| The joint between square steel concrete column and I-BEAM is designed in this paper.The plastic hinge at the end of the beam is moved out by the Outer Ring Plate.The material used in this joint is all Q345 steel,and the concrete is fine stone concrete with strength grade C40.The research for this article is as follows.Because the earthquake is one kind of very serious geological disaster,often causes the serious human casualty.People can be injured or even killed when buildings collapse under the action of earthquake,so the ability of building structure to resist earthquake is very important.In the building,the joints play an important role in the seismic performance of the structure,so this paper,by consulting the relevant literature and national standards,combined with the research status,a new type of fabricated beam-to-column connection between concrete-filled square steel tubular column and I-steel Beam Flange is designed.In this paper,we use ABAQUS software to simulate the seismic behavior of reinforced beam-to-column joints of concrete-filled square steel tubular columns and i-steel beams,and apply the reversed symmetric displacement load at the beam end to simulate the seismic behavior,get the data of the design node in this paper.Then,the seismic performance of node specimen "10-10" was analyzed.The hysteretic curve,skeleton curve and stiffness degradation curve of the node were drawn by the data obtained by ABAQUS software.The curve trend was relatively good,and the node had strong seismic capability.Two sets of controlled experiments are designed with the Outer Ring Plate thickness and the Outer Square steel tube thickness as the variable parameters,and the influence of the outer ring plate thickness and the Outer Square steel tube thickness on the seismic behavior of the joints is analyzed,through comparison,it is found that the thickness of the square steel tube has the greatest influence on the seismic behavior of the joint,which directly reflects the strong column and weak Beam Coefficient of the joint,followed by the thickness of the outer ring plate,it is found that the initial stiffness of the joint increases with the thickness of the Outer Ring Plate and the Outer Steel Tube,and the ductility of the joint decreases.When the thickness of the outer ring plate is 10 mm and that of the outer tube is 10 mm,the joint shows the best seismic performance,ductility is also good,the structure as a whole has strong seismic performance. |
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