Analysis On Mechanical Property And Bearing Capacity Of Prestressed Steel-concrete Continuous Composite Beams

Prestressed Steel-concrete Continuous Composite Beam works through the shearconnector by which Reinforced Concrete Plate and Steel Beam will be combined into awhole, work together and Coordination deformation. Prestressed steel-concrete compositecontinuous beam has the advantages of ordinary composite beams, also has the followingcharacteristics: the combination of elastic working range of beam; improve the ultimatebearing capacity of the structure; make full use of material properties, reduce the height ofthe structure, reduce the weight and reduce the earthquake action; to improve theperformance of fatigue and fracture; increase the intensity reserve, to improve thereliability of the beam; delayed cracking of concrete, prolong the service life of structure.In this paper, based on the test of the Prestressed Steel-concrete ontinuous CompositeBeams, according to it’s stress performance, adopted a nonlinear finite element analysismethod, with the aid of the finite element analysis software ANSYS, the three-dimensionalfinite element numerical models were established to analyze the whole process testnonlinear numerical simulation, the calculation results agree well with the test data, thepaper analyzed the Prestressed Steel-concrete Continuous Composite Beams ofdeformation mechanism, and discussed some single parameter (steel beam strength grade,concrete strength grade, thickness of steel webs, thickness of concrete, Longitudinal andLateral reinforcement ratio, loading mode) influence on the performance of the compositebeams.In addition, reference the existing theory, basis on the test results of PrestressedSteel-Concrete Continuous Composite beam and the method of alysis deformation ofPrestressed Steel-Concrete Continuous Composite beam,this paper analysis and calculationthe cracking load, yield load, and ultimate load of Prestressed Steel-Concrete ContinuousComposite beam. And, using the above formula, the test beam theory calculated values andtest results for comparison, analysis and study, provide a reference for engineering design.