Column Effective Length considering the Inter-Story Interaction

摘要: Through an analysis of a simple two-story frame, this paper revealed that the assumptions used in conventional effective length method led to unrealistic distribution beam restraints among connected columns. With three approach discarded, new is proposed by which column considering inter-story interaction can be obtained unbraced two- or three-story frames. A quadratic equation for frames and cubic are derived from rotational provided each may solved factors then determined traditional formula tables. For more than 3 stories, weakest story selected sub-assemblage including taken out, applied, thus obtained, remaining columns computed through predefined re...