钢纤维局部增强高强混凝土框架边节点抗震性能试验研究  

Experimental investigation on seismic behavior of high-strength concrete frame exterior joints partially reinforced by steel fiber

作　　者：张军伟[1] 王廷彦[1,2] 

机构地区：[1]郑州大学新型建材与结构研究中心,河南郑州450002 [2]华北水利水电学院交通与土木学院,河南郑州450011

出　　处：《混凝土》2011年第7期13-16,共4页Concrete

基　　金：国家自然科学基金(50678159);河南省创新型科技人才队伍建设工程(094100510009)

摘　　要：通过3个钢纤维局部增强框架边节点的低周反复加载试验,探讨了柱端轴压比对钢纤维高强混凝土框架边节点抗震性能的影响。结果表明:随着柱端轴压比的增加,其对节点核心区混凝土的约束作用逐渐增大,减缓了抗剪承载力和刚度的退化,限制了节点核心区剪切变形,提高了节点核心区的抗剪承载力、延性和耗能能力。By the experimental investigation and finite element analysis of the three steel fiber reinforced high-strength concrete frame exterior joint under the low cycle loading, discussed the influence of axial compressive ratio on seismic capacity of the joint.The result shows that, the increase of the axial compressive ratio enhances the restriction role to the joint core area concrete, slows down the degeneration degree of shearing-resistance capacity and rigidity, limits the shearing deformation of the joint core area, enhances the shearing-resistance capacity of the core area, the joint ductility and the energy dissipation capacity.

关 键 词：钢纤维高强混凝土 框架边节点 抗震性能 轴压比 

分 类 号：TU528.01[建筑科学—建筑技术科学]