| 震中矩对水平向能量持时的影响分析 |
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| 引用本文： | 赵艳,付丽艳,韩卫,张同伟,张国忠.震中矩对水平向能量持时的影响分析[J].佳木斯工学院学报,2008(5):630-632. |
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| 作者姓名： | 赵艳 付丽艳 韩卫 张同伟 张国忠 |
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| 作者单位： | 佳木斯大学建筑工程学院,佳木斯黑龙江154007 |
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| 基金项目： | 佳木斯大学科技基金项目（项目编号：L2008-074）. |
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| 摘 要： | 详细的分析了震中矩对持时的影响,其中持时是以70%能量持时为研究对象.利用美国强震记录,在Ⅱ类场地上,对震级和震中矩进行分组,研究在每一组内的平均能量持时,进而得出持时与震中矩之间的关系.通过研究发现,随着震中矩的增大,持时相应的变长,但是当震级较大时（7级）,持时有变短的趋势;同时震中矩对持时的影响在两水平方向上都是非常明显的,总体而言东西向的值要大于南北向的值,表现出较强的方向性.
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| 关 键 词： | 持时 震中矩 地震动 |
The Influence of Epicenter Distance to Horizontal Earthquake Ground Motion Duration |
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| Authors: | ZHAO Yan FU Li-yan HAN Wei ZHANG Tong-wei ZHANG Guo-zhong |
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| Affiliation: | (The College of Architecture and Civil Engineering,Jiamusi University,Jiamusi 154007,China) |
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| Abstract: | The influence of epicenter distance on earthquake ground motion duration is discussed based on American strong ground motion records.In study,70% energy duration delegates duration.It is notable for the influence of epicenter distance on earthquake ground motion duration through analysis.As a whole,the greater the epicenter distance,the longer the duration is.But,the duration turns short while the magnitude is bigger.In the other hand,duration of east-west direction is longer than south-north direction,so the duration changes as the direction changes. |
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| Keywords: | duration epicenter distance ground motion |
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