| 准稳态地震动模拟和场地放大率的计算 |
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| 引用本文： | 郝洪,张社荣.准稳态地震动模拟和场地放大率的计算[J].地震工程与工程振动,1999,19(4):33-42. |
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| 作者姓名： | 郝洪 张社荣 |
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| 作者单位： | 1. 新加坡南洋理工大学土木与结构工程学院
2. 天津大学水资源与港湾工程系中国天津 300072 |
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| 摘 要： | 本文讨论的是没有强震资料的地区在做地震动模拟时遇到的一些问题。模拟的地震动时程曲线基于统计的衰减数据，如地面加速度峰值或速度反应谱。由于这些数据并不包含有关地震频率成分的信息，要使用相同的统计反应谱对地震动可以随机模拟为稳态或准稳态的设想加以证明。
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| 关 键 词： | 地震 地震动模拟 地震工程 场地放大率 |
| 文章编号： | 1000-1301(1999)04-0033-10 |
QUASI-STATIONARY GROUND MOTION SIMULATION AND SITE AMPLIFICATION CALCULATION |
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| HAO Hong,ZHANG She-rong.QUASI-STATIONARY GROUND MOTION SIMULATION AND SITE AMPLIFICATION CALCULATION[J].Earthquake Engineering and Engineering Vibration,1999,19(4):33-42. |
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| Authors: | HAO Hong ZHANG She-rong |
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| Abstract: | This paper discusses some problems encountered in simulating earthquake ground motions for a region where no strong motion data are available. Ground motion time histories aresimulated based on statistical attenuation data such as peak ground acceleraton or velocity re-spouse spectrum. Since these data do not contain any information on ground motion frequencycontents, it is demonstrated that ground motions can be stochastically simulated as stationary orquasi -stationary by using the same statistical response spectrum. It also shows that the time histo-ries obtained by analysing the responses of a layered soft soil site differ considerably if differentwave types are assumed. The traditionally used SH wave assumption usually resulting insmaller local site ampliflcation effects as compared to the surface wave assumption. A methodof simulating quasi-stationary ground motion is presented. Numerical examples are given formotions simulated by assuming either stationary or quasi-stationary, which represents SH orthe combined SH and Love waves, respectively. They demonstrate that although the simulatedmotions are all compatible with the same statistical data, using different frequency contents andassuming different wave types affect the simulated motions significantly. |
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| Keywords: | quasi-stationary ground motion simulation |
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