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首页> 外文期刊>Bulletin of earthquake engineering >Vertical ground motion prediction equations and vertical-to-horizontal (V/H) ratios of PGA and PSA for Algeria and surrounding region
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Vertical ground motion prediction equations and vertical-to-horizontal (V/H) ratios of PGA and PSA for Algeria and surrounding region

机译：垂直地面运动预测方程和阿尔及利亚和周边地区的PGA和PSA的垂直水平（v / h）比

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The paper presents a ground motion prediction equation (GMPE) for the vertical pseudo spectral acceleration for periods varying from 0.02 to 4s. The model is derived from the same strong motion database as previously considered for the horizontal GMPE for Algeria (Laouami et al. 2018). 583 vertical records homogeneously processed having magnitude and distance intervals of 3-7.4 and 1-150km respectively are used. The functional forms are similar to those used for our horizontal GMPEs. To consider the soil factor, three soil classes are defined based on the horizontal over vertical spectral ratios: rock, firm and soft. Estimates of period-dependent site coefficients reveal negligible vertical site amplifications compared to the horizontal ones. This work also presents a model for vertical over horizontal (V/H) response spectral ratio derived from the vertical and the horizontal GMPEs. One found, particularly for small distances and large magnitudes, that the V/H ratio has a large peak, which may exceed unity, around the period range 0.04-0.1s. This result may be very important for seismic behavior of stiff structures which vertical fundamental period's lies within a period range 0.04-0.15s. The derived horizontal and vertical GMPE's are used to compute predicted H/V spectral ratios for given scenarios. Compared to the recorded mean H/V spectral ratios, this tool allows checking the confidence level of the site classification scheme. Comparison of the median V/H response spectral ratios with period predicted from the model of this study with those from the Algerian seismic code RPA99 (2003) and the EC-8 (2004) (type 1 and type 2) reveals that the definition of the V/H spectral ratio from the RPA99 is closer to the scenario (M=7 and R-jb=100km). Unfortunately, this scenario is not the worst for the vertical component. The present study has shown that the worst case scenario is related to high magnitude and short distance. For this scenario, for which the RPA99s do not p
机译：本文介绍了用于垂直伪谱加速度的地面运动预测等式（GMPE），其周期从0.02到4s变化。该模型衍生自相同的强运动数据库，如前用于阿尔及利亚的水平Gmpe（Laouami等，2018）。 583使用分别具有3-7.4和1-150km的幅度和距离间隔的垂直记录。功能形式类似于用于我们水平GMPE的那些。要考虑土壤因子，基于垂直光谱比率的水平定义了三种土壤类别：岩石，坚固和柔软。与水平的依赖于期地点系数的估计显示出可忽略的垂直部位扩增。这项工作还提出了一种用于垂直的型号（v / h）响应光谱比率，来自垂直和水平的GMPE。一个发现的，特别是对于小距离和大的大小，V / H比具有大峰值，其可能超过统一，周期范围为0.04-0.1s。这种结果对于刚性结构的刚性结构的地震行为可能非常重要，该垂直基本时期位于0.04-0.15s的周期范围内。派生的水平和垂直GMPE用于计算给定场景的预测的H / V光谱比率。与记录的平均值H / V光谱比率相比，该工具允许检查站点分类方案的置信水平。与来自阿尔及利亚地震代码RPA99（2003）和EC-8（2004年）（类型1和类型2）的研究中预测的期间V / H响应光谱比的比较揭示了来自RPA99的V / H光谱比更接近方案（M = 7和R-JB = 100km）。不幸的是，这种情况不是垂直组件的最糟糕的状态。本研究表明，最坏情况的情况与高幅度和短距离有关。对于这种情况，RPA99没有p

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