不同支撑形式铰接钢框架结构抗震性能试验研究  

Experimental Research on Seismic Performance of Pin-Connected Steel Frame Structures with Different Braces

作　　者：李然 舒赣平[3] 胡波 陈士通 LI Ran;SHU Ganping;HU Bo;CHEN Shitong(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Hebei Engineering Innovation Center for Traffic Emergency and Guarantee,Shijiazhuang 050043,China;School of Civil Engineering,Southeast University,Nanjing 211189,China;Department of Engineering Mechanics,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]河北省交通应急保障技术创新中心,石家庄050043 [3]东南大学土木工程学院,南京211189 [4]石家庄铁道大学工程力学系,石家庄050043

出　　处：《工业建筑》2023年第11期168-174,共7页Industrial Construction

基　　金：河北省青年科学技术基金(E2019210026);河北省高等学校科学技术研究项目(QN2021230);河北省省级科技计划资助(225676104H)

摘　　要：设计制作了两榀1∶2缩尺的双层单榀单跨铰接钢框架-支撑子结构,一榀为铰接钢框架-普通支撑子结构(FMB),另一榀为铰接钢框架-自复位耗能支撑子结构(FMD),对该两子结构进行了低周反复试验研究和对比分析。结果表明:加载过程中FMB的支撑发生面外失稳和屈曲破坏,梁-支撑节点域发生局部翘曲,结构几乎无耗能和复位性能;FMD中自复位耗能装置发挥耗能和自复位作用,其余各构件均处于弹性状态,加载结束后结构未发生破坏,具有较好的耗能能力且卸载后结构可自复位;与FMB相比,FMD具有相当的屈服承载力、更高的抗侧移能力、更大的延性和更强的耗能和自复位能力。Two 1∶2 scaled single-span pin-connected steel frame structures with two floors one span were designed and fabricated.One is pin-connected steel frame with common braces(FMB)as the comparison frame,and the other is pin-connected steel frame with self-centering energy dissipation braces(FMD).Low cycle reverse The experimental study and comparative analysis of the two frames under quasi-static loading were carried out.The results showed that the out-of-plane instability and buckling occured in FMB during the loading process,local warpage also occurred in the beam-brace connection zone.The FMB was almost no energy dissipation capacity or self-centering capability.Self-centering energy dissipation devices in FMD played the energy dissipation and self-centering function,and other components kept in the elastic.After loading,no damage occurred to the structure.The structure possessed good energy dissipation capability and could restored to its initial station after loading.Compared to FMB,FMD owned about the same yielding load,higher sidesway resistance ability,greater ductility,stronger energy dissipation and self-centering capacity.

关 键 词：自复位 耗能 铰接钢框架 抗震性能 试验研究 

分 类 号：TU391[建筑科学—结构工程] TU352.11