摘要：As one of the main load-carrying co.ponents of cable-stayed bridges,bridge towers are typically required to remain elastic even when subjected to severe ground motions with a 2%-3%probability of exceedance in 50 *** fulfill this special requirement imposed by current seismic design co.es,reinforcement ratios in the bridge towers have to be kept significantly higher than if limited ductility behavior of the tower is *** addition,since the foundation capacity is closely related to the moment and shear capacities of the bridge tower,a large increase in bridge co.struction co.t for elastically designed cable-stayed bridge is *** further investigate the possibility of limited ductility bridge tower design strategies,a new 1/20-scale cable-stayed bridge model with H-shaped bridge towers designed acco.ding to strong strut-weak tower co.umn design was *** shake table experimental results are co.pared with a previous strong tower co.umn-weak strut designed full bridge model.A co.parison of the results show that ductility design with plastic hinges located on tower co.umns,i.e.,strong strut-weak tower co.umn design,is another effective seismic design strategy that results in only small residual displacement at the top of the tower co.umn,even under very severe earthquake excitations.