钢筋钢纤维高强混凝土框架边节点抗震性能试验研究和有限元分析  

Experimental investigation and finite element analysis on seismic behavior of steel fiber reinforced high-strength concrete frame exterior joints

作　　者：王廷彦[1,2] 李长永[1,2] 张军伟[2] 

机构地区：[1]华北水利水电学院土木与交通学院,河南郑州450011 [2]郑州大学土木工程学院,河南郑州450002

出　　处：《混凝土》2011年第4期33-37,42,共6页Concrete

基　　金：国家自然科学基金(50678159)

摘　　要：通过4个钢筋钢纤维混凝土框架边节点的低周反复加载试验研究和有限元分析,探讨了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,减慢了节点抗剪承载力退化速率,减缓了节点刚度退化程度,增大了节点延性,提高了框架节点的耗能能力。By experimental investigating and finite element analysis the four steel fiber reinforced high-strength concrete frame exterior joint under the low cycle loading,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,it enhances the restriction role to the concrete of the core area the joint;increases the shearing-resistance capacity of the core area of the area;slows down the shearing-resistance capacity and rigidity degeneration degree;increases the joint ductility strength and improves the energy dissipation capacity.

关 键 词：钢纤维高强混凝土 框架边节点 抗震性能 试验研究 有限元分析 

分 类 号：TU528.01[建筑科学—建筑技术科学]