腹板开孔型钢框架梁柱节点抗震性能试验_李波.pdfVIP

38 8 Vo l138 N o1 8 2 0 0 6 8 JOURNAL OF HARBIN INSTITUTE OF TECHNOLOGY Aug. 2006 李波, 杨庆山, 茹继平 ( , 1000 , E-m ail: libo 77@ 163. com) - : 介绍了梁腹板开孔型钢框架梁柱节点, 以及 12 个足尺试件的拟静力破坏试验的试验结果. 节点 破坏模式和滞回曲线的比较分析表明, 按现行规范设计的全焊型梁柱节点在地震作用下可能会出现连接焊 缝的脆性破坏, 满足不了抗震设计的延性要求; 腹板开孔型节点可以有效的将塑性铰外移到距节点区较远的 梁截面上, 在强震作用下, 其破坏形式是梁翼缘板腹板的局部变形, 满足抗震设计的延性要求; 当梁腹板削 弱量合适时, 节点的承载力不会发生较大减小. 因此, 腹板开孔型节点具有良好的抗震性能. 此外这种节点应 用于房屋体系时, 水暖管线可从梁中穿过, 降低结构空间占用成为可能, 并且腹板开孔型节点也便于加工制 作, 是一种值得推荐的新型节点形式. : 梁柱节点; 腹板开孔; 试验研究; 抗震性能; 延性; 脆性破坏 : TU391 : A : 0367- 623 ( 2006) 08- 1303- 03 E xperim en tal research on behaviors of connection of steel m om en t-resisting fram es w ith open ing on beam web L IBo, YANG Q ing-shan, RU Ji-p ing ( School of C ivil Engineer andA rchitecture, Beijing J iaotong Un iversity, Beijing 1000 , Ch ina, E-m ail: libo 77@ 163. com ) - Abs tract: A new type of beam-to-column connection, opening on beam w eb ( OBW ) connection, is intro- duced in th is paper. 12 fu l-l size beam-to-column connection specmi ens, includ ing three types of OBW con- nectionw ith d ifferent open ing configurations and one type of trad itional all-w elded connection, are tested under cyclic loading. Brittle w eld fractures occurred on the specmi ens w ith conventional all-w elded connection, w hich cannotm eet the ductile requ irement. While w ith open ing on beam w eb, spread of p lasticity w as found on the specmi en beam w ith OBW connection and its failur