【摘要】 反应谱的标定方法直接关系到反应谱特征参数的确定,合理的反应谱标定方法得到的设计反应谱能够真实地表达地震动的特性,是确定地震动输入的重要环节。提出了基于坐标变换的最小二乘法分段拟合方法,通过对汶川大地震不同场地典型强震记录反应谱的标定,对比了反应谱不同的标定方法,根据反应谱标定图形的对比及误差分析认为,最小二乘法分段拟合方法是操作简便且标定结果合理的反应谱标定方法。更多还原

【Abstract】 The method of calibrating seismic design response spectrum is related directly to the determination of the characteristic parameters of response spectrum,and seismic design response spectrum based on logical calibrating method can express the real characteristic of earthquake strong motion.So calibration of seismic design response spectrum is the important chain of structures’ seismic input determination.This paper advances least square fitting method of calibrating seismic design response spectrum based on coordinate transformation.By calculating the characteristic parameters of typical Wenchuan earthquake strong motion records and comparing different calibrating methods and analyzing the error of different methods,it points out that sectional least square fitting method is a simple and reasonable calibrating method.更多还原