预应力钢—混凝土连续组合梁力学性能分析及承载力计算.pdfVIP

工字型钢－混凝土连续组合梁受弯性能分析及负弯矩区承载力计算 Abstract Prestressed Steel-concrete Continuous Composite Beam works through the shear connector by which Reinforced Concrete Plate and Steel Beam will be combined into a whole, work together and Coordination deformation. Prestressed steel-concrete composite continuous beam has the advantages of ordinary composite beams, also has the following characteristics: the combination of elastic working range of beam; improve the ultimate bearing capacity of the structure; make full use of material properties, reduce the height of the structure, reduce the weight and reduce the earthquake action; to improve the performance of fatigue and fracture; increase the intensity reserve, to improve the reliability 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 Composite Beams, according to it’s stress performance, adopted a nonlinear finite element analysis method, with the aid of the finite element analysis software ANSYS, the three-dimensional finite element numerical models were established to analyze the whole process test nonlinear numerical simulation, the calculation results agree well with the test data, the paper analyzed the Prestressed Steel-concrete Continuous Composite Beams of deformation mechanism, and discussed some single parameter (steel beam strength grade, concrete strength grade, thickness of steel webs, thickness of concrete, Longitudinal and Lateral reinforcement ratio, loading mode) influence on the performance of the composite beams. In addition, reference the existing t