Finite Element Analysis Of Moment-curvature Curve Of Steel Reinforced Concrete Column

Steel Reinforced Concrete (SRC) structures have advantage over Reinforced Concrete (RC) structures in strength and ultimate deflection capacity, at present, Steel Reinforced Concrete structures have obtained many application in practice. So it is necessary to study mechanical property of Steel Reinforced Concrete structural members comprehensively and systematically, moment-curvature relationship of Steel Reinforced Concrete member section is the basis for nonlinear analysis of structures and components. Now there are less research on it, so deeply studing on moment-curvature relationship of Steel Reinforced Concrete column section is of great scientific significance on its application.In this paper, 21 specimens are analysis calculation by ANSYS. Effect of concrete strength, steel style, ratio of steel and axial compression ratio are considered. The relation curves of moment-curvature and n-M/M₀ under directional monotonic loading are obtained. The results show that ratio of steel and axial compression ratio have a notably significant effect on section bearing capacity and curvature ductility; concrete strength and steel style have little effect on section bearing capacity and curvature ductility.6 specimens are calculated, and hysteretic curves of Steel Reinforced Concrete columns under low cyclic loadings are obtained. According to the hysteretic curves, skeleton curves are got, and the energy dissipation ability and the rigidity degradation and strength degeneration are analysised. the results showed that skeleton curve and monotonic loading curve have the consistent trend, bearing Capacity under monotonic loading is slightly higher, Steel Reinforced Concrete columns have well energy dissipation ability and stiffness degradation and strength degradation is slight. The calculation in moment-curvature relation curves of Steel Reinforced Concrete columns provide the basic data for the moment-curvature restoring force curve.