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

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (5) : 143-148.

论文

丁艳琼1，李杰2,3，彭勇波4

作者信息 +

Engineering random ground motion database for recorded and simulated ground motions

DING Yanqiong1, LI Jie2，3, PENG Yongbo4

Author information +

文章历史 +

摘要

收集了来自156次地震的共计7778条水平加速度记录。分别采用基于能量分布和震级-距离的地震动记录聚类分析方法，将7778条水平加速度记录划分为12组，作为地震动记录数据库的基础数据。基于工程随机地震动的物理模型，采用窄带波群叠加方法合成了不同场地类别、震级和传播距离下的24组模拟地震动，包括100条每组的12个小样本组和300条每组的12个大样本组，共计4800条模拟地震动时程，作为模拟地震动数据库的基础数据。利用聚类分组后的地震动记录和各分组模拟地震动，开发了基于Windows系统的工程随机地震动数据库系统，实现了地震动的检索以及时程、反应谱和相关地震信息的可视化及数据下载。

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.

导出引用

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[J]. Journal of Vibration and Shock, 2021, 40(5): 143-148

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