ABSTRACT
ABSTRACT: In order to analyze the distortion effect, the curved steel-concrete composite beam was simulated to an equivalent straight one by Method/radius method. Based on the energy-variational principle, and considering the material difference between the concrete slab and steel girder, the distortional governing differential equation of the composite beam was deduced. A curved composite beam in Harbin-Dalian passenger railway was selected as calculation example. Based on the elastic foundation beam analogy method, the distortional angle and bimoment were obtained by the initial parameter method and the finite element method respectively. The results indicate that, based on the elastic foundation beam analogy method, and simulating the curved composite beam to an equivalent straight one by Method/ radius method, both the initial parameter method and the finite element method can deduce the satisfied distortion effect of the curved composed beam.
