Finite Element Analysis Of Mechanical Behavior Of Steel Reinforced Concrete Column-Steel Reinforced Concrete Beam Joint

Steel reinforced concrete(abbreviation SRC)is the structure that refers to the concrete contain reinforced and steel. It is a chief form of concrete and steel composite structure. At present, nationally and internationally, the preferment and application of SRC structure have become more and more widespread. Therefrom, it is extremely significant to research SRC, predominate its mechanical properties, and apply it to engineering practice.Nodes are the key parts to connect beams and columns. To SRC structure, the design and calculation of nodes is a key issue. The internal forces of beams and columns are transmitted through the nodes. so the joint safety and reliability is a precondition to ensure the structural normal work. on the basis of the intricate stress, joint generally are in bending-shear compound stress state, so it is significant to study and discover the joint stress performance and failure principle, to make sure that they are designed reasonably, calculated reliably and can transmit the power clearly. Additionally, In the earthquake, it is more significant of the reasonable design of it.Based on the quasi-static experimental study of steel reinforced concrete column to steel reinforced concrete beam joint under low-cycle reversed loading, finite element numerical analysis of the joint under cyclic loading by using finite element software ANSYS is established. The main work and conclusions are listed as follows:1、The main research status of SRC structure at home and abroad is reviewed; and the theory analysis method of SRC structure is briefly summarized; and the calculation theory of nodes is briefly analyzed;2> Nonlinear analysis is conducted to analyze hysteretic behavior of steel reinforced concrete column to steel reinforced concrete beam joint under low-cycle reversed loading. The P-Δ hysteresis loops, skeleton curves, feature loads and displacements from finite element model calculation agree well with experimental results. It is demonstrated that the nonlinear finite element models were rationally established. At the same time, seismic behavior indicators, such as the rigidity degradation, ductility compared well with the experimental results;3、In order to understand better the mechanical behavior of the SRC joint, parametric analyses are conducted in this paper.