双拼工字型钢板阻尼器滞回性能试验研究  

Experimental study on hysteretic behaviors of duplex assembled I-shaped steel panel dampers

作　　者：林煜 杨森[1] 郭正兴[1] 管东芝[1] Lin Yu;Yang Sen;Guo Zhengxing;Guan Dongzhi(School of Civil Engineering, Southeast University, Nanjing 210096, China)

机构地区：[1]东南大学土木工程学院

出　　处：《东南大学学报（自然科学版）》2019年第5期911-917,共7页Journal of Southeast University：Natural Science Edition

基　　金：“十三五”国家重点研发计划资助项目(2016YFC0701703);国家自然科学基金资助项目(51808109);江苏省自然科学基金资助项目(BK20180385)

摘　　要：为解决传统剪切型钢板阻尼器造价高、易出现面外屈曲和连接焊缝撕裂的问题,设计制作了一种双拼工字型钢板阻尼器.该阻尼器由Q235热轧H型钢开斜洞制成的2个槽形钢相背而拼形成,通过槽形钢腹板剪切变形耗能.采用拟静力试验,研究了5个双拼工字型阻尼器试件的滞回性能.结果表明:增加腹板宽度可提高阻尼器的承载和耗能能力,高且窄的开洞形式可提高阻尼器极限位移74.4%;无连接弧板的腹板约束形式可提高延性70%,超强系数至少达到 1.70 .双拼工字型钢板阻尼器能够有效限制耗能腹板的平面外变形,具有稳定的耗能能力,同时可避免焊缝破坏.A duplex assembled I-shaped steel panel damper (DAISPD) was designed to avoid the disadvantages of traditional shear steel panel dampers including high cost, easy out-of-plane deformation and premature weld failure. Based on Q235 hot-rolled H-beams, the DAISPD was assembled by two channel-like steels back to back with webs holed obliquely and dissipate energy through shear deformation. The pseudo-static tests for five specimens were carried out to investigate the hysteretic behavior of DAISPD. The results indicate that the increase of the web width can improve bearing capacity and energy dissipation capacity. With openings high and narrow, the ultimate displacement of the DAISPD can be increased by 74.4%. The web restraint form without a connection arc plate can increase the ductility by 70% and the over-strength coefficient reaches at least 1.70. DAISPD can restrain out-of-plane buckling deformation of webs. Thus, it has stable energy dissipation capacity and avoids weld damage.

关 键 词：剪切型钢板阻尼器 屈曲约束 双拼工字型 滞回性能 

分 类 号：TU352.1[建筑科学—结构工程] TU392.4