基于反应谱的地震动备选库建构方法

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (9) : 44-52.

论文

基于反应谱的地震动备选库建构方法

侯红梅 1，刘文锋 1，2

作者信息 +

A constructing method for ground motion alternative database based on response spectrum

HOU Hongmei1, LIU Wenfeng1,2

Author information +

文章历史 +

摘要

时程分析中选择合适的地震动记录至关重要。以地震动反应谱与抗震设计反应谱相一致为评价原则，比较反应谱一致性控制参数均方差和均值相对差值，提出分周期段—双频段选择地震动的方法；按设防烈度和场地特征周期分组，在反应谱全周期范围内，采用分周期段—双频段方法建构地震动备选库。当结构基本周期确定后，可直接使用备选库中相应周期段内的地震动记录进行时程分析，省去因结构周期变化需重新选择地震动的繁琐工作。研究表明：①分周期段—双频段方法在各周期段内选取的地震动记录效果较好；②分周期段—双频段方法建构地震动备选库具有可行性和优越性。

Abstract

It’s important to select suitable ground motion records in time history analysis. Based on the consistency of record response spectrum and design response spectrum, the controlling parameters of mean squared error and mean relative difference is compared, and the sectionalized-dual-band method of selecting ground motion records is proposed. According to the intensity of fortification and the period of site characteristic, the sectionalized-dual-band method is used to construct the ground motion alternative database in the whole period range of response spectrum. When the basic period of the structure is determined, the time history analysis can be carried out directly by using the ground motion records in the alternative database, thus the tedious work of re-selecting ground motion records can be eliminated as the variation of the structural period. It is shown that: the sectionalized-dual-band method has good effect on the selection of ground motion records in each period band; and the sectionalized-dual-band method has the feasibility and superiority to construct the ground motion alternative database.

导出引用

侯红梅 1，刘文锋 1，2. 基于反应谱的地震动备选库建构方法[J]. 振动与冲击, 2019, 38(9): 44-52

HOU Hongmei1, LIU Wenfeng1,2. A constructing method for ground motion alternative database based on response spectrum[J]. Journal of Vibration and Shock, 2019, 38(9): 44-52

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