(1 天津大学建筑工程学院，天津 300072；2 中国建筑科学研究院，北京 100013；3 厦门合道工程设计集团有限公司，厦门 361004)

［摘要］对于非比例阻尼线性体系，可以采用基于反应谱的复振型完全平方组合(CCQC)法和复振型平方和开方(CSRSS)法，而目前各国规范采用的仍是基于实模态的强迫解耦法。通过算例对复振型组合方法和强迫解耦法的误差及其与非比例阻尼特征指数的关系进行分析比较，并提出非比例阻尼线性体系复振型组合方法和强迫解耦法的适用范围。

［关键词］非比例阻尼;复振型;强迫解耦法;非比例阻尼特征指数

中图分类号：TU311-4文献标识码：A文章编号：1002-848X(2011)05-0063-05

Discussion on application scope of mode combination method for non-classically damped linear system

Zhang Shuchuan^1,3, He Yu′ao¹, Wang Yayong²(1 College of Civil Engineering, Tianjin University, Tianjin 300072, China; 2 China Academy of Building Research, Beijing 100013,China; 3 Xiamen Hordor Architecture & Engineering Design Group Co.,Ltd., Xiamen 361004,China)

Abstract:For non-classically damped linear system, the complex mode complete quadratic combination (CCQC) method and complex mode square root of sum of squares (CSRSS) method based on response spectra can be adopted. And in overseas seismic design codes, the forced decoupling method based on real mode is still adopted. The relation with index of damping non-proportionality and the errors of complex mode combination methods and forced decoupling method were analyzed and compared. The application scope of complex mode combination methods and forced decoupling method for non-classically damped linear system were discussed.

Keywords:non-classically damping; complex mode; forced decoupling method; index of damping non-proportionality

*建设部专题项目：基于结构动力刚度的建筑抗震设计(2007年31号)。

作者简介:张树传,博士研究生，高工, Email: zhangsc@hordor.com。

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