Bearing capacity of a friction joint of a truss chord with construction defects

Bolted joints of structures with high-strength bolts are widely used in construction. In the article, bearing capacity of a friction joint with various thicknesses of joint elements is analyzed by the example of a real construction object. Results of mathematical modeling of the bending of junction plates as well as results of experimental researches of samples of friction joints and test results for the impact elasticity of the plates with different values of residual plastic deformation are given. It is shown that when closing a gap equal 1,0 mm in the bending zone, stresses in the plate exceed the yield limit of steel. When closing the allowable gap equal 3,0 mm, there is a conditional plastic hinge appears in the bending zone.