Structural Influencing Coefficient of K-eccentrically Braced Steel Frames

K-eccentrically braced steel frames,designed according to the Chinese code for seismic design of buildings,are analyzed by the non-linear time-history method with selected seismic records,then the structural influencing coefficient is investigated.The paper studies the relation between the coefficient and other factors such as the number of storey,span and change of the fundamental period,and presents the tentative R values of the structural influencing coefficient,which will provide some reference for engineering design.