Review article

In order to develop recommendations for assessing the bearing capacity of crane beams with fatigue cracks in the wall, the authors have carried out numerical studies using finite element modeling. The studies were implemented taking into account the damaged wall deformation causing redistribution of stresses in the beam section. There are shown dependences of the increase of normal stresses in the compressed belt and maximum tangential stresses in the wall, depending on the length of the crack, its position in the compartment and the wall flexibility. There has been worked out an engineering technique for assessing the strength of the damaged crane beam envisaging application of coefficients characterizing fatigue cracks in the wall.