Research on Fatigue Performance of Anchorage Plate of Cable-stayed Bridge
Cable-stayed bridge is a new type of large-span bridge,which has great advantages in structural performance and construction technology.However,under the condition of a significant change in cable force,fatigue micro-cracks will occur in the stress-concentrated parts of the cable anchoring position of the cable-stayed bridge,resulting in fatigue failure.Therefore,it is very important to study the fatigue characteristics of the bridge anchoring structure under cyclic loading to ensure the safety of the bridge.Anchorage plate is a common form of anchoring structure.The fatigue performance of anchorage plate is analyzed and studied.The results show that the normal stress of fatigue calculation point is 44.00 MPa,the shear stress is 41.50 MPa,and the structural damage degree is 0.22,which all meet the fatigue checking requirements specified in the steel structure bridge specification,and provide a basis for the structural performance analysis of anchorage plate of cable-stayed bridge.
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