近场脉冲型地震对结构非弹性位移比谱的影响
发布时间：2018-07-26 21:04
【摘要】：将选择的746条各国强震记录按照我国建筑抗震设计规范中的规定进行场地分类.按照最新的识别近场强速度脉冲地震记录的定量方法,将选择的地震记录划分为中远地震、近震及近场强脉冲地震记录.利用这些强震记录,统计得到了近场强脉冲地震对应Ⅰ,Ⅱ,Ⅲ,Ⅳ四类场地的等延性位移比谱、等强度位移比谱的计算公式,并由此研究了场地条件及各种地震动参数对等延性位移比谱、等强度位移比谱的影响.结果表明:近场地震动的脉冲作用在中短周期段[0.3s,5s]对等延性位移比谱的影响较大,近场地震动的脉冲作用在中短周期段[0.5s,3s]对等强度位移比谱的影响较大且部分可达80%以上,场地条件对影响周期段的范围有重要影响;峰值地面速度与峰值地面加速度比(PGV/PGA)是影响近场地震动位移比谱最大的参数.
[Abstract]:The selected 746 records of strong earthquakes in different countries are classified according to the provisions of the code for seismic design of buildings in China. According to the latest quantitative method to identify the near field velocity pulse seismic records, the selected seismic records are divided into Cosco earthquake, near earthquake and near field intensity pulse seismic records. Using these strong earthquake records, the formulas for calculating the isoductive displacement ratio spectrum and equal intensity displacement ratio spectrum of near-field pulsed earthquakes corresponding to four types of sites, I. e., 鈪，
本文编号：2147283
[Abstract]:The selected 746 records of strong earthquakes in different countries are classified according to the provisions of the code for seismic design of buildings in China. According to the latest quantitative method to identify the near field velocity pulse seismic records, the selected seismic records are divided into Cosco earthquake, near earthquake and near field intensity pulse seismic records. Using these strong earthquake records, the formulas for calculating the isoductive displacement ratio spectrum and equal intensity displacement ratio spectrum of near-field pulsed earthquakes corresponding to four types of sites, I. e., 鈪，
本文编号：2147283
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