Abstract
In this study, a designed long-span suspension bridge tower using CFT (Concrete-Filled steel Tube) was compared with previously-investigated RC and steel towers in terms of economical and construction efficiencies. Besides, pushover analyses were performed to characterize the strength and ductility of the CFT tower. The results showed that the CFT tower had the potential to exceed in economical efficiency compared to other two types of towers and to have the almost same strength and ductility as the RC tower. Furthermore, it was found that enlargement of the diagonal members improved the strength and installation of shear-links improved the ductility, respectively.
