Non-elastic responses of tall steel buildings subjected to across-wind forces

This paper presents an analytical method which takes into account the non-l inearity of individual members, and discusses some case study results. It a lso discusses the relationship between member nonelastic behavior and excit ation duration, and the relationship between member fracture and overall st ructure behavior. It is clearly demonstrated that the frame already shows a lmost unstable behavior due to long-columnization just before the occurrenc e of a column fracture. Then, a column fracture immediately induces a struc tural collapse mechanism.