【摘要】 本文对由反应谱求功率谱的近似公式的误差进行了讨论,从而说明了精确求解地震动功率谱的必要性,并从构造函数的特征出发,提出了一类符合要求的构造函数族,同时对其参数的取值加以讨论。最后给出了一个算例,展示了从反应谱求功率谱的精确方法与近似方法在数值上的差别,以及对人造地震动的影响。更多还原

【Abstract】 After analysing the error of the approximate calculation formula of power spectrum density function through response spectrum,the authors put forward a new exact method to estimate the power spectrum density function through response spectrum. The selection of the construction function and the determination of some parameters are discussed.A numerical example is given to illustrate the exact method and it is shown that for some frequency range the approximate method to estimate the power spectrum density function through response spectrum is difficult to meet the needs of engineering accuracy requirements.更多还原