钢筋混凝土框架节点抗震性能研究综述

摘要

国内外多次地震灾害表明,钢筋混凝土框架结构的倒塌,多数是由梁柱节点破坏引起.然而目前,我国规范(GB50011-2010)中对节点抗剪承载力的计算仍采用的是半经验半理论公式,缺乏理论依据.本文通过各国钢筋混凝土梁柱节点试验研究、理论研究及数值模拟研究,归纳了节点抗震性能研究发展状况,并指出了目前研究存在的主要问题和研究方向.%A variety.of earthquake disasters have indicated that the collapse of the reinforced concrete frame structure is primarily caused by the failure of the beam-column joint.However,the calculation of the shear bearing capacity of the joint has been based on the semi-analytic method in the current standard (GB50011-2010) at present,which is lack of theoretical basis.Based on the experimental,theoretical and numerical simulation researches,the seismic performance of RC beam-column joints are summarized and the main problems of current research and the research direction are pointed out.