扇形弓弦预应力组合结构试验研究  

An Experimental Study of the Prestressed Sector-Bowstring Structure

作　　者：宋彧[1] 胡志礼[1] 杨文侠[1] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050

出　　处：《甘肃科学学报》2007年第1期131-135,共5页Journal of Gansu Sciences

基　　金：甘肃省自然科学基金暨中青年科技基金(3ZS041-A25-023)

摘　　要：提出了扇形弓弦预应力组合结构的概念,介绍了该结构的特点和受力原理;采用节点等值加载方案对扇形弓弦预应力组合结构进行分级加载试验研究,得出相关的弓梁主筋应变发展规律和弓梁跨中挠度曲线,探明扇形弓弦预应力组合结构的破坏形态.试验研究结果表明,这种新型组合结构受力合理、可靠,可供工程应用参考.This paper put forward the concept of the prestressed sector-bowstring structure, recommended its structural characteristics and load-bearing principle. An experimental study of multistage loading was made by adopting the program of equivalent loads at enery nodal point of the structure thus obtaining, the relevant development rule of the strain of the longitudinal reinforcement and the relative curve of load and distortion of the mid-span of the bowing-beam. The destruction shape of the structure was probed. The result of experimental study shows that such a new-type combining structure bears loads reasonably and reliably. All these can be suitable for the engineering personnels to use and consult.

关 键 词：扇形结构 弓弦结构 预应力 试验研究 

分 类 号：TU398.9[建筑科学—结构工程]