Research On The Mechanical Behavior And ABAQUS Analysis Of Joints Between Steel Beams And Concrete Filled Rectangular Steel Tube Column

With the development of society and economy, people on the housing structure ofcomfort made increasing demands, but the traditional structure has been unable tomeet the demand, special-shaped column structure as a kind of new structure. Due tothe unique advantages of has a very good application. Based on this kind of structurein the structure and the rationality, the stress transfer mechanism of frame joints withspecial-shaped column is the core content of the research.This paper mainly studies the CFST column to steel beam connections under cyclicloading the seismic performance, in the concrete filled rectangular steel tube column tosteel beam frame node on the basis of test data, analysis of the kinds of node failuremode, put forward its shear failure mechanism. This article is mainly using finiteelement structural analysis software ABAQUS, on the5Cross and rigid connection inconcrete filled rectangular steel tube column to steel beam connections of the test tostudy the stress performance of the nonlinear finite element analysis, and thecomparison of test results. The results show that, the finite element analysis of thesimulation results and the experiment results agree well.On the basis of specimens under different ratio of height to thickness of columnsection and axial compression ratio performance has been simulated by the finiteelement analysis, and then to shear capacity formula of axial pressure ratio influencecoefficient carried out a detailed analysis and study, The results show that: theincreased ratio of height to thickness, flange thickness ratio can greatly improve theultimate bearing capacity of joint; and the axial compression ratio can be improved insome degree of concrete filled rectangular steel tube column and steel beam joint shearcapacity, but the high axial compression ratio under the effect of the shear strength of the joint has an undercut phenomenon.According to the results of analysis, and put forward the rectangular steel tubeconcrete special-shaped columns-steel beam joints shear bearing capacity calculationformula of axial compression ratio influence coefficient value law. Research results forthe rigid connection to the rectangular steel tube concrete special-shaped columns-steelbeam frame node seismic design and test study provides reference, so as to further studysuch nodes to pave the way for the role.