【摘要】 对 6个不同构造方式的 1∶2的梁柱节点试件进行反复循环荷载下试验研究。结果表明 ,与传统的箍筋相比 ,附加节点斜筋能和梁筋有限度地共同工作 ,从而将塑性铰从柱面转移。这样改善了钢筋的粘结状况 ,避免中等延性范围内纵筋的屈服向节点核心区扩展 ,地震能量被更有利的耗散机制吸收。同时 ,斜筋使节点本身的强度和刚度也得到进一步加强。结果可供中等烈度区抗震设计时参考更多还原

【Abstract】 A new detailing of joint reinforcement, i.e. additional diagonal bars, is proposed and studied. Six half size interior beam column subassemblages are tested under reversed cyclic loading. Based on the test results, it is found that the additional diagonal bars can work together with the longitudinal bars and succeed in moving the plastic hinge from the column face. As a result, the bond condition is improved, and the joint core could be prevented from yielding penetration up to a moderate ductility level. The earthquake energy is thus dissipated more favorably. In addition, because of the presence of the inclined steel portion in the joint, the strength and stiffness of the joint panel are improved as well.更多还原