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(1 天津大學(xué)建筑工程學(xué)院，天津 300072；2 中國(guó)建筑科學(xué)研究院，北京 100013；3 廈門合道工程設(shè)計(jì)集團(tuán)有限公司，廈門 361004)

［摘要］對(duì)于非比例阻尼線性體系，可以采用基于反應(yīng)譜的復(fù)振型完全平方組合(CCQC)法和復(fù)振型平方和開方(CSRSS)法，而目前各國(guó)規(guī)范采用的仍是基于實(shí)模態(tài)的強(qiáng)迫解耦法。通過算例對(duì)復(fù)振型組合方法和強(qiáng)迫解耦法的誤差及其與非比例阻尼特征指數(shù)的關(guān)系進(jìn)行分析比較，并提出非比例阻尼線性體系復(fù)振型組合方法和強(qiáng)迫解耦法的適用范圍。

［關(guān)鍵詞］非比例阻尼;復(fù)振型;強(qiáng)迫解耦法;非比例阻尼特征指數(shù)

中圖分類號(hào)：TU311-4文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：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

*建設(shè)部專題項(xiàng)目：基于結(jié)構(gòu)動(dòng)力剛度的建筑抗震設(shè)計(jì)(2007年31號(hào))。

作者簡(jiǎn)介:張樹傳,博士研究生，高工, Email: zhangsc@hordor.com。

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