复合受力下内藏钢桁架混凝土核心筒扭转性能试验  

Experiment Study on Torsional Behavior of RC Composite Core Walls With Concealed Steel Truss Subjected to Combined Action

作　　者：常卫华[1] 曹万林[1] 张建伟[1] 赵长军[1] 王敏[1] 

机构地区：[1]北京工业大学建筑工程学院

出　　处：《北京工业大学学报》2008年第7期720-725,共6页Journal of Beijing University of Technology

基　　金：国家自然科学基金项目(50678010);北京市属市管高校拔尖创新人才基金(05004311200501);北京市自然科学基金项目(8072007);北京市新世纪百千万人才基金(35004999200602)

摘　　要：对2个1/6缩尺的核心简结构模型进行了偏心水平荷载作用下的低周反复荷载试验,一个为普通混凝土核心筒,另一个为内藏钢桁架混凝土组合核心筒.在试验基础上,对比分析了2个试件的抗扭承载力、扭转刚度、扭角延性、扭矩-扭角滞回特性、耗能能力以及破坏特征.试验研究表明,内藏钢桁架混凝土组合核心筒比普通混凝土核心筒抗扭能力显著提高.In this paper, two 1/6 scale core walls including a normal reinforced concrete core wall and a reinforced concrete composite core wall with concealed steel truss were designed. The experimental study on the torsional behavior of two core walls subjected to eccentric horizontal Loading was carried out. The torsional capacity, torsional stiffness, torsional angle ductility, torsion-torsional hysteretic behavior, energy dissipation and failure mechanism of the core walls were discussed. The test results showed that the torsional performance of core walls was improved greatly by the concealed steel truss.

关 键 词：钢筋混凝土 钢桁架 核心筒 偏心加载 扭转性能 

分 类 号：TU375[建筑科学—结构工程]