| As everyone knows that structural weight is one of the influence factors to the seismic performance,on the basis of the strength unchanged,reducing weight can reduce the loss degree of the seismic action to the structure.Honeycomb components is a structure form of being able to ensure the structural strength and reducing the weight,before the research of cellular component is H-shaped steel,and cellular component is a kind of steel tube now,especially steel tube of the hole in civil engineering.The cellular components are used in the system of nodes to analyze the seismic performance of the structure.In the structural system,the relative importance of the site is the node,the effective connection between the cellular steel tube and the honeycomb steel beam to coordinate the work is very critical to ensure the Structural integrity and to achieve "strong node,weak component" design idea of Anti-seismic.Analysis of the seismic performance of honeycomb steel tube column and steel beam joints under the cyclic loading was numerically simulated by using finite element software ABAQUS,which is mainly by changing the influencing parameters of component of its performance,a further research on the seismic performance.Mainly include the following contents:Firstly,the seismic performance of the steel joints was simulated by finite element analysis,and the results were compared with the results of the existing test results,the failure mode,hysteresis curve,skeleton curve,stiffness degradation curve,ductility coefficient and energy consumption index was in good agreement with the experimental results.So the finite element analysis software ABAQUS can accurately reflect the real situation,and to expand the cellular nodes in the change parameters of seismic performance.Secondly,by using the ABAQUS finite element simulation software to establish the model,select the appropriate material properties,boundary conditions,contact surface treatment and its loading system,comparing with the prototype steel joints,the energy dissipation capacity,ductility and ultimate load capacity of the joints are analyzed by using the method of this model.It can be concluded that the reasonable determination of the influence factors can effectively improve the seismic performance of the honeycomb steel joints,and it is better than the prototype.Finally,the numerical simulation analysis is carried out.Analysis of failure mode under the cyclic loading for cellular steel tube column and steel beam joint,at the same time,the analysis of axial pressure ratio(n=0.3,0.4,0.5,0.6,0.7,0.8),open hole form(circular,hexagonal and rectangular),opening rate(?=0.45,0.55,0.65),open hole spacing(B=50mm,90mm,120mm) and open hole position(L= 160mm?260mm,Z=160mm?300mm)to seismic performance influence of the honeycomb steel pipe column-beam.Through the analysis and research,it is indicated that the seismic performance of the honeycomb steel joints can be improved by selecting reasonable axial compression ratio,selecting the circular opening form,reducing opening rate,reasonable selection of the spacing of the holes which can improve the performance of the honeycomb steel tube column and steel beam joint.In this paper,the seismic performance of honeycomb steel tubular column and steel beam joints is analyzed,and a further understanding of the honeycomb type joint element,which can provide a reference for the seismic theory and design method,and a reference for the practical application of engineering. |
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