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首页> 外文期刊>Bulletin of earthquake engineering >Updated predictive equations for broadband (0.01-10 s) horizontal response spectra and peak ground motions, based on a global dataset of digital acceleration records
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Updated predictive equations for broadband (0.01-10 s) horizontal response spectra and peak ground motions, based on a global dataset of digital acceleration records

机译：基于数字加速度记录的全球数据集，更新了宽带（0.01-10 s）水平响应谱和峰值地面运动的预测方程

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摘要

Presented herein is an updated model for empirical prediction of 5%-damped elastic response spectra in the period range 0-10 s, peak ground acceleration and velocity, based on a global dataset of digital acceleration records. The predictive model features saturation of the shaking parameters with both magnitude M-W and distance R-RUP, magnitude-dependent distance attenuation, alternative parameterisations of the amplification effects due to local site conditions (based either on ground types or V-S,V-30) and corrective terms for style-of-faulting. The calibration dataset comprises more than 1,880 x 2 orthogonal horizontal accelerometer records with R-RUP < 150 km from 98 global earthquakes with 4.5 <= M-W <= 7.9. The processing technique applied to the acceleration data optimises the reliability of the predictions at long periods, as required by displacement-based design techniques. Developed independently of the recent NGA-West2 and RESORCE-based models, the new predictive tool effectively contributes to capturing the epistemic uncertainties associated with the prediction of seismic shaking levels for engineering applications.
机译：本文基于数字加速度记录的全局数据集，提供了一个更新模型，用于在0-10 s的周期范围内（峰值地面加速度和速度）对5％阻尼弹性响应谱进行经验预测。预测模型的特征在于，振动参数的饱和度为MW和距离R-RUP，幅度依赖于距离衰减，由于局部场所条件（基于地面类型或VS，V-30）而引起的放大效应的替代参数设置以及错误样式的纠正性术语。校准数据集包含超过1,880 x 2个正交水平加速度计记录，这些记录来自于98次全球地震（4.5 <= M-W <= 7.9）的R-RUP <150 km。根据基于位移的设计技术的要求，应用于加速度数据的处理技术可长期优化预测的可靠性。独立于最近基于NGA-West2和RESORCE的模型而开发的新预测工具有效地有助于捕获与工程应用中的地震震级预测相关的认知不确定性。

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