Příhradový trámový železniční most s dolní ortotropní mostovkou

Abstract

The subject of the bachelor’s thesis is to deepen the knowledge about truss girder railway bridges with orthotropic deck and to calculate the load-bearing capacity of the main members. The internal forces were determined both by analytical calculation and by commercial software Dlubal rFem. The structural arrangement of truss girders and bridge decks of railway bridges and assessment of the main structural elements according to EC 3 is described in the thesis. The work also discusses the possibilities of reconstruction of steel bridge structures. Main part of the thesis deals with a creation of a 2D frame algorithm, which is used for calculation of the internal forces and stability using the general deformation method. It was found that the resulting values of the internal forces calculated analyticaly corresponds to those determined by the commercial Dlubal rFem software. The analytical algorithm has 99.7 % accuracy with the results obtained using 2D model in the Dlubal software.