近断层地震动的特点及其对结构地震反应影响研究进展

In recent years, with the increasing acquisition of the near-fault ground motion records and increasing deepening of the research work, it is found that near fault ground motions have some distinct different characteristics compared with the far-field earthquakes and these special effects have significant influences on the seismic response of structures. This paper firstly briefly introduced the characteristics of near-fault ground motions, emphasizing on the rupture directivity effect and the fling-step effect as well as relative mechanisms and the formation of two different large velocity pulses. And then, the influences of the rupture directivity effect and fling-step effect on the seismic response of several typical civil engineering structures were systematically summarized and reviewed. Finally, the main problems existing in the current research and the future directions were discussed.