A novel structure is adopted in anchorage zone of cable tower on Chongqing Dongshuimen Yangtze River Bridge,the end plates in anchorage zone of common external steel anchor box cable tower are cancelled,and the steel anchor boxes are connected with concrete tower limbs by means of shear studs,in the mean time the prestress among tower limbs is arranged,enabling close connection between the steel anchor boxes and concrete,and the shear studs,side pulling plates and friction force are used to bear the force of stayed cables.Aiming at this novel structure,this paper establishes a nonlinear contact model for anchorage zone of cable tower via large-scale finite element software Midas FEA,the stress distribution in the steel anchor boxes,side pulling plates,shear studs and concrete on tower walls are acquired as well as transfer and distribution of cable force based on exquisite simulation calculation for the model.
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