基于有限元的新型高延性角钢连接节点抗震性能评估  

FE-based seismic performance evaluation of new-type high ductile steel beam-to-column angle connections

作　　者：黄冀卓[1,2] 陈炜[1] 钟林[3] 

机构地区：[1]福州大学土木工程学院,福建福州350116 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510640 [3]汕头大学土木工程系,广东汕头515063

出　　处：《福州大学学报（自然科学版）》2013年第4期500-504,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51278125);华南理工大学亚热带建筑科学国家重点实验室开放基金资助项目(2012KB16)

摘　　要：探讨了一种新型高延性角钢连接节点的抗震性能.在普通双腹板顶底角钢连接节点的基础上,提出了一种新型高延性角钢连接节点,该新型节点将与梁相连的角钢分肢上的螺栓圆孔扩大成长圆孔.通过有限元分析,对采用常规圆孔的普通角钢节点和采用不同扩孔尺寸的一系列新型角钢节点在转动能力、延性、滞回曲线、耗能能力等方面的差异进行了比较.结果表明,扩孔后的新型节点具有更好的抗震性能.Seismic performance of a new-type high ductile steel beam-to-column angle connections is evaluated.Based on common top-seat angle connections with double web angles,a new-type angle connection is presented.For the new proposed angle connections,the bolt holes opening in angle legs connected with beam are slotted instead of conventional round.Using finite element method,one common angle connection and four new-type angle connections with different slotted size are analyzed and compared in terms of plastic rotational capacity,ductility,hysteresis loops,and energy dissipation factor.Results show that the presented new-type angle connections have better seismic behavior than common angle connections.

关 键 词：角钢 长圆孔 高延性 抗震性能 有限元 

分 类 号：TU391[建筑科学—结构工程]