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An alternative construction of normalized seismic design spectra for near-fault regions

ISSN号：1671-3664
期刊名称：《地震工程与工程振动：英文版》
时间：0
分类：P315.9[天文地球—地震学;天文地球—固体地球物理学;天文地球—地球物理学] P315[天文地球—地震学;天文地球—固体地球物理学;天文地球—地球物理学]
作者机构：[1]School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China, [2]Department of Civil and Environmental Engineering, University of Waterloo, N2L 3G1, Canada, [3]Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
相关基金：Special Scientific Research Fund of Earthquake Profession of China under Grant No. 201208013; National Natural Science Foundation of China under Grant No. 51238012

作者： Ni Shunhao[1,2], Li Shuang[1], Chang Zhiwang[1], Xie Lili[1,3]

关键词：抗震设计规范, 近断层, 设计谱, 地震动参数, 水平加速度, 结构, 当量模型, 脉冲型, near-fault, pulse-type ground motion, equivalent pulse model, attenuation relation, seismic design spectra

中文摘要：

这份报纸为在近差错的区域构造地震设计系列论述方法论。由分析近差错的脉搏类型地面运动的特征，一个相等的脉搏模型被建议，它能很好代表特征近差错前面择向性并且抛步脉搏类型地面运动。为近差错的区域的规范的水平地震设计系列用记录近差错的脉搏类型地面运动被介绍，相等的脉搏类型扎根了运动，它基于结合的相等的脉搏模型被导出地面运动参数变细关系。为近差错的区域的规范的垂直地震设计系列被与 vertical-to-horizontal 加速放大相应水平系列获得光谱近差错的脉搏类型的比率扎根了运动。建议地震设计系列看起来在统计意义有相对小的分散。为水平、垂直的方向的地震设计系列能提供选择光谱为地震设计代码的形状。

英文摘要：

This paper presents a methodology for constructing seismic design spectra in near-fault regions. By analyzing the characteristics of near-fault pulse-type ground motions, an equivalent pulse model is proposed, which can well represent the characteristics of the near-fault forward-directivity and fling-step pulse-type ground motions. The normalized horizontal seismic design spectra for near-fault regions are presented using recorded near-fault pulse-type ground motions and equivalent pulse-type ground motions, which are derived based on the equivalent pulse model coupled with ground motion parameter attenuation relations. The normalized vertical seismic design spectra for near-fault regions are obtained by scaling the corresponding horizontal spectra with the vertical-to-horizontal acceleration spectral ratios of near-fault pulse-type ground motions. The proposed seismic design spectra appear to have relatively small dispersion in a statistical sense. The seismic design spectra for both horizontal and vertical directions can provide alternative spectral shapes for seismic design codes.

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