钢筋钢纤维高强混凝土框架边节点抗震性能试验研究  

EXPERIMENTAL INVESTIGATION ON SEISMIC BEHAVIOR OF STEEL FIBER REINFORCED HIGH-STRENGTH CONCRETE FRAME EXTERIOR JOINTS

作　　者：高丹盈[1] 张军伟[1] 

机构地区：[1]郑州大学新型建材与结构研究中心,郑州450002

出　　处：《工业建筑》2012年第5期84-89,28,共7页Industrial Construction

基　　金：国家自然科学基金项目(50678159)

摘　　要：对4个钢筋钢纤维混凝土框架边节点进行低周反复加载试验研究,探讨钢纤维体积率和配箍率对该类型节点抗震性能的影响。结果表明,随着钢纤维体积率和配箍率的增大,加强了对节点核心区混凝土的约束作用,增强了节点核心区抗剪能力,减慢了抗剪承载力退化速率,减缓了节点刚度退化程度,降低了刚度退化状况,减小了节点核心区剪切变形,增大了节点延性,提高了框架节点的耗能能力。It was conducted an experimental investigation on four steel fiber reinforced high-strength concrete frame exterior joints under the low cycle loading, and discussed the influence of steel fiber volume ratio and stirrup ratio on seismic capacity of the joint of this type. The result shows that with the increase of the steel fiber volume ratio and stirrup ratio, the restriction role to the concrete of the core area of the joint was enhanced; the shearing-resistance capacity of the core area of the joint was increased; the degeneration degree of shearing-resistance capacity and rigidity was mitigated; joint core area shearing deformation was reduced; the joint ductility was increased and the energy dissipation capacity of the joint was improved.

关 键 词：钢纤维高强混凝土 框架边节点 抗震性能 试验研究 

分 类 号：TU377[建筑科学—结构工程] TU352.11