刘文锋, 陈贡联. 结构抗震性态谱的确定方法[J]. 工程力学, 2008, 25(2): 160-167.
引用本文: 刘文锋, 陈贡联. 结构抗震性态谱的确定方法[J]. 工程力学, 2008, 25(2): 160-167.
LIU Wen-feng, CHEN Gong-lian. DETERMINATION FOR PERFORMANCE SPECTRUM OF ASEISMATIC BUILDINGS[J]. Engineering Mechanics, 2008, 25(2): 160-167.
Citation: LIU Wen-feng, CHEN Gong-lian. DETERMINATION FOR PERFORMANCE SPECTRUM OF ASEISMATIC BUILDINGS[J]. Engineering Mechanics, 2008, 25(2): 160-167.

结构抗震性态谱的确定方法

DETERMINATION FOR PERFORMANCE SPECTRUM OF ASEISMATIC BUILDINGS

  • 摘要: 为了克服反应谱无法反映性能目标对地震的需求,提出了性态谱的新概念。以地震地面运动数字记录为输入,计算单自由度体系最大地震加速度的统计平均值。在三维坐标中,根据性能目标,建立地震需求和结构周期、弹塑性状态的函数关系。获取具有统计意义的、按照地震波分类的弹性和弹塑性性态谱,研究了性态谱特征和谱曲线规律,拟合了弹性和弹塑性性态谱的设计公式,并对拟合公式进行了验证。性态谱为多目标抗震性能设计提供了新途径。

     

    Abstract: The response spectrum is unable to reveal the aseismatic demands under the performance objectives. A new performance spectrum is thusly proposed. The statistical average values of maximum acceleration responses of SDOF systems subjected to earthquake ground motions are investigated. According to the performance objectives, the functional relations among aseismatic demands, structural period and elastic-plastic levels are established under three-dimensional coordinate system. The elastic and elastic-plastic performance spectrums which have significance under the different groups of earthquake records are obtained. The characteristics of performance spectrum and the laws of performance spectrum curves are studied. The fitted formula for aseismatic design are derived and tested by theoretical formula. A new analytical way using the performance spectrum is provided for multi-objective performance-based aseismatic design.

     

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