Seismic Performance and Analysis
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Abstract
Abstract
Abstract The seismic design response spectrum is a vital parameter for determining the potential seismic load of the engineering structure. Differential evolution algorithm (DE) with a novel hybrid mutation operator is utilized to calibrate the spectral parameters in order to enhance iteration efficiency. This study calibrates the seismic design response spectrum for China based on the Chinese seismic intensity scale and compares the results with the Code for Seismic Design of Buildings (CSDB2010).The calibration spectra are based on strong ground motion records with destructive power exceeding the Chinese seismic intensity 7 and above. The characteristics of the calibration spectral parameters are analyzed and subsequently compared with the design spectra of the Code for Seismic Design of Buildings (CSDB2010). It is found that: Increasing the number of iterations can enhance the fitting goodness of DE between the calibration spectrum and the record response spectrum. The average site characteristic period ( T g ) for rock and hard soil site conditions (Class I and II) is greater than the T g specified in CSDB2010. The average T g for intensity 10 + is greater than the average T g for intensity 7, 8, and 9. T g increases with the seismic intensity. The average spectra platform value ( β max ) from this study gradually approaches the β max in CSDB2010 as the intensity increases. The average attenuation index ( γ ) at different intensities of this study is greater than γ in CSDB2010.
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@article{Liang2026study,
title = {A study of calibrating seismic design response spectrum based on high-intensity ground motion records},
author = {Qian Liang and Bai Yunpeng and Quancai Xie and Xiaonan Zhang and Li Jilong and Yue Wang},
journal = {Scientific Reports},
year = {2026},
doi = {10.1038/s41598-026-58966-1},
url = {https://doi.org/10.1038/s41598-026-58966-1}
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