利用数字化速度记录实时仿真位移与加速度时程

Real-time simulation of ground displacement and acceleration using digital velocity record

根据地震仪的原理和作者提出的单自由度系统地震反应的递归公式,本文系统研究了利用数字化宽频带速度型记录仿真地面位移和地面加速度等问题,从时域上提出了一套实时计算公式。数值计算结果表明,本文所提方法速度快、精度高,可广泛应用于地震监测和地震动参数的实时计算。

Based on the principle of seismic sensor and recursive formula of calculating seismic response of single-degree-of-freedom (SDOF) system presented by the authors, this paper systematically studies the problem of simulating the ground displacement and acceleration using digital and wide-frequency band records and presents a series of formulas for calculation in time domain. The numerical analysis shows that the method gives reasonable results and can be widely applied to earthquake monitoring and real-time calculation of ground motion parameters.