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Vol.25, No.3, 2025, pp. 501–508 |
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NUMERICAL MODEL AND EXPERIMENT TO DETERMINE STRESS AND DISPLACEMENT OF STEEL BOX GIRDER BRIDGE STRUCTURE Ba Thang Phung1
1) University of Transport Technology, Hanoi, VIETNAM B.T. Phung https://orcid.org/0009-0003-5796-3465 2) Le Quy Don Technical University, Hanoi, VIETNAM T.C. Nguyen https://orcid.org/0000-0001-9723-5161 , *email: trongchuc.nguyen@lqdtu.edu.vn 3) University of Transport and Communications, Hanoi, VIETNAM H.H. Nguyen https://orcid.org/0009-0007-0564-2159
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Abstract The need to develop the city's transportation system is growing in tandem with the development of society. Congestion in urban areas is a difficult problem that has been and continues to be addressed. Building overpass systems at intersections is one way to quickly solve that problem. Because of the shorter construction time, steel overpasses are more convenient in the city than pre-reinforced concrete overpasses. Therefore, steel box girders have been widely used for straight and curved highway and transit structures over the last decade. To meet the demand for such structural elements, design criteria had to be developed. Despite the fact that many steel bridges have been built, there have been few studies on how this structure works, particularly the warping effect in the steel beam section. The study presents modelling and experiments to determine the stress and displacement of a steel box bridge structure taking into account the section warping effect. Results demonstrate that when the plate element model is used to model, the results are reliable. Research findings will be used as a reference for steel box girder bridge structure design projects in Vietnam. Keywords: • steel box girders • warping section • stress • displacement • numerical model • experiment |
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