【摘要】 选取国内外典型地震的强震记录分析,发现一些具有尖刺现象的记录,研究"jerk"方法在识别尖刺中的应用,并使用统计方法重点研究峰值加速度中所存在的尖刺现象,初步分析其产生的原因,给出识别和处理尖刺的方法 ,并研究尖刺对于加速度、速度、位移、加速度傅里叶幅值谱以及相关反应谱的影响。研究结果表明:1造成尖刺现象的原因很多,仅通过强震记录难以判断;2"jerk"方法在识别复杂的尖刺时具有一定的局限性;3比值法可初步识别复杂的尖刺;4尖刺的处理方法会影响到绝对加速度反应谱的计算。更多还原

【Abstract】 Strong motion records of the typical earthquake are selected in the article, and "spikes" are found in certain records. The "jerk"method is used to identify the "spike". And the "spike" in the peak ground motion is further studied. The causes of the spikes are summarized, then the method to identify and modify the spikes is given. The research on the effect of the "spike" on the acceleration, velocity, displacement, acceleration Fourier amplitude spectrum and the associated response spectrum is carried out. The results showed that: 1 to the specify record, it’s difficult to give the reasons leading to the "spike"; 2 there are some limitations in the identify of some complicated spikes for the "jerk" method; 3 ratio method can preliminary identify the "spike"; 4 the identification method for "spikes" will affect the absolute acceleration response spectrum.更多还原