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Contents of the issue
Technical Diagnostics and Non-Destructive Testing 2021 №04
Technical Diagnostics and Non-Destructive Testing #4, 2021, pp. 35-40
Calculated estimation of load-carrying capacity of the main span beams of the E.O.Paton bridge across the Dnipro in Kyiv by nondestructive testing results
O.O. Makhnenko, O.V. Makhnenko
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: firstname.lastname@example.org
The paper deals with of the features of the design and loading parameters of the main longitudinal beams of the E.O. Paton Bridge
across the Dnipro. It is shown that by the results of examinations, the welded joints are in a satisfactory condition, no inadmissible
defects or fatigue cracks were detected in them, but rather considerable local corrosion damage appeared as a result of water flowing
through the beam structures. The constructed finite element model of the main span beam was used to perform a calculated estimate
of its loading and of the change of load-carrying capacity in the presence of local corrosion defects in the zone of the web and lower
flange joint. Results of numerical modeling showed that the presence of these defects does not cause any significant increase of
stresses in the span beam. Analysis of load-carrying capacity showed that although the welded structure of the main span beams of the
bridge has a rather high static strength margin under the action of normative distributed loading, presence of local corrosion defects
of material discontinuity of rather large size considerably lowers the fatigue resistance of welded joints with detected defects that is
dangerous in terms of span structure reliability and, therefore, requires immediate performance of repair operations. 5 Ref., 12 Fig.
Keywords: bridge welded structure, main span beam, load-carrying capacity, corrosion defect, normative load, stressed state,
1. Lobanov, L.M., Kyrian, V.I. (2013) The E.O.Paton all-welded
bridge is sixty years old. The Paton Welding J., 12, 33–38.
2. Poznyakov, V.D., Dyadin, V.P., Davydov, Ye.O., Dmytrienko, R.I. (2021) Evaluation of damage of all-welded longitudinal main beams of the E.O. Paton bridge across the Dnipro river. Ibid., 7, 33-41. https://doi.org/10.37434/as2021.07.06 3. (2009) DBN V. 2.3-22:201Kh: Bridges and pipes.
Basic design requirements. Kyiv, Ministry of Regional
Development of Construction, Housing and Communal
Services of Ukraine [in Ukrainian].
4. (2009) DBN V.1.2-15:2009: Bridges and pipes. Loading and
effects. Kyiv, Minregionbud Ukrainy [in Ukrainian].
5. (1996) Recommendations for Fatigue Design of Welded
Joints and Components. IIW Doc. XIII-1539-96/XV-845-96.