COMPARISON AND CALCULATION OF TUBULAR MULTI-PLANAR JOINTS BY DOMESTIC AND FOREIGN CODES

In Code for Design of Steel Structure(GB 500172003),only the influence of axial force can be considered as the calculation of bearing capacity of tubular multi-planar joint,and that of web member's bending moment on the bearing capacity can not be considered.In Hollow Tube Structure Connecting,the formula is mainly refers to Eurocode 3,which is used to calculate capacity of single-planar tubular joint under combined forces.Therefore,it can be used as reference for design.Compared with the formula of GB 500172003,calculating the bearing capacity of tubular joint by the formula in Eurocode 3 is safe.According to Eurocode 3,the tubular joint is divided into several single-planar joints,and then checking calculation is proceeded for everyone.Using ANSYS software to make a solid finite element model for the tubular joint and the nonlinearity is analyzed.Simulation results indicate that the design of tubular joint meets the requirements.