Analysis and Full Scale Experiment on Ultimate Capacity of Special-shaped Circular Tubular Joints

Based on the compare of the ultimate capacity analytical method of the circular tubular joint in the gymnasium roof,the exact method and the design advice were pointed out.The non-linearity numerical simulation and the calculation according to the criterion focused on the ultimate capacity and the failure pattern,which is validated by the full-scale experiment.The joint was divided into four kinds of basic joints as the calculation model.The result indicates that the stress non-homogeneity of the main pipe is notable,and the breakage is due to the excess transform of the tension brace members whose area should be increased.It is found that the numerical simulation is an effective method to make sure of the working performance and the ultimate capacity.