摘   要：研究了近断层脉冲地震动的工程特性。按照《建筑抗震设计规范》（GB50011-2010）进行抗震设计，选择具有前方向性效应、滑冲效应和远场地三类地震动作为输入，采用Sap2000对一座四层钢筋混凝土框架进行非线性时程分析。分析结果表明：对于顶点位移、层间位移角和基底剪力等结构动力响应参数，当结构的地震反应进入弹塑性阶段后，与远场地震动下的反应相比，在具有前方向性效应和滑冲效应地震动作用下，结构的反应有较大幅度的增大，对结构中下部的破坏作用的影响比较显著。

Abstract: The engineering characteristics of the near-fault ground motion are studied. The four-floor reinforced concrete frame is designed under《Code for seismic design of building》GB50011-2010. The SAP2000 software is applied to model it, and the nonlinear time history analysis of structure is implemented. Ground motions with forward directivity, fling-step and far-field are selected as seismic inputs．The results show that in terms of some structural dynamic response parameters, such as the vertex displacement, the displacement corner between the layers and the base shear, etc., compared with far-field ground motion, under the function of ground motion with forward directivity and fling-step, the structural responses to the ground motion with near-fault are increased considerable magnitudes when the seismic responses of structures step into the elastic-plastic stage, and the influence on damaging the mid-lower structure is obviously greater.