Nonlinear Stress Analysis of Cable-Pylon Anchorage Zones RC of Extra-Dosed Cable-Stayed Bridge in Railway

摘要

An extra-dosed cable-stayed bridge is taking as the practical engineering background to make the finite element nonlinear analysis of a section of reinforced concrete of the main tower by large software Ansys in this paper. Concrete cracking and crushing were considered, obtained the ultimate load of test model can bear as well as the stress-strain relationship of its steel and concrete, and draw a diagram of concrete crack distribution, when the value of concrete of the model to withstand the horizontal splitting stress, the bottom and top of the concrete of the saddle appeared signs of crack at the same time. The maximum compressive stress uniform distribution in the bottom area of the saddle and did not meet the design value of compressive strength, tensile stress first reached the limits of state.