This study aimed at proposing a new ground motion scaling method for precise spectral matching between the response accelerations and the standard design spectrum regarding the normalization procedure. In this method, the dispersion in acceleration and displacement responses were decreased significantly. Moreover, 11 parameters were used for normalizing response accelerations, including peak ground acceleration, peak ground velocity, peak ground displacement, Arias intensity, Housner intensity, cumulative absolute velocity, maximum incremental velocity, energy index, acceleration spectrum intensity, velocity spectrum intensity, and specific energy density. Three sets of non-pulse-like, near-field pulse-like and non-pulse-like long-duration ground motions were taken into account to investigate the effect of earthquake characteristics on normalizing parameters. Hence, by performing sensitivity analysis, suitable parameters were determined for normalizing response accelerations. Statistical results illustrated that normalizing response accelerations to acceleration spectrum intensity, Housner intensity, and peak ground displacement led to minimum dispersion at acceleration-sensitive, velocity-sensitive, and displacement-sensitive regions, respectively. Moreover, the results showed that suitable normalizing parameters could be determined considering the period of vibration. It was concluded that normalizing response accelerations and scaling of them could lead to appropriate spectral matching and low dispersion. Finally, drift dispersion for four, eight, and twelve-story steel special concentrically braced frame structures under nonlinear fiber-element time-history analysis was evaluated carefully. The results indicated that the inter-story drift dispersion decreased acceptably in all structures.

中文翻译：

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关于归一化方法的光谱加速度匹配过程

这项研究旨在提出一种新的地面运动缩放方法，以在响应加速度和有关标准化程序的标准设计频谱之间进行精确的频谱匹配。在这种方法中，加速度和位移响应的离散度显着降低。此外，使用11个参数对响应加速度进行归一化，包括峰值地面加速度，峰值地面速度，峰值地面位移，Arias强度，Housner强度，累积绝对速度，最大增量速度，能量指数，加速度谱强度，速度谱强度和比能量密度。三套非脉冲状 考虑了近场脉冲状和非脉冲状长持续时间地震动，以研究地震特征对归一化参数的影响。因此，通过执行灵敏度分析，可以确定合适的参数以标准化响应加速度。统计结果表明，对加速度频谱强度，Housner强度和地面最大位移进行响应加速度的归一化分别导致加速度敏感，速度敏感和位移敏感区域的色散最小。此外，结果表明，考虑振动周期可以确定合适的归一化参数。结论是归一化响应加速和缩放比例会导致适当的频谱匹配和低色散。最后，仔细评估了四，八和十二层钢特殊同心支撑框架结构在非线性纤维单元时程分析下的漂移弥散。结果表明，层间漂移离散度在所有结构中均可接受地降低。