Engineering random ground motion database for recorded and simulated ground motions
DING Yanqiong1, LI Jie2，3, PENG Yongbo4
1.College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling 712100, China;
2.College of Civil Engineering, Tongji University, Shanghai 200092, China;
3.State Key Lab of Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;
4.Shanghai Institute of Disaster Prevention and Relief, Tongji University, Shanghai 200092, China
Abstract：Seven thousand seven hundred and seventy eight recorded horizontal accelerations from one hundred and fifty six earthquakes were collected and analyzed. The recorded ground motions are divided into twelve groups using the method of cluster analysis, based on energy distribution and magnitude-distance, respectively. The grouped ground motions are used to build the database of recorded ground motions. The superposition method of narrow-band wave groups is used to simulate stochastic ground motions. Twenty four groups of ground motions, including twelve small groups and twelve large groups, which are different in site type, magnitude and propagation distance, are simulated based on the physical model of stochastic earthquake ground motions for engineering purpose. There are one hundred simulated ground motions in each group of small groups, and three hundred simulated ground motions in each group of large groups. The four thousand eight hundred simulated ground motions are used to build the database of simulated ground motions. The Windows-based database of stochastic earthquake ground motions for engineering purpose is developed using the recorded ground motions and simulated ground motions. The database achieves the following functions: searching ground motions, visualization and downloading of ground motion time histories, response spectra and related information of the earthquake ground motion.
丁艳琼1，李杰2,3，彭勇波4. 面向地震动记录和模拟地震动的工程随机地震动数据库研究[J]. 振动与冲击, 2021, 40(5): 143-148.
DING Yanqiong1, LI Jie2，3, PENG Yongbo4. Engineering random ground motion database for recorded and simulated ground motions. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(5): 143-148.
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