Calculation of cable-stayed bridge construction cable force and analysis of construction deviation
LI Heng
TANG Huang
Abstract：Taking a large-span,wide-deck prestressed concrete cable-stayed bridge as the analysis subject,starting from the bridge construction process,using the bending moment and cable force values under a reasonable final bridge state as control parameters,the direct installation iterative method is employed to solve the tensioning cable forces of the bridge's cable stays.The cable force values,bending moment values at control sections,deck profile,and design final bridge state were compared and analyzed,showing a high degree of closure with good final bridge results that met both construction and design requirements.The impact of deviations in four parameters,main girder self-weight,cable force,modulus of elasticity,and temperature-on the structural state was analyzed in detail.The study shows that deviations in main girder self-weight,cable force,and temperature have a significant effect on the final bridge state,while the deviation in the elastic modulus of concrete has a relatively smaller impact.
Keywords：cable-stayed bridgeorthotropic iterative methodtension cable forcecable force calculationfactor analysis
Publication Date：2024-11-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 69-76 )