Research On Mechanical Behavior Of Steel Frames With Steel-Concrete Composite Beam Based On Opensees

Steel Frames with Steel-Concrete Composite Beam are widely used in high-rise structures, and also attracted attention of domestic and foreign experts and scholars, because of its high capacity, short duration, stiffness, ductility, environmental protection and other significant advantages. In the structural design, the combination of steel beams and concrete action by stiffness reduction to consider, there is no real reaction the slip effect between steel beams and concrete slabs. For large steel frame structure with Steel-Concrete Composite Beam, senior or super high-rise structure, the traditional modeling software,such as ANASY, MIDAS, ABAQUS, have a series of problems to be solved, such as the complexity of the model, modeling tedious and difficult. This article write steel-concrete composite beams function and Steel Frame structure with Steel-Concrete Composite Beam function based on OpenSees. In large modeling it can be directly used for improving the modeling efficiency.By discussing the element type, material constitutive, integration points and the author select the appropriate unit, the material to write CS, CBM, HSection and other sub-modules function, then used the function modules integrated composite beams and Steel Frame with Steel-Concrete Composite Beam. It analyzed the reference load-displacement curves, hysteresis curves were. Comparative results show that:This article compiled steel-concrete composite beam model function, steel-concrete continuous composite beam model function, Steel Frame with Steel-Concrete Composite Beam model function has high precision simulation with the experimental results at different loading and different forms of structure.Secondly, we use the steel-concrete composite beam module function procedures and pure steel column module program analysis the force characteristics of steel frame and pure steel frame.By changing Steel Frame with Steel-Concrete Composite Beam’s thickness of concrete, reinforcement ratio, steel beam height, the strength of concrete and steel strength, to study its effect on the seismic performance of steel frames. the results can be used to guide the composite beam seismic Design of Frame Structure System.