2026, Vol. 13, No. 2. - go to content...

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DOI: 10.15862/01SATS226 (https://doi.org/10.15862/01SATS226)

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Rybakov S.V., Piskunov A.A., Erofeev M.N. An experimental study of the joint operation of a composite main beam and a monolithic plate of the roadway of road bridges. Russian Journal of Transport Engineering. 2026; 13(2). Available at: https://t-s.today/PDF/01SATS226.pdf (in Russian). DOI: 10.15862/01SATS226

An experimental study of the joint operation of a composite main beam and a monolithic plate of the roadway of road bridges

Rybakov Sergey Viktorovich
Russian University of Transport (MIIT), Moscow, Russia
E-mail: Rybakov.sv@bk.ru
ORCID: https://orcid.org/0009-0000-0810-7994
RSCI: https://elibrary.ru/author_profile.asp?id=1178306

Piskunov Alexander Alekseevich
Russian University of Transport (MIIT), Moscow, Russia
E-mail: a.piskunov52@mail.ru
ORCID: https://orcid.org/0000-0003-2606-9068
RSCI: https://elibrary.ru/author_profile.asp?id=807388

Erofeev Mikhail Nikolaevich
Russian University of Transport (MIIT), Moscow, Russia
E-mail: kventr@list.ru
ORCID: https://orcid.org/0000-0002-1048-3574
RSCI: https://elibrary.ru/author_profile.asp?id=836604

Abstract. In the article, the authors present the results of an experimental study of a joint assembly of a composite main beam and a monolithic plate of the roadway of road bridges. The relevance of the work is due to the need for experimental substantiation of the proposed analytical methodology for calculating the elements of the union node of the hybrid bridge superstructure. The purpose of the study was to verify the calculation methodology and establish the actual bearing capacity, deformability and nature of the node failure under static loading. The paper provides information about the prototype design, materials, process and assembly procedure, measuring system and test program. The technological issues of the choice of steels, weldability of the elements, contact of the surfaces of the composite and the structural elements of the joint, and the specifics of the placement of measuring equipment are considered.

The experimental program included three phases with continuous recording of vertical displacements and discrete recording of transverse displacements in the joint seam. It was found that the main part of the initial inelastic deformations accumulated in the first cycles of the first and second phases, after which the operation of the node stabilized. Three characteristic load levels are identified — design load, first slip load, and destructive load. It is shown that the limiting state was determined by the composite material outside the abutment zone and developed gradually, without catastrophic destruction, while the elements of the association themselves received plastic deformations. The results of the experiment were compared with known studies, and a conclusion was made about the operability of the proposed design of the integration node and the applicability of the calculation methodology. The prospects for further research and improvement of the design are formulated.

Keywords: polymer composite materials; hybrid spans; connecting device; superstructure stop; bridges made of polymer composite materials; problems of composite materials application; superstructure made of polymer composite materials; experimental substantiation; methodology

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