阻尼指数对黏滞阻尼器减震结构附加阻尼比影响研究OACSTPCD
Study on Effect of Damping Exponent on Additional Damping Ratio of Structures with Viscous Dampers
以应变能法为依据,推导出中震附加阻尼比与小震附加阻尼比的比值公式.以一幢5层框架结构为例,阻尼器采用2种不同的连接方式,进行弹性时程和弹塑性时程分析,采用规范时程法和累积能量比法计算附加阻尼比,得到不同阻尼指数和不同连接方式时的附加阻尼比变化规律.研究表明:当阻尼器与结构直接连接时,中震附加阻尼比与小震附加阻尼比的比值与推导公式计算结果吻合;当阻尼器与结构采用悬臂墙连接时,阻尼指数取0.6～0.7时可得到更大的附加阻尼比;减震结构宜取中震附加阻尼…查看全部>>
Based on the strain energy method,this paper derives the formula of the additional damping ratio under moderate earthquakes to the additional damping ratio under frequent earthquake.Taking the example of one 5-story frame structure,dampers are connected in 2 different ways to the structure.Elastic and elastic-plastic time-history analysis are proceed.The code time-history method and the accumulative energy ratio method are used to calculate the additional da…查看全部>>
段成刚;雷健;杨磊
中国建筑西北设计研究院有限公司,西安 710018中国建筑西北设计研究院有限公司,西安 710018中国建筑西北设计研究院有限公司,西安 710018
黏滞阻尼器阻尼指数附加等效阻尼比规范时程法累积能量比法
viscous damperdamping exponentadditional equivalent damping ratiocode time-history methodaccumulative energy ratio method
《结构工程师》 2023 (6)
78-87,10
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