in the analysis. Finally a rational tension procedure and sequence then were proposed, based onthe numbers of full process construction analysis to global structural model comprised of cable-strat trusses and steel pipe structures.

关 键 词：索杆桁架 预应力损失 张拉顺序 施工全过程 

分 类 号：TU391[建筑科学—结构工程]