（1 广州大学土木工程学院， 广州 510006； 2 广东省建筑设计研究院， 广州 510145；3 广州大学工商管理学院， 广州 510006）

［摘要］《建筑抗震设计规范》(GB 50011—2010)及《建筑消能减震技术规程》(JGJ 297—2013)给出的消能减震结构设计中附加有效阻尼比取值计算方法为包络计算方法，使得计算结果偏于保守，计算精度相对较低。针对以上问题，提出了基于应变能法的附加有效阻尼比时变计算方法（时变法），通过消能减震实际工程分析验证了该计算方法的合理性与精确性。结果表明，“时变法”计算所得附加有效阻尼比结果合理，更加吻合实际情况，具有更高精度。

［关键词］应变能法； 附加有效阻尼比； 消能减震； 时变计算方法

中图分类号：TU318-1文献标识码：A文章编号：1002-848X(2019)11-0103-06

Research on time-varying calculation method of additional effective damping ratio based on strain energy method

Zhou Yun1, Ou Tong2, Xu Xin1,3, Shang Chenghao1

(1 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China;2 The Institute of Architecture Design and Research of Guangdong, Guangzhou 510145, China；3 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)

Abstract:The method for calculating the additional effective damping ratio in the design of energy dissipation structures given in Code for seismic design of buildings (GB 50011—2010) and Technical specification for seismic energy dissipation of buildings (JGJ 297—2013) is the envelope calculation method. The result is conservative and the calculation accuracy is relatively low. In view of the above problems, time-varying calculation method of additional effective damping ratio based on strain energy method was presented. The rationality and accuracy of this calculation method were verified by practical energy-dissipated engineering. The results show that the additional effective damping ratio calculated using time-varying method is reasonable and the calculation results are more consistent with the actual situation and the calculation accuracy is higher.

Keywords:strain energy method; additional effective damping ratio; energy dissipation; time-varying calculation method

作者简介：周云，博士，教授，Email:zhydxs@163.com。