Deformation Properties Analysis Of External Prestressed Steel-Light Concrete Composite Continuous Beams

This article approaches the deformation properties of the external prestressed steel-lightweight aggregate concrete composite continuous beam. External prestressed steel-lightweight aggregate concrete composite structure can give full play to steel, concrete and mechanical properties and recuperate inadequacies for the continuous beams at a certain extent.Based on the wide range of data collection external prestressed steel-lightweight aggregate concrete composite continuous beam deformation properties, prestressed tendon stress increment of the theoretical analysis. The use of minimum potential energy principle and variational method to export broken line layout combination of prestressed continuous beam at two under concentrated load deflection differential equations and the use of principle of minimum potential energy variational method to export broken line layout combination of prestressed continuous beam at two concentrated load under the differential deflection.Broken line on the layout of the two cross external prestressed steel-lightweight aggregate concrete composite continuous beam static test carried out studies to analyze the characteristics of its force. Pilot tested at all levels of the main load steel and lightweight aggregate concrete plate strain, deflection, cracks, cracking, etc. Reached the steel beam and lightweight aggregate concrete part of the strain distribution, load-deflection connection, load-strain connection, load-slip connection and along the cross-section such as a high degree of strain distribution results. The experimental results and theoretical calculation results are in good agreement, verify the sliding deflection change decomposition method the reliability.Using large-scale finite element software ANSYS tests carried non-linear finite element analysis, the analysis focus on the material and contact nonlinear non-linear materials, calculated data and experimental data for the control, in good agreement. On improving the external prestressed steel-lightweight aggregate concrete composite structure design is an important reference value.