Mechanical Behavior Research on the Double Angle Bolts Tube-Plate Joints of Concrete-Filled Steel Tubular Lattice Wind Turbine Tower

Abstract:

Through the experiment of the six node models, this article obtained the axial force-deformation curves of the web members, the equivalent stress distribution curves under different loads of the tower within the scope of the node plate length. The result shows that: the stress level in the node area increases with the growth of the radius-thickness ratio; the node without stiffening ribs prone to appear node plate out-of-plane buckling with a lower carrying capacity, and the pillar got a higher stress concentration at the front end of the node plate; while the exists of the stiffening rib can not only improve the bearing capacity of the tube plate nodes, but also avoid the early out-of-plane buckling of the node plate, the failure mode of these node is compression web member buckling failure, meanwhile, the distribution of the tower equivalent stress at the node area gets much more uniform. It follows that, the bearing capacity of the node is not only associating with the thickness of the node plate and the radius-thickness ratio, but also suffering the important influence of stiffening rib.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 727-731
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.727
• Online since: July 2014
• Authors: Yang Wen*, Shu Tan Liu, Gong Ke Xia
• Keywords: Bolts Stitching Node, CFST, Double Angle, Experiment Research, Ribbed Stiffener

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