- 摘 要
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（廣州大學土木工程學院， 廣州 510006）
［摘要］消能減震結構附加有效阻尼比計算一般采用基于能量的應變能法。相比能量，功率反映能量的耗散效率，具有瞬時特性，對于速度相關型消能器，風振設計時經(jīng)常要求計算功率，使用功率計算附加有效阻尼比將更加合理直接。推導了基于功率的附加有效阻尼比計算方法（功率計算方法），比較功率計算方法與應變能法的差異性，通過一個多層與一個超高層工程實例對功率計算方法與應變能法的計算效果進行研究。結果表明，應變能法計算結果較為保守，功率計算方法計算結果更符合實際。建議計算速度相關型消能器附加有效阻尼比時優(yōu)先采用功率計算方法。
［關鍵詞］消能減震結構； 附加有效阻尼比； 功率計算方法； 應變能法
中圖分類號：TU318-1文獻標識碼：A文章編號：1002-848X(2019)11-0109-06
Research on power calculation method of additional effective damping ratio
Zhou Yun, Shang Chenghao
(School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)
Abstract:Energy-based strain energy method is usually used to calculate the additional effective damping ratio of energy dissipation structures. Compared with energy, power reflects energy dissipation efficiency and has instantaneous characteristics. For speed-dependent energy dissipators, the calculation of power is often required in wind-induced vibration design. It is more reasonable and direct to use power to calculate additional effective damping ratio. The power calculation method of additional effective damping ratio was deduced. The difference between power calculation method and strain energy method was compared. The calculation effect of power calculation method and strain energy method was studied through a multi-layer and a super high-rise engineering example. The results show that the strain energy method is more conservative and the power calculation method is more practical. It is suggested that the power calculation method should be preferred when calculating the additional effective damping ratio of velocity-dependent dampers.
Keywords:energy dissipation structure; additional effective damping ratio; power calculation method; strain energy method
作者簡介：周云，博士，教授，Email:zhydxs@163.com。
