Mechanism of static performance degradation of prestressed concrete cable-stayed bridges based on cable damage
YANG Guangjun
WEI Zhongguo
MOU Su
JIANG Zuoqian
SONG Tao
Abstract：To study the degradation mechanism of the static performance of prestressed concrete cable-stayed bridges after cable damage,the stay cables are equivalent to elastic supports,and an equivalent three-span continuous beam is established as the basic structure.A degradation model for cable force,main beam bending moment,and deflection after cable damage is developed,and analytical expressions for the degradation laws of the static performance of cable-stayed bridges after cable damage are derived.The computational results are compared with those obtained using the finite element method(FEM).The research results indicate that the theoretical computational results derived from the model are in high agreement with those obtained using FEM,validating the effectiveness and accuracy of the proposed model,which can be used to assess the static performance of prestressed concrete cable-stayed bridges after cable damage.
Keywords：cable-stayed bridgestatic performancedegradation mechanismcable damageprestressing force
Publication Date：2024-12-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：10( 91-99,118 )