Research And Theoretical Analysis On The Restoring Force Model Of Steel Reinforced Concrete Transfer Columns

For Steel reinforced concrete transfer frame as a new type of structure, some experimental and theoretical studies have been carried out by some scholars at home and abroad. This thesis firstly introduced the properties, the history and the base form of Steel Reinforced Concrete transferring frame. The thesis focus on Steel reinforced concrete transfer columns (SRC-RC) as the research object, to study the restoring force model of Steel reinforced concrete transfer column (SRC-RC) for further analysis in the original research results.Renforced concrete finite element analysis is an important research method in structure analysis realm.It can be accurate analyses the force performance of many complex configuration engineering. In this paper, used plastic injury model and consider concrete under repeated loads of stiffness degradation of ABAQUS nonlinear finite element software, the simulation for the hysteresis curve of three different types of columns (RC reinforced concrete columns, steel reinforced concrete column SRC and Steel reinforced concrete transfer column SRC-RC) has been carried out.The simulation results were good agreement with the experimental results, therefore, the methods of numerical simulation of ABAQUS program presented in this paper could be introduced into the simulation of the SRC-RC hysteretic curve.In this thesis, based on the different of the steel length and axial compression ratio, the eleven SRC-RC columns are designed for finite element calculation.The hysteresis curve and skeleton curve of the components have been got. According to the theoretical calculations for beam-columns and mechanical knowledge of reinforced concrete columns and steel reinforced concrete columns, the calculation formula of displacement and the load of feature points for SRC-RC restoring force model have been deduced. Theoretical calculation results are good agreement with the finite element results. According to the analysis in this paper, the practical calculation method of Steel reinforced concrete transfer column (SRC-RC) skeleton curve of restoring force model has been got. This paper will be helpful for the further seismic researches on steel reinforced concrete transfer structure.