Site-Specific Design Spectra for Vertical Ground Motion
Site-Specific Design Spectra for Vertical Ground Motion
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DOI：
10.1193/1.3651317
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发表时间：
2011-11
影响因子：
5
通讯作者：
Z. Gülerce;N. Abrahamson
中科院分区：
文献类型：
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作者：
Z. Gülerce;N. Abrahamson
本文包含地面运动预测方程（GMPEs）的垂直水平谱加速度（V/H）比，和方法，用于构建垂直设计谱是一致的概率地震危险性评估结果的水平地面运动分量。V/H比的GMPE与Abrahamson和Silva（2008）的水平GMPE一致，使用太平洋地震工程研究中心的下一代地面运动衰减模型（PEER-NGA）数据库（Chiou et. 2008）。建议的V/H比GMPE是依赖于地震震级和距离，与以前的模型一致，但它不同于以前的研究，因为它占的水平和垂直分量的非线性场地反应的影响的差异。非线性效应的这种差异导致靠近大地震的土壤场地在短谱周期下具有较大的V/H比。提出了一种方法来开发垂直设计谱依赖于水平分量均匀危险谱，占水平地面运动模型的变异性和V/H比地面运动模型的变异性之间的相关性。
This paper contains ground-motion prediction equations (GMPEs) for the vertical-to-horizontal spectral acceleration (V/H) ratio, and the methods for constructing vertical design spectra that are consistent with the probabilistic seismic hazard assessment results for the horizontal ground motion component. The GMPEs for V/H ratio consistent with the horizontal GMPE of Abrahamson and Silva (2008) are derived using the Pacific Earthquake Engineering Research Center's Next Generation of Ground-Motion Attenuation Models (PEER-NGA) database (Chiou et. al. 2008). The proposed V/H ratio GMPE is dependent on the earthquake magnitude and distance, consistent with previous models, but it differs from previous studies in that it accounts for the differences in the nonlinear site-response effects on the horizontal and vertical components. This difference in nonlinear effects results in large V/H ratios at short spectral periods for soil sites located close to large earthquakes. A method to develop vertical design spectra dependent on the horizontal component uniform hazard spectrum that accounts for the correlation between the variability of the horizontal ground-motion model and the variability of the V/H ratio ground-motion model is proposed.