Review article

At the nodal application of the load in the operated lattice trusses in the structural elements in addition to the main, longitudinal, forces there arise additional forces, namely, bending moment and shearing force. The introduction of hinges into the design model greatly simplifies the design calculation, but increases the level of its conditionality. Stress raisers appear at the nodes of the truss, which are taken into account by the accepted safety factors. Thereby, the reliability of the calculation and the compliance of the adopted model with the actual construction are reduced. Thus, selecting the proper solution of the problem of the nodal joint rigidity is an urgent and sought-after task.