一.前言不同场地条件下的强震记录,不仅对开展地震地面运动研究很重要,而且对地震工程和工程抗震等方面的研究也极为重要。但是,由于破坏性地震发生的机率及当前地震预报的水平所限,要取得理想的强震记录很困难,尤其是取得主震的近场记录更为困难。因此利用人工手段模拟天然地震,从而取得强震地面运动的各种资料,是一种比较好的办法。虽然人工地 I. INTRODUCTION The records of strong earthquakes under different site conditions are not only important for the study of earthquakes, but also of seismic engineering and seismic engineering. However, due to the probability of devastating earthquakes and the current level of earthquake prediction, it is difficult to obtain ideal strong earthquake records, especially for near-field records of main shocks. Therefore, the use of artificial means to simulate natural earthquakes, so as to obtain a variety of ground motion data, is a better way. Although manually