Mechanical Performance Test of Multi-parameter T-steel Nodes
In order to investigate the influence of flange plate thickness,steel strength,stiffening rib and bolt preload on the ultimate load carrying capacity,yield load,initial stiffness and internal force of bolt of T-steel node,T-steel node tensile tests were carried out,and displacement-load curves and load-stress curves of T-steel node were obtained.The results show that increasing the thickness of the flange plate can improve the bending stiffness and stability of the steel node;The greater the strength of the steel,the slower the growth of the bending stress of the bolts in the steel node,and the faster the growth of the axial stress;Increasing the bolts and the stiffening ribs can improve the bearing capacity of the steel node,but it will reduce the deformation capacity;A moderate increase in the preload force of the bolt is conducive to improving the initial stiffness of the steel node and reducing the bending deformation.The ratio of the thickness of the flange plate to the bolt diameter should not be greater than 1;Appropriately increasing the bolt preload can improve the initial stiffness of the ribbed T-steel node;Stiffening ribs can be added to improve the overall performance of the T-steel node in the design of beam-column nodes.
万方数据
维普
