| 俯冲带板内地震竖向位移谱阻尼修正系数模型研究 |
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| 引用本文： | 王本三,靳羽阳,刘名吉.俯冲带板内地震竖向位移谱阻尼修正系数模型研究[J].世界地震工程,2022,38(1):175-189. |
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| 作者姓名： | 王本三 靳羽阳 刘名吉 |
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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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| 摘 要： | 基于日本K-NET和KiK-net台网中4695条俯冲板内地震记录的竖向分量,建立了位移谱阻尼修正系数(DMF)模型.采用基于场地周期的场地分类方法,并通过固定效应法推导出模型系数.该DMF模型考虑了谱周期、阻尼比和场地条件的影响,可以用来调整与震源和距离无关的设计反应谱.利用阻尼比对数的二次方程式对原数据进行拟合回归...
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| 关 键 词： | 阻尼修正系数 竖向分量 俯冲带板内地震 位移谱 随机效应模型 |
Study on damping modification factor model for vertical displacement spectrum from subduction slab earthquakes |
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| WANG Bensan,JIN Yuyang,LIU Mingji.Study on damping modification factor model for vertical displacement spectrum from subduction slab earthquakes[J].World Information On Earthquake Engineering,2022,38(1):175-189. |
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| Authors: | WANG Bensan JIN Yuyang LIU Mingji |
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| Institution: | School of Civil Engineering, Shandong Jianzhu University, Jinan 250000, China |
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| Abstract: | The vertical components of 4695 records obtained by the K-NET and KiK-net stations from subduction slab earthquakes in Japan were used to develop a model of damping modification factor（DMF）for displacement spectrum. Site class based on site period was used as the site response parameter and a fixed effects method was used to derive the model coefficents. The DMF model accounts for the effects of spectral period，damping ratio and site conditions and the model can be used to adjust the design response spectrum not associated with earthquake source and distance parameters.We used quadratic function of the damping ratio in the logarithm scale to fit and regress the original data. Next，we used a random effects model to separate the within-event，between-event residual and to evaluate the effects of source，pathandsite parameters. The distributions of residual suggest that the use of magnitude and focal depth can improve the DMF modeland the use of source distance can also improve the DMF model performance. These analyses suggested that the source effect on the DMF model is less than the path effect whereas the site effect is betweenthe source and the path effects. When the period is less than 1.1s，the error caused by the site effect is greater than the error caused by the source effect；after 1.1s，the opposite is true. |
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| Keywords: | damping modificationfactor vertical components subduction slab earthquake displacement spectrum random effects model |
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