ABSTRACT

Correlating different intensity measures (IMs) enables the joint consideration of multiple IMs in various performance-based earthquake engineering applications, such as ground motion selection. The correlations between the spectral input energy and spectral accelerations have not been previously examined. This study develops a correlation model quantifying the uncertainties due to GMPE selection and a finite sample size. The results show a strong correlation between the spectral amplitudes at the same period, and the correlation decreases as the period difference increases. With the proposed model, ground motion characteristics reflected by the input energy can be explicitly considered in performance-based earthquake engineering applications.

摘要

关联不同的强度测量 (IM) 可以在各种基于性能的地震工程应用（例如地面运动选择）中联合考虑多个 IM。以前没有研究过光谱输入能量和光谱加速度之间的相关性。本研究开发了一个相关模型，用于量化由于 GMPE 选择和有限样本量引起的不确定性。结果表明同一周期的谱振幅之间存在很强的相关性，并且相关性随着周期差的增大而减小。使用所提出的模型，可以在基于性能的地震工程应用中明确考虑由输入能量反映的地震动特性。