The behavior of steel moment frame with interior leaning columns and hinged beams under lateral load

A new structure system that i.e.a multi-storey steel moment frame combined with interior leaning columns and hinged beams(MFCLC) is put forward in this paper.To research the behavior of this structure system under lateral loads,two analytical six-storey steel buildings are designed,an un-braced steel moment frame(MF),and an MFCLC.Three-dimension finite element method is used to analyze the two structural models.Ultimate bearing capacities of the two models subjected to three different distribution types' lateral loads are studied and compared.The results showed that the new structural system has similar or even better performance than the pure steel moment frames in the case where the volume of the steel is not increased.In addition,as a result of reducing a large number of steel beam-column rigid connections,the MFCLC can reduce the configuration volume of the steel in total beam-column connections.Steel frames with more flexible beam-to-column connections also have many economical and construction advantages over rigid frames.