| 关于地震烈度物理标准研究的若干思考 |
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| 引用本文： | 郝敏,谢礼立,徐龙军.关于地震烈度物理标准研究的若干思考[J].地震学报,2005,27(2):230-234. |
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| 作者姓名： | 郝敏 谢礼立 徐龙军 |
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| 作者单位： | 1) 中国哈尔滨150090哈尔滨工业大学土木工程学院2) 中国哈尔滨150080中国地震局工程力学研究所 |
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| 基金项目： | 高等学校博士学科点专项科研项目，黑龙江省自然科学基金 |
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| 摘 要： | 自从现代地震学形成以来， 人们一直沿用地震烈度来度量地震的破坏后果和破坏程度， 地震工程师也致力于给地震烈度赋以恰当的物理量， 一方面旨在解释地震的破坏作用， 同时也希望能用这个物理量来代表地震对结构的一种输入荷载， 以供工程抗震设计使用. 这就是研究ldquo;地震烈度物理标准rdquo;工作的任务. 但是由于不同结构的破坏机理很不相同， 甚至同一类结构由于层高、 使用的材料以及所在场地的差别， 即使在同一地震作用下， 其震害也会有很大的差异. 此外， 导致结构破坏的地震动因素也十分复杂， 绝不限于地震动峰值一个因素. 因此本文指出， 新的烈度标准应不仅能反映各种结构的具体特点， 还应在研究地震动幅值参数的同时进一步考虑与地震动能量有关的参数， 特别是针对不同结构应采用不同的地震动参数.
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| 关 键 词： | 地震烈度 地震的破坏作用 震害 地震烈度物理标准 地震动参数 |
| 文章编号： | 0253-3782(2005)02-0230-05 |
| 修稿时间： | 2004年3月15日 |
SOME CONSIDERATIONS ON THE PHYSICAL MEASURE OF SEISMIC INTENSITY |
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| Hao Min,Xie Lili,Xu Longjun.SOME CONSIDERATIONS ON THE PHYSICAL MEASURE OF SEISMIC INTENSITY[J].Acta Seismologica Sinica,2005,27(2):230-234. |
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| Authors: | Hao Min Xie Lili Xu Longjun |
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| Abstract: | The study on seismic intensity can be traced prior to the time that modern seismology was established. In its early stage the seismic intensity was designed to serve as a measure in scaling the severity of earthquake damage to civil engineering and environmental structures. Also the seismic intensity is usually assigned by engineers and seismologists with one or two characteristic parameters of earthquake ground motions to reflect earthquake damage potential so as to be able to serve as an input earthquake load for seismic design of structures. So choosing a proper parameter to reflect the action of seismic intensity is the main objective of the research on physical measure of seismic intensity. However, since various kinds of structures have quite different damage mechanisms there will exist great differences in damages to different structures located at the same area during the same earthquake. Particularly, in some cases, quite different damages have happened even to the structures of same kind due to many other factors such as different construction materials, different configurations or on the different types of sites where structures located. In addition, the ground motion parameters, which result in damage to structures, are not the single peak value of ground motion. Hence, this paper emphasizes that the research on new physical measure of seismic intensity should not only consider the structural characteristics but also take into account other parameters such as duration, energy of ground motion and so on. In particular, as the physical measures of intensity, different ground motion parameter should be adopted for different structures. |
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