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- W2348668122 abstract "In order to study the performance of steel-concrete composite trusses under fatigue loads and to improve the fatigue life of the composite trusses,6 composite truss models of a large span bridge were built and analyzed by ANSYS software combined with the nominal stress method.The damage of elements caused by fatigue loads were simulated by a refined finite element analysis,and more accurate modified S-N curves were obtained.The fatigue life of the models with different reinforcement ratios and concrete compression strengths under constant amplitude fatigue loading was simulated to study the influence of different factors on the fatigue life of composite trusses.The results showed that when the concrete strength was increased by one grade with a rate of about 8%,the fatigue life was increased by about 20%,while the reinforcement ratio was also increased with the same rate of about 8%,the fatigue life was increased by only about 0.3%.The concrete compression strength and the reinforcement ratio were both main influencing factors of the fatigue life.Fatigue life was increased while the concrete compression strength and the reinforcement ratio were increased,and the influence of concrete compression strength was more significant than that of the reinforce ratio.These results provide a basis for the design of composite truss bridges." @default.
- W2348668122 created "2016-06-24" @default.
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- W2348668122 date "2013-01-01" @default.
- W2348668122 modified "2023-09-26" @default.
- W2348668122 title "Finite element analysis on steel-concrete composite truss" @default.
- W2348668122 hasPublicationYear "2013" @default.
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