ДЕЯКІ ПИТАННЯ РОЗРАХУНКУ МОНОЛІТНИХ ЗАЛІЗОБЕТОННИХ ПЛИТ ПРОЇЖДЖОЇ ЧАСТИНИ МОСТОВИХ СПОРУД

Abstract

The problem of determining the life cycle of bridge structures, both at the design stage and during operation, has always been the least studied in the theory of structures, but the most significant in the socioeconomic sense. A correct statement of the estimate of the resource of a structure is complex, since it requires taking into account the variability of the physico-mechanical properties of materials and the patterns of force distribution over time. In addition, it is necessary to take into account the sensitivity to degradation of the structural form of the structure, the operating conditions and the technologies for performing the repair work of each structural element separately and the structure as a whole. The aim of the work is to study the work of a monolithic reinforced concrete slab after major overhaul of bridges. The technological process of the device of reinforced concrete slab has certain difficulties when combining the new reinforced concrete slab with the old (existing) one. After the merger, the plate layout and methods of its calculation are changed. The results of the studies showed that the load-bearing capacity of plates increases almost twofold in comparison with the solutions according to the accepted calculation method. In this case, the operating zones of the reinforcement in each direction overlap, and the strength of the concrete is used completely.