Analysis Of Seismic Behavior Analysis Of Steel Frame Beam Web

The beam-to-column joint in the steel frame plays a very important role in the safety of the whole structure.In order to avoid the brittle failure of the beam-column joints under earthquake action,the web of steel frame beams are weakened to force the plastic hinges away from the beam-to-column joint welds,thus realizing the design concept of "strong joints weak members".Taking factors of material nonlinearity and geometric nonlinearity into account,the mechanical properties of web with circle and square of steel beams are conducted with finite element software ANSYS in this paper,the comparisons with the mechanical properties of traditional beam-to-column connections were conducted.The results reveal that under the condition that the stiffness and the ultimate bearing capacity decrease in a small amount,the ductility coefficient and energy dissipation coefficient of the joint can be greatly improved to achieve the desired seismic effect through reasonable parameter design.In this paper,16 specimens are designed for open-hole and square-hole of steel web,through comprehensive comparison and analysis of stress nephogram,hysteresis curve,skeleton curve,ductility coefficient,energy dissipation coefficient and ultimate bearing capacity of each specimen,the proposed range of distance from the center of the hole to the edge of the column L,D and the hole size R,A are given.Finally,to solve the problem of excessive opening of the beam web,this paper proposes four forms of hole reinforcement,through comprehensive comparison of stress nephogram,hysteresis curve,skeleton curve,ductility coefficient,energy dissipation coefficient and ultimate bearing capacity of each specimen similarly,an effective form of hole reinforcement is recommended.