桥梁抗震设计中基于关键周期反应谱匹配的实际地震波优化选择方法
首发时间:2016-04-06
摘要:输入地震动的合理选择对于桥梁结构地震响应分析和抗震设计至关重要。因此,基于震级、距离、场地条件和震源机制等重要地震参数,根据输入地震动反应谱与目标谱在关键周期范围内匹配的原则,提出了一种新的实际地震波优化选择方法,能够在不改变实际地震波原始地震动特性的前提下,选择符合工程场地特定地震危险性水平的实际地震波作为输入地震动,并能适用于基于规范、基于性能等多种桥梁抗震设计方法,从而更加精确地预计桥梁地震响应。
关键词: 桥梁抗震设计 地震响应分析 反应谱匹配 实际地震波 优化选择方法
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An optimal real ground-motion selection method for matching a target response spectrum at key periods in seismic design of bridges
Abstract:Rational selection of input earthquake ground motions is extremely important for seismic response analysis and design of bridge structures. A new selection method for real earthquake ground motions is presented based on the spectral shape matching the target spectrum in the specified period range, given a level of intensity measure and its associated earthquake mechanism, magnitude, distance and soil condition for seismic response analysis and design of bridges. The method can select recorded earthquake ground motions according to site-specific seismic hazard and be applied to codes-based and performance-based seismic design of bridges to predict seismic response of bridges more precisely.
Keywords: seismic design of bridge seismic response analysis spectral matching real earthquake ground motion optimal selection method
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No.4682629114049614****
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桥梁抗震设计中基于关键周期反应谱匹配的实际地震波优化选择方法
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