| 俯冲带板间地震竖向加速度谱的阻尼修正系数模型 |
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| 引用本文： | (张峻华,黄 斌.俯冲带板间地震竖向加速度谱的阻尼修正系数模型[J].世界地震工程,2023,39(2):082-97. |
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| 作者姓名： | (张峻华 黄 斌 |
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| 作者单位： | 山东建筑大学 土木工程学院,山东 济南 250000 |
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| 基金项目： | 国家自然科学基金项目(51878396)； |
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| 摘 要： | 我国台湾省和南海东部地区处于地质构造复杂和地震频发的俯冲带区域，这一地区的结构抗震设计影响着该地区的开发建设进程。为建立适用于该地区的俯冲带板间地震竖向加速度谱的阻尼修正系数模型，本文选用日本K-NET与KiK-net台网的3 552条俯冲带板间地震记录，分四类场地建立以阻尼比和谱周期为参数的阻尼修正系数模型，并分析其它未纳入模型的参数对误差的影响。结果表明：采用阻尼比对数的三次多项式表达式即可实现良好拟合；模型在短周期内的误差主要受场地效应与路径效应影响，在长周期和高阻尼比时误差主要受震源效应影响；分场地建立阻尼修正系数模型可有效降低场地效应产生的误差。本文的研究成果可用于求解俯冲带地区无震源效应与路径效应的竖向设计反应谱。
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| 关 键 词： | 俯冲带板间地震 竖向加速度谱 阻尼修正系数 残差标准差 |
Damping modification factor model for vertical acceleration response spectrum from subduction interface earthquake |
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| (ZHANG Junhua,HUANG Bin.Damping modification factor model for vertical acceleration response spectrum from subduction interface earthquake[J].World Information On Earthquake Engineering,2023,39(2):082-97. |
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| Authors: | (ZHANG Junhua HUANG Bin |
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| Institution: | School of Civil Engineering, Shandong Jianzhu University, Jinan 250000, China |
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| Abstract: | Chinese Taiwan and the eastern part of the South China Sea are in a subduction zone area with complex geological structures and frequent earthquakes, and the seismic design of the structure in this area affects the development and construction process of the South China Sea in China. In order to establish a damping modification factor(DMF)model for vertical acceleration response spectrum from subduction interface earthquakes in this region, 3552 records were collected from this type of earthquakes in Japanese from the K-NET and KiK-net and these records were divided into four groups according to the site conditions. A DMF model including damping ratio and spectral period parameters was developed for four types of sites, and the effects of source and path are not included in the model but error analysis were carried out. The results show that a good model fit can be achieved by using a cubic function of the damping ratio on the logarithm scale. The model errors of for the short periods are from the site and the path effects and the model errors for the long periods and large damping ratios are mainly from the source effect. The use of site effect can DMF model can effectively reduce the model errors. The result of this paper can be directly used to adjust the design vertical response spectrum without specified the source and path parameter. |
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| Keywords: | subduction interface earthquake vertical acceleration response spectrum damping modification factors residual standard deviation |
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