摘要
提出了一种新型可更换连梁,在连梁中部设置O型钢板-黏弹性组合型阻尼器.进行了黏弹性阻尼器、O型钢板阻尼器以及组合型阻尼器的低周反复加载试验,结果表明组合型阻尼器具有很强的耗能能力和变形能力.提出了带组合型阻尼器的可更换连梁的结构设计方法,并对带该可更换连梁与带传统钢筋混凝土连梁的一个超高层结构在风荷载和地震作用下的反应进行了对比分析.分析结果表明,在风荷载和小震作用下,黏弹性阻尼器开始耗能,O型钢板阻尼器处于弹性状态;在大震作用下,O型钢板阻尼器屈服,与黏弹性阻尼器共同耗能.组合型阻尼器在风振和不同水准地震作用下均能发挥消能减震作用.带新型可更换连梁的结构具有比传统结构更好的抗风和抗震性能.
A new type of replaceable coupling beam(RCB)with O-shaped steel plate-viscoelastic combined damper at the mid span was proposed.The O-shaped steel plate damper,viscoelastic damper and combined damper were tested under low-cyclic loading.The test results show that the combined damper has strong energy-dissipation and deformation capacity.The design method for the structure installed with RCBs was proposed.The responses of a super-tall structure with RCBs under the wind and earthquakes were compared with those of the structure with traditional RC coupling beams.The results show that,under the wind and minor earthquake,viscoelastic dampers dissipate energy,while O-shaped steel plate dampers keep in elastic state.Under the rare earthquake,O-shaped steel plate dampers yield and dissipate energy together with viscoelastic damper.The combined dampers play the role of dissipating energy and reducing the response under the wind and the earthquake with different level of intensity.The structure with RCBs exhibits better wind resistance and earthquake resistance capacity than the traditional structures.
作者
蒋欢军
黄有露
李恺轩
JIANG Huanjun;HUANG Youlu;LI Kaixuan(State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2020年第1期26-35,共10页
Journal of Hunan University:Natural Sciences
基金
国家重点研发计划项目(2017YFC1500701)~~
关键词
组合型阻尼器
可更换连梁
设计方法
抗震性能
combined damper
replaceable coupling beam
design procedure
seismic performance
