THE EFFECT OF GAPS ON THE STRESS CONDITION OF END-PLATE CONNECTIONS

The article discusses typical defects of end-plate connections. The modeling of joints with a given defect was performed, and the calculation of the finite element method of a full-size joint and elementary models end-plate connections was performed. The work of the bolt group and the end-plate was analyzed, taking into account defects. The features of the behavior of tension-controlled bolts operating as part of joints characteristic of the considered design solutions are determined. The quantitative nature of the distribution of forces and stresses across the bolts and the body of the end-plates of the joint is shown, depending on various combinations of the stiffness (thickness) of the end-plate and the diameter of the bolt. According to the results of the study of the operation of the bolts, it was concluded that there is no influence of the latter on the operation of the joint in the considered range of thicknesses, diameters and defects. As a result of the study of the end-plate body, it was determined that the bearing capacity of the joint is mainly determined by the strength of the bolt group. To ensure operational suitability, end-plates with certain parameters should be use.