Finite Element Analysis Of SRC Column-RC Beam Joint From Composite Structure

In this paper, composite structures of steel reinforced concrete columns- reinforced concrete beam(SRC column-RC beam) node as the research object, through theoretical explanations, refer to the relevant test to calculate the stress mechanism three channels for such nodes using the finite element modeling software and failure characteristics make system. Since the steel reinforced concrete structure in the relations within the member node configuration of steel, material composition, terms of node structure, stress mechanism, the deformation capacity of reinforced concrete structure with node there is a big difference, it is necessary to SRC column-RC Beam conduct a detailed study of the structure node.In the use of finite element software ANSYS src composite structure node column-RC beams under stress performance research, the first model of the way, the material different curve selection are made a detailed explanation. Referring to Dalian University of Technology a SRC column-RC Beam Joint related test, the test specimen configuration, loading and boundary conditions finite element simulation process. Through the analysis of finite element calculation results obtained in the inner beam reinforcement ratio different stress situations different loading stages SRC column-RC steel beam joints, concrete, reinforced three-part strain change process node concrete cracking the case, node failure process. Comparative Test conclusions on the use of finite element analysis software SRC column-RC beam joint of performance is feasible, calculation results with the experimental results obtained are consistent, and analyze the cause of the error appears.Secondly, this paper by changing other factors SRC column-RC beam joints properties, including steel flange width, beam web height, web thickness of steel, concrete strength, the nodes of the finite element analysis, and by derivation the composite structure nodes shear capacity formula corresponding calculation. Can be drawn: Raise the height and width of the beam web, Shear strength has been significantly improved; When raising the beam flange width, improved flexural capacity of the nodes, but no significant change in shear bearing capacity; in improve concrete strength after crack resistance of concrete lower node area to enhance the degree and intensity of crack bearing capacity is not a linear relationship, but it can effectively improve the bearing capacity of shear beam end node area.