Study on Earthquake Resistance Behavior of Medium Thick – Walled Cold – Formed Steel Double Web – Top Bottom Angle Steel Joints

The ABAQUS nonlinear finite analysis was conducted to study the earthquake resistance behavior of three medium thick-walled cold-formed steel double web-top bottom angle steel joints under low cyclic loading. The analysis results indicate that the failure characteristics of the three specimens are similar, joints failure stem from the buckling deformation of top bottom angle steel on the joints area and the beam wing edge buckling; spindle shape and obvious pinch approach phenomenon are shown on all specimens hysteresis curve; the secant stiffness variation of specimen is relatively similar, stiffness degradation is obvious; ductility coefficients are more than 5.5, the equivalent viscous damping coefficients are more than 0.204, the joints energy consumption performance is good and increasing the high-strength bolt diameter can improve the mechanical performance of joints and energy dissipation performance.