湿式外包钢法加固钢筋混凝土柱在复合受扭作用下的试验研究  

EXPERIMENT ON THE HIGH-STRENGTH DISRUPTED CONCRET COLUMN STRENGTHED BY EXTERNALLY BONDED STEEL PLATES

作　　者：周年强[1] 刘继明[2] 

机构地区：[1]青岛理工大学,青岛266033 [2]西安交通大学,西安710049

出　　处：《建筑技术开发》2006年第9期8-10,共3页Building Technology Development

摘　　要：通过对3根承受压力，弯剪力作用的高强混凝土柱构件在低周反复扭矩作用下的抗震性能试验，研究了其在复合受力状态下的承载能力，对比了加固（补强）前后受扭构件的破坏形态、滞回曲线、承载力、刚度变化等特性，试验表明，箍钢板与构件、结构胶形成整体抵抗外力，能充分提高柱的抗扭承载能力。通过变角空间桁架理论结合试验结果推导了加固构件极限扭矩实用计算公式，分析表明公式计算值与试验值符合较好。By means of an experiment of three high strength reinforced concret （RC） columns subjected to compression shear and low-cyclic torsion, the failure mode, hysteresis loop, rigidity properties as well as influence of the areas of bonded steel plates are analyzed. It is demonstrated that the torsional behavior are improved remarkably with the whole effect of the out-packing stick steel, member and structural adhesive. Based on the variable-angle space truss model theory and the result of experiment, a practical formula of ultimate torsion strength is derived. The predictions of the formula agree well with the experiment result.

关 键 词：外包钢加固柱 复合受扭 抗扭承载力 

分 类 号：TU317[建筑科学—结构工程]