蜂窝梁-焊接环式箍筋柱节点抗剪受力性能

Study on the Shear Performance of Castellated Beam-Welding Ring Stirrup Column Joint

通过4个蜂窝梁贯通型接点、2个外伸式端板连接节点,以及2个平齐式端板连接节点的低周反复荷载试验,研究焊接环式箍筋柱与焊接蜂窝梁连接节点的破坏特征和抗震性能.在此基础上,对焊接环式箍筋柱节点的抗剪受力性能进行分析,考虑混凝土、焊接环式箍筋、不同连接形式的约束作用及轴力等因素的影响,最终得出4组试件抗剪承载能力的计算公式.结果表明,理论与试验结果之间存在一定的误差,但是整体而言仍然具有参考价值,可为工程设计提供实际依据.

A series of specimens, including 4 pass-through connection joints, 2 extended end-plate connection joints, 2 end-plate connection joints under low-cycle cyclic load are tested in order to investigate the failure characteristic and seismic performance. The performance of the specimens under shear force are analyzed according to the test results. The calculation formulas for the shear force capacity of the 4 group specim,ns is presented, which Consider concrete strength, welding ring stirrups, the restriction effect of different connection forms and axial force. Though there is certain errors between the theory analysis and the test results, the theory formulas is worth for reference value as a whole, and would guide the practical design.