Flexural performance of flange joints in assembled single-layer spatial grid structures
Aiming at the popularization and application of the rigid joints of spatial grid structures obtained by the generative method in assembled single-layer grid structure,a assembled flange joint is proposed.Numerical simulation method is adopted to study the flexural performance of the joint outside the mesh shell plane,and the influence of parameters such as the number of flanges,the thickness of flange plate and web,the direction of flange connection,whether to set stiffening ribs and the number of flange web separators on the flexural performance of the joint are discussed and summarized.The results show that assembled flange joints have better flexural stiffness and bear-ing capacity,the flange web stiffening rib is the most important factor affecting the flexural per-formance of the joints.The stiffener with a thickness of 8 mm can effectively improve the ultimate bearing capacity,initial rotational stiffness,maximum elastic bending moment and plastic yield moment of joints.The maximum increment is 69.6％,21.1％,95.0％,and 70.7％,respectively.The secondary factors affecting the flexural performance of joints are the number of flange web sep-arations and the thickness of the flange plate,while the connection direction and number of flanges have little influence on the flexural performance of joints.
万方数据
维普
