Perspective Constructions of Bridge Crossings on Transport Lines

When designing bridge crossings on highways and railways, classical beam or truss design schemes of structures made of steel or reinforced concrete are usually used, but at present, there is a significant increase in the movement speeds of individual vehicles, axle load and total train weight, and a decrease in temporary intervals between compositions. These factors lead to an increase in dynamic effects and necessitate the use of non-classical design schemes of artificial structures of the transport infrastructure. In the present study, it is proposed to use a three-span arch bridge crossing with a suspension central span structure as the basis for a unified bridge crossing; such an arrangement will allow changing the design length of the central span in a fairly wide range, reduce the total number of supports with an increase in the total length of the bridge crossing, and use such a design as a double-track railway, two- or four-lane road bridge. The calculations and the obtained results of assessing the displacements, internal forces and stresses in the nodes and elements of the proposed bridge crossing design allow us to conclude that the allowable limit magnitudes of the values found are sufficiently uniform load of all the main elements, the absence of pronounced large-scale stress concentrators.

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  • English

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  • Accession Number: 01935005
  • Record Type: Publication
  • ISBN: 9783030379193
  • Files: TRIS
  • Created Date: Oct 23 2024 1:14PM