建筑结构

2019, v.49(S2) 474-478

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附加金属消能支撑减震结构阻尼比算法探讨
Discussion on the damping ratio algorithm of structure with metal energy dissipation brace

杨凯;丁孙玮;郑超凡;郭鑫;涂田刚;
Yang Kai;Ding Sunwei;Zheng Chaofan;Guo Xin;Tu Tiangang;Shanghai SRIM Vibration Control Technology Co., Ltd.;Shanghai Engineering Research Center of Earthquake Energy Dissipation;

摘要(Abstract):

金属消能器因其构造简单、性能稳定、造价低廉等特点而被广泛应用在结构抗震中。目前,抗震规范中关于金属消能器耗能效果的评估尚不完善,不同计算方法得到的附加阻尼比数值差别较大。结合日本相关研究成果,论证了按照稳态响应理论计算容易高估金属消能器的耗能效果,并结合一个工程案例,阐述了适用于金属类消能器的附加阻尼比计算方法,对后续工程具有一定的借鉴意义。
Metal energy dissipation devices are widely used in seismic resisting structures for its advantages of simple mechanism, better performance and lower cost. At present, the evaluation of energy dissipation effect of metal energy dissipation device is not well defined. The additional damping ratio values obtained by different calculation methods vary greatly. Based on the research of Japan, this paper demonstrates that it is easy to overestimate the energy dissipation effect of metal energy dissipation device based on the steady-state response theory, and expounds an appropriate method of calculating the additional damping ratio for metal energy dissipation device based on an engineering case, having certain reference significance to the subsequent project.

关键词(KeyWords): 金属消能器;附加阻尼比;延性系数;减震结构
metal energy dissipation device;additional damping ratio;ductility factor;energy dissipation structure

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作者(Author): 杨凯;丁孙玮;郑超凡;郭鑫;涂田刚;
Yang Kai;Ding Sunwei;Zheng Chaofan;Guo Xin;Tu Tiangang;Shanghai SRIM Vibration Control Technology Co., Ltd.;Shanghai Engineering Research Center of Earthquake Energy Dissipation;

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