Вплив помилок проєктування, будівництва й експлуатації на несну здатність пішохідного мосту

Abstract. Problem. Many scientific works are dedicated to the issues of the impact of bridge design, construction, and operation errors on their life cycle. Modern studies of bridge conditions and the influence of negative factors on their load-bearing capacity illuminate many issues, which determined the interest in assessing the impact of such factors on the load-bearing capacity of a pedestrian suspension bridge in the city of Kharkiv. Goal. Based on the results of inspections of the actual condition of the bridge and theoretical calculations, the study investigates the influence of operation quality, errors in design or construction, and other factors on load-bearing capacity. To determine how much a detail or defect that is minor in size but possibly significant in impact reduces the load-bearing capacity. Results. Stresses in the main beams of span structures, tie rods, cables, and support elements are close to but do not exceed the calculated strength of the materials from which they are made. However, taking into account corrosion, defects, and poor-quality connections between elements, strength conditions are not met. Practical value. Errors at the stages of design, installation, and operation significantly reduce the load-bearing capacity of the bridge, creating a potential threat to pedestrian safety. The main factors affecting the reduction of structural strength are corrosion, deck damage, support deformations, and poor-quality welded joints. Based on calculation results, it was established that individual structural elements operate at the limit or beyond permissible loads. The inspection revealed a critical need for repair or construction of a new structure.