| 竖向与水平向地震动加速度反应谱比特性分析 |
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| 引用本文： | 李恒,秦小军.竖向与水平向地震动加速度反应谱比特性分析[J].地震工程与工程振动,2010,30(1). |
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| 作者姓名： | 李恒 秦小军 |
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| 作者单位： | 1. 中国地震局地震研究所,湖北,武汉,430071;武汉地震工程研究院,湖北,武汉,430071
2. 中国地震局地震研究所,湖北,武汉,430071 |
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| 基金项目： | 国家自然科学基金项目(40674019);;中国地震局地震研究所基金项目(IS200926044) |
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| 摘 要： | 本文采用全球范围128次地震的3235组三分量强地面运动记录,分析了其加速度竖向分量反应谱与水平分量反应谱的比值(V/H)的总体特征,研究了V/H随震级、震中距、局部场地条件和震源机制的变化关系。研究结果表明:(1)场地越硬,长周期段V/H越大,短周期段则相反;(2)震级越大,长周期段V/H越大,短周期段变化不明显;(3)短周期段V/H随震中距增大而减小;(4)对于大震(M7),长周期段V/H随震中距增大而减小;而对于中强震(M7),比值在近场(R60km)随震中距增加而增大,在远场则随震中距增加而减小;(5)V/H与震源机制也有一定的关系。
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| 关 键 词： | 加速度反应谱 竖向地震动 场地条件 震源机制 |
Study on characteristics of vertical to horizontal acceleration response spectral ratio |
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| LI Heng,QIN Xiaojun.Study on characteristics of vertical to horizontal acceleration response spectral ratio[J].Earthquake Engineering and Engineering Vibration,2010,30(1). |
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| Authors: | LI Heng QIN Xiaojun |
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| Institution: | 1.Institute of Seismology;China Earthquake Administration;Wuhan 430071;China;2.Wuhan Institute of Earthquake Engineering;China |
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| Abstract: | In this paper,3225 strong ground motion records from 128 earthquakes are used to calculate the ratios of the vertical to horizontal acceleration response spectra(V/H).The records are divided into groups according to site condition,epicentral distance,magnitude and focal mechanism.This study focuses on the relationship between V/H and these factors.The results show that:(1) the harder the site is,the larger the V/H in long-period range becomes,and the V/H in short-period range is opposite.(2) The greater the... |
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| Keywords: | acceleration response spectra vertical ground motion site condition focal mechanism |
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