A study of calibrating seismic design response spectrum based on high-intensity ground motion records
Qian Liang, Bai Yunpeng, Xie Quancai, Zhang Xiaonan, Li Jilong, Wang Yuhuan · 2026
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Description
Qian Liang and five colleagues recalibrate the earthquake load curves that Chinese building design relies on, using records from genuinely destructive shaking. The design response spectrum tells engineers how hard a quake of a given strength can push a structure, and its three shaping values matter enormously. Their 2026 calibration drew on strong-motion records at intensity 7 and above on the Chinese scale. An improved differential evolution algorithm, with a hybrid mutation step, fitted the curve values faster and more tightly the longer it ran.
Comparisons with the current building code surfaced systematic gaps. The average site period for rock and hard-soil classes ran longer than the code allows, and it grew with shaking intensity, peaking above intensity 10. The platform value converged toward the code's number as intensity rose, while the decay index consistently exceeded the code's. The authors argue the code's spectrum deserves updating where their data disagrees.
Catalog record
| CREATOR | Qian Liang, Bai Yunpeng, Xie Quancai, Zhang Xiaonan, Li Jilong, Wang Yuhuan |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 40819 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |