近断层地震加速度设计反应谱

Acceleration Design Response Spectra of Near-Fault Ground Motion

研究了近断层地震的加速度设计反应谱,选择了30次地震,132组近断层地震记录作为统计样本,根据得到的实际地震波的平均弹性加速度反应谱,给出了近断层地震设计弹性加速度反应谱表达式,并在此基础上,给出了近断层地震设计非弹性加速度反应谱计算公式.研究结果表明:提出的近断层地震设计弹性加速度反应谱与实际地震波平均弹性加速度反应谱较为接近,所建议的近断层地震加速度设计反应谱形式较为简单.

Acceleration design response spectra of near-fault ground motions are studied; and 30 earthquakes and 132 near-fault ground motion records are selected as statistical samples. From the statistical average elastic acceleration response spectra, an elastic acceleration response spectra formula of near-fault ground motions is proposed; and based on it the inelastic acceleration response spectra formula is suggested too. It is shown that the elastic acceleration response spectra of near-fault ground motions proposed is close to the average elastic acceleration response spectra of actual earthquake waves; and the acceleration design response spectra of near-fault ground motions suggested are simple.