E. O. Paton bridge is 50

摘要

Problems of welded bridge construction, solved under supervision of E. O. Paton, are considered at initial stage of its establishment and, finally, 50 years ago by the construction of unique all-welded bridge across the Dnieper river in Kiev. The ways of assurance of a design service life of all-welded bridges are shown on the basis of basic principles of designing and established main causes of earlier initiation of fatigue cracks in elements of standardized spans, which were used in designing of E.O.Paton bridge. Design solutions of spans and welded connections, eliminating occurrence of secondary stresses and vibrations in them, were recognized determinant. Selection of steel, technology of welding and treatment of welded joints plays an important role in prevention of fractures.