【摘要】 根据黏弹性阻尼器的特点和抗震规范的要求,分别提出了用于黏弹性阻尼器减震结构抗震分析的弹性及弹塑性需求谱,前者是基于黏弹性阻尼器减震结构等效阻尼比的简化计算公式及规范规定的反应谱;后者是基于修正的V id icRμ-μ-T关系。在此基础上,借助模态推覆分析,提出了可以考虑高阶振型影响的黏弹性阻尼器消能减震结构体系的能力谱分析方法,并对一8层钢筋混凝土消能减震框架结构进行了"中震不坏,大震可修"性能水准下的抗震分析。算例结果表明,采用该方法分析黏弹性阻尼器减震结构体系是可行的、有效的。更多还原

【Abstract】 According to the characteristics of viscoelastic damper(VED) and the requirements of the seismic code,the elastic and inelastic demand spectra are proposed respectively.The former is based on the simplified formulas of equivalent damping ratio and the response spectrum of the code.The latter is based on the modified R_μ-μ-T relationship proposed by Vidic.Furthermore,the performance-based approach using capacity spectrum method is presented for analyzing the buildings with VEDs and higher mode effects can be considered by virtue of modal pushover analysis.Finally,the analyses of an eight-storey reinforced concrete frame with or without VED are performed under two performance levels.The first level is that the building has no damage under moderate earthquakes and the second one is that the building is repairable under rarely occurring earthquakes.The results indicate that the proposed approach is viable and effective for performance evaluation of buildings with VEDs.更多还原