Nonlinear Finite Element Analysis of Prestressed Continuous Steel-concrete Composite Beams with External Tendons

Abstract:

Based on test analysis of four prestressed steel-concrete beams,allowing for the nonlinearity of geometry and material,the lateral distortional buckling and the plate local buckling a fine and exact finite element stimulation model by ABAQUS is established to study the the nonlinear development of beams,which reflects the overall behavior of the beam and catches the local effect,such as the stress varying in prestressed tendons,the slip,the redistribution of internal forces,the overall instability and local buckling.Compared the results by the FE model with the tests carefully and strictly,the FE model is of excellent numerical function with enough accuracy and versatility,which provides a powerful numeral tool for the research of continuous steel-concrete beams prestressed with external tendons.