预应力巨型支撑—钢框架结构拉索预拉力取值准则的试验研究  

Model Experiment on Rule of Cables' Initial Prestress in Prestressed Mega Brace and Steel Frame Structure

作　　者：顾盛[1] 裴波 沈超明[1] 

机构地区：[1]江苏科技大学土木工程系,江苏镇江212003 [2]苏州市城市建设开发有限公司,江苏苏州215000

出　　处：《建筑科学》2012年第7期52-55,共4页Building Science

基　　金：国家自然科学基金项目(50948035);江苏省自然科学基金项目(BK2009723)

摘　　要：基于纯钢框架结构及钢框架—支撑结构的受力特点,提出新的结构形式———预应力巨型支撑—钢框架结构体系。制作缩尺模型,以试验研究该新型体系中拉索预拉力取值准则及结构侧移模式。试验表明:预应力巨型支撑—钢框架结构中,拉索预拉力以"受压最大的拉索在外部荷载作用下剩余拉力接近于零"为确定准则;预应力巨型支撑—钢框架结构侧移模式具有弓形特征。Based on steel frame structure and frame-brace structure, the prestressed mega brace and steel frame structure is presented. The rule of initial prestress of mega brace and the structural displacement mode are studied with model experiment. The result of experiment indicates that initial prestress value should comply with the rule that the residual tension in compression brace is near to zero under exterior loads, and the displacement mode of the prestressed mega braced and steel frame structure shows bow shape.

关 键 词：预应力钢结构 巨型支撑 框架结构 初始预拉力 侧移模式 

分 类 号：TU393.2[建筑科学—结构工程]