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Simulation of Response Spectra of Far-Source Long-Period Ground Motion Based on the Response Spectrum Ratio

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Iranian Journal of Science and Technology, Transactions of Civil Engineering Aims and scope Submit manuscript

Abstract

In this study, a method for simulating the response spectra of far-source long-period ground motion, based on the response spectrum ratio model, was proposed. The model was proposed for the response spectrum ratio between far-source and near-fault strong ground motions, in the period range of 0.1 to 10.0 s. It is a function of period, magnitude, and distance. This study was evaluated using strong-motion records acquired from Japanese strong-motion seismograph networks of the Nation Research Institute for Earth Science and Disaster Prevention, consisting of two horizontal components of 24 earthquake records, and including 5719 sets of strong-motion records, which were used for regression analysis. The response spectrum ratio model was applicable for the magnitude range of 6.0 to 9.0, and a distance of up to 800 km. Fitting curve analysis was performed to study the variation in the response spectrum ratio with the period. The validity of the response spectrum ratio model was examined using detailed residual analysis, and comparison with earthquake records, the Chinese Code for seismic design of buildings (GB50011-2010), the Eurocode, the long-period acceleration design response spectrum, and two simulations of the long-period of response spectrum models. Furthermore, simulation of the response spectra of far-source strong ground motion based on the response spectrum ratio model was performed. The results demonstrated that the response spectrum ratio model correlates the far-source response spectrum and near-field response spectrum. The simulation of the response spectra of far-source long-period ground motion using the response spectrum ratio model and near-field response spectrum was efficient.

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Acknowledgements

The authors would like to thank the National Research Institute of Earth Science and Disaster Prevention for providing the strong-motion records.

Funding

This study was supported by the National Natural Science Foundation of China (52079072) and the Educational Commission of Hubei Province, China (Q20191210).

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Correspondence to Qi Zhang.

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Lin, Q., Peng, G., Zhang, Q. et al. Simulation of Response Spectra of Far-Source Long-Period Ground Motion Based on the Response Spectrum Ratio. Iran J Sci Technol Trans Civ Eng 47, 2985–2998 (2023). https://doi.org/10.1007/s40996-023-01079-w

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  • DOI: https://doi.org/10.1007/s40996-023-01079-w

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