Numerical Simulation Analysis Of Steel Reinforced Concrete Based On Bond Slip

Steel Reinforced Concrete structure not only has high load-bearing, good ductility, high seismic performance but also effectively reduces project cost. So it is widely used in all areas especially in the ultra-high-level and large-span structures. Concrete, steel, reinforced interact in the steel reinforced concrete. There are two force transmission way between steel and concrete, namely, natural bonding and shear connectors. The study found that concrete failure increases when shear connectors on force, which can reduce the natural bond strength between steel and concrete. Therefore, natural bonding and shear connector should be considered separately, rather than simple sum of the two intensity.Good bond between steel and concrete can ensure composite structure has high performance. Currently, there is a lot of mechanical properties study on steel reinforced concrete members. But study on bond-slip effect between steel and concrete is not comprehensive.The research point in this paper is power transmission between steel and concrete. Natural bonding effect and shear connectors simulated using nonlinear spring element. By the numerical simulation of steel reinforced concrete columns, steel reinforced concrete beams and steel reinforced concrete composite frame, drawn the difference of displacement and carrying capacity with bond-slip and without bond-slip. And summarize the relationship between arrangement of shear connectors and slip between steel and concrete.