A Spectral Shape-based Scalar Ground Motion Intensity Measure for Maximum and Cumulative Structural Demands

摘要

In this paper, a new spectral-shape-based scalar ground motion intensity measure (IM) to estimate maximum and cumulative demands is discussed. The parameter is based on the pseudo-acceleration response spectrum. In the paper it is shown that it is efficient with respect to the estimation of structural response. Moreover, it is better correlated with maximum and cumulative structural response of single degree of freedom (SDOF), and multi degree of freedom (MDOF) structures subjected to seismic records with different characteristics (ordinary, near-fault pulse-like and long-duration narrow-band), if compared with the most popular IMs. Finally, it is demonstrated that probabilistic seismic hazard analysis for the parameter proposed can be performed with already available tools.