ANALYSIS OF STEEL PLATE GIRDERS SUBJECTED OF PATCH LOADING WITH GEOMETRICAL AND STRUCTURAL IMPERFECTIONS

10th International Congress of the Serbian Society of Mechanics (18-20. 06. 2025, Niš) [pp. 261-270]

AUTHOR(S) / АУТОР(И): Turnić Dragana , Spasojević Šurdilović Marija , Živković Srđan , Petrović Žarko , Petronijević Predrag  

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DOI: 10.46793/ICSSM25.261T

ABSTRACT / САЖЕТАК:

The behavior of welded steel I-girders presents a complex stability and elastic-plastic problem. The girders are loaded over a short length of the flange and within the plane of the web, under either concentrated or uniformly distributed loads, commonly referred to as patch loading. This study analyzes welded steel I-girders both with and without longitudinal web stiffening. The girders, or sections of the girders, are not perfectly flat in terms of their geometry, and the materials from which the girders are made exhibit certain deviations, referred to as geometric and structural imperfections. These imperfections can influence the behavior of the girders, and they are accounted for in this research. The load was progressively increased until the ultimate load capacity was reached, which was characterized by the buckling of the web. The analysis was conducted using the ANSYS software package, and the results were compared with experimental data from the literature.

KEYWORDS / КЉУЧНЕ РЕЧИ:

steel I girders, patch loading, ultimate load capacity, imperfections

ACKNOWLEDGEMENT / ПРОЈЕКАТ:

This research was supported by the Ministry of Science, Technological Development and Innovation of the Republic of Serbia under the Agreement on the Implementation and Financing of Scientific Research Work of the NIO in 2025 – Registration number: 451-03-136/2025-03/ 200095 dated 04/02/2025.

REFERENCES / ЛИТЕРАТУРА:

  • Markovic N., Hajdin N, A Contribution to the Analysis of the Behaviour of Plate Girders subjected to Patch Loading, Journal of Constructional Steel Research. Vol. 21, pp. 163-173, 1992.
  • Bergfelt A., Patch loading on a slender web. Influence of horizontal and vertical web stiffeners on the load carrying capacity, Department of Structural Engineering, Chalmers University of Technology, Publication S79, Goteborg, 1979.
  • Braun B., Stability of steel plates under combined loading, Doctoral Thesis, Nr 2010-3, Institut für Konstruktion und Entwurf Stahl-Holz- und Verbundbau, Universität Stuttgart, Germany 2010.
  • Davaine L., Formulations de la réststance au lancement d’une âme métallique de pont raide longitudinalement, Doctoral Thesis D05-05, INSA de Rennes, France, 2005.
  • Ceranic A., Bendic M., Kovacevic S., Salatic R., Markovic N., Influence of patch load length on strengthening effect in steel plate girders, Journal of Constructional Steel Research, Vol. 195, pp. 107348, Elsevier, 2022.
  • Craciano C., Kurtoglu A., Kövesdi B., Casanova E., Patch loading resistance prediction of plate girders with multiple longitudinal stiffeners using machine learning, Steel & Composite Structures: An International Journal, Vol. 49, No. 4, pp. 419-430, Techno-press, 2023.
  • EN1993-1-5:2006 Eurocode3: Design of steel structures, Part1-3: Plated structural elements, November 2006, ISBN 0580496678.
  • ANSYS 15, LS-DYNA Keyword user`s manual, Vol I, II, III, February 2013, Version R7.0, Livermore Software Technology Corporation.
  • Casanova E, Graciano C., Chacón R., Patch loading resistance of steel plate girders stiffened with triangular cell flanges, Structures, Vol. 38, pp. 993-1004, Elsevier, 2022.
  • Kovacevic S., Markovic N., Experimental study on the influence of patch load length on steel plate girders, Thin-Walled Struct. 151, pp. 106733, 2020.
  • Rogač M., Aleksić S., Lučić D., Influence of patch load length on the ultimate resistance of I-girders: state-of-the-art review, Conference: Association of Structural Engineers of Serbia, pp.174-183, Vrnjačka Banja, 2024.
  • Sy Hung Mai, Viet-Linh Tran, Duy-Duan Nguyen, Viet Tiep Nguyen and Duc-Kien Thai, Patch loading resistance prediction of steel plate girders using a deep artificial neural network and an interior-point algorithm, Steel and Composite Structures, Vol. 45, No 2, pages 159-173, 2022.
  • Kumar S. A., Sofi F. A., Bhat J. A., Estimation of patch-loading resistance of steel girders with unequal trapezoidal web-corrugation folds using nonlinear FE models and artificial neural networks, Structures, Vol. 48, p.p. 16551-1669, 2023.
  • Marković N., Izbočavanje limenih nosača pod dejstvom lokalnog opterećenja, Doktorska disertacija, Građevinski fakultet u Beogradu, 2003.
  • Turnić D., Živković S., Spasojević Šurdilović M., Milošević M., Igić A., Influence of Geometrical and structural imperfections of steel plate girders, Facta Universitatis, Series: Architecture and Civil engineering, Vol. 19, No 2, 2021, pp.171-182, ISSN: 2406-0860.
  • Johansson B., Maquoi R., Sedlacek G., Müller C., Beg D., Commentary and worked examples to EN1993-1-5, Plated structural elements, JRT Scientific and Technical Reports, 2007.
  • BSK07, Boverkets handbok om stålkonstruktioner BSK 07, ISSN: 1400-1012 (in Sweden), 2007.
  • Turnić D, Marković N., Igić T., Stress analysis of steel plate girders subjected to patch loading in elastoplastic domain, Tehnički vjesnik, Vol.28. No.4, 2021., ISSN 1330-3651.
  • Turnić D., Nelinearno ponašanje i granična nosivost limenih nosača opterećenih lokalizovanim opterećenjem, doktorska disertacija GAF Niš, 2016.
  • Turnić D., Marković N., Igić T., Nikolić V., Spasojević Šurdilović M., Analysis of material non-linearity of steel girders subjected to patch loading, Tehnički vjesnik, 2017, vol.24. No.6, p.p. 1991-1998.