Abstract:From the acceleration response spectrum, combined with the main synthetic methods of artificial seismic wave at home and abroad, by fitting, comparison and analysis of the software, the influences of some parameters on the fitting results are studied and discussed, and the artificial seismic waves are generated which fit well with the standard response spectrum of Chinese building seismic codes, and also used in the elastic dynamic time-historical analysis of many actual tunnel and utility tunnel projects in Suzhou. The analysis results of the examples show that the fitted artificial seismic wave is used for the time-historical analysis. The response results obtained have little deviation from those obtained by the reaction spectrum method and the natural wave analysis, which meet the requirements of the corresponding specifications on the time-historical analysis in China.