Analysis On Flexural Behavior Of High Strength I-shaped Steel-Concrete Beams And Bearing Capacity Calculation

Steel-concrete Composite Beam works through the shear connector bywhich Reinforced Concrete Plate and Steel Beam will be combined into awhole, work together and Coordination deformation. Although the study andapplication of the composite beams has continued for decades, but becauseof its complex mechanical properties, compared with whether reinforcedconcrete structure or steel structure, the composite structure still won’t beenough. In addition, in recent years, with the wide application of highstrength materials for the composite beams, a lot of research works stillneed to follow up.In this paper, the latest test of the I-shaped Steel-concrete CompositeBeams was used, based on bending performance, adopted a nonlinear finiteelement analysis method, with the aid of the finite element analysissoftware ANSYS, the three-dimensional finite element numerical modelswere established to analyze the whole process test nonlinear numericalsimulation, the calculation results agree well with the test data. By usingthe model, the paper analyzed the I-shaped Steel-concrete Composite Beamsof deformation mechanism, and discussed some single parameter (steelbeam strength grade, concrete strength grade, thickness of steel webs,thickness of concrete, Longitudinal and Lateral reinforcement ratio) forbending influence on the performance of the composite beams, and based onthis, did the orthogonal analysis, the factors that influence extent.In addition, referred to the existing related theory literature, tookexample by calculation theory of the I-shaped Steel-concrete CompositeBeams, this paper described two kinds of section (including the first kind ofcross section that the plastic neutral axis is located in reinforced concretewing and the second section that it located in steel) of the loading-capacityformula. Used the above formula, compared the theoretical value of thebeam with the test results, for Analyzing and studying. Lastly, the resultsderived from analysis provider some useful references for engineeringdesign.