本文分析了建筑物在地震作用下发生扭转振动的可能的原因,指出了国外现行计算偏心结构地震力方法中所存在的问题,建议采用地震力放大系数α_d来考虑扭转耦联效应。该系数具有清晰的物理概念,其部分数值由图给出。 This paper analyzes the possible causes of the torsional vibration of buildings under earthquake action, points out the problems existing in the existing methods for calculating the seismic forces of the eccentric structures in foreign countries, and proposes to use the seismic force amplification factor α_d to consider the torsional coupling effect. This coefficient has a clear physical concept and some of its values ​​are given by the graph.