On the Effect of Cohesive Forces on Behavior of Thin-walled Elements in Overlapping Joints

Joints of longitudinal splicing of thin-walled purlins are as a rule a kind of overlapping bolted connections without preloading. The so connected elements are subject to mutual pressure while deforming under applied loads. The cohesive forces between the adjoining surfaces may be important. It can be forces of friction or cohesive forces in a glutinous layer between adjoining areas of profiles. In the joints of rallied runs fixed on girders, pasting can essentially prevent local buckling of flat parts of flanges and walls.Such three-layer structure can also help to avoid crushing and shrinkage of metal in the holes for bolts. Comparative results of numerical analysis for some joint variants with cohesion are considered.