Introduction. To spread the practice of transport construction of road structures made of corrugated metal under the embankment, which have long been and successfully used in different countries of the world instead of small and medium-sized bridges, overpasses, culverts of traditional types made of massive structures, it is important to have relevant, sufficiently developed regulatory and methodological documents and manuals necessary for their design, in particular in terms of calculations.
Issues. Current regulatory and methodological documents on the design of corrugated metal road structures lack data on the analytical calculation of such arched structures (there is only a reference to the use of the finite element method). However, such arch-shaped structures made of corrugated metal under the road embankment are a fairly rational alternative to small bridges made of typical massive structures due to more attractive technical and economic indicators.
Purpose and objectives. Providing a proposal for the development of a methodology for simplified analytical calculation of the considered structures, with a list of all the components necessary for its practical use, partially described earlier in separate articles, with the addition of a numerical example of the use of this methodology — is the main purpose and objective of this work.
Research methods and results. Computational and theoretical studies have supplemented the ideas about the features and regularities of the operation of a flexible arch vault (arch, according to the conditions of a plane problem) under a road embankment, which are the basis for calculations, and some clarifications and simplifications have been added (regarding the definition of the equivalent temporary load, regarding the soil resistance scheme, etc.).
Conclusions. The possibility of compiling a methodology for practical calculation of arched road structures made of corrugated metal based on well-known laws of structural mechanics, soil mechanics and underground structures and a simple, understandable calculation scheme, which is close to the scheme of operation of such a structure in full-scale and laboratory conditions, is shown.
