| 地震动强度及频谱特征对场地地震反应分析结果的影响. |
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| 引用本文： | 兰景岩,吕悦军,刘红帅.地震动强度及频谱特征对场地地震反应分析结果的影响.[J].震灾防御技术,2012,7(1):37-45. |
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| 作者姓名： | 兰景岩 吕悦军 刘红帅 |
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| 作者单位： | 1. 中国地震局地壳应力研究所,北京,100085
2. 中国地震局工程力学研究所,哈尔滨,150080 |
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| 基金项目： | 中央级公益性科研院所基本科研业务专项（ZDJ2012-12） |
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| 摘 要： | 通过收集整理235个实际钻孔资料并建立了2820个计算工况,运用一维波动等效线性化地震反应分析方法,基于不同类别场地条件,研究在不同强度、频谱特性的地震动输入形式下,场地条件对地表地震动参数影响,重点考察地表峰值加速度的变化特征及规律,并对计算结果进行了统计回归分析,给出了不同场地类别条件下地表峰值放大倍数的一般经验值.由于我国现行抗震设计规范中,没有考虑地震烈度或地震动强度对设计反应谱的影响,也没有考虑地震动频谱特性对地表峰值的影响,因此,本文的研究成果可为未来修订抗震设计规范提供参考依据.
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| 关 键 词： | 场地条件 地震反应分析 地震动输入 强度及频谱特性 |
| 收稿时间： | 2011/10/12 0:00:00 |
Influence of Intensity and Frequency of Ground Motion on Site Earthquake Response |
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| Lan Jingyan,Lu Yuejun and Liu Hongshuai.Influence of Intensity and Frequency of Ground Motion on Site Earthquake Response[J].Technology for Earthquake Disaster Prevention,2012,7(1):37-45. |
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| Authors: | Lan Jingyan Lu Yuejun and Liu Hongshuai |
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| Institution: | 1) Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100085, China 2) Institute of Engeering Mechanics, China Earthquake Administration, Haerbin 150080, China |
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| Abstract: | Based on 235 soil profiles of engineering sites to build 2820 computing calculating models, the effect of site condition on surface ground motion parameters was studied by using the one-dimensional equivalent linear method of soil seismic response on the wave motion mode. This study focuses on the varying characteristic and rules of Peak Ground Motion Acceleration under different inputs with intensity and spectrum characters. And then the statistic regression analysis for the results was performed, and the empirical value of magnification factor for Surface Peak was obtained under different kinds of site condition. In the current seismic code of China, the effect on both ground intensity in design spectrum and frequency of ground motion in peak acceleration has not been taken into consideration yet. So, the results of this paper will provide certain reference for revising the seismic code in future. |
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| Keywords: | Site condition Earthquake response analysis Earthquake ground motion input Intensity and frequency of ground motion |
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