Research of the aerodynamic effect of a high-speed train on pedestrian overpasses
https://doi.org/10.52170/1815-9265-2023-66-28
Abstract
The design and construction of high-speed railways is accompanied by the need to consider certain loads and impacts that are not considered, as a rule, when designing conventional railways. It is one of such special loads, the consideration of which is mandatory when calculating infrastructure facilities of high-speed railways is the load from the aerodynamic impact of moving high-speed rolling stock One of the structures most susceptible to aerodynamic effects are pedestrian overpasses, which is due to their relatively small mass and proximity to a moving train. Performed analysis of domestic and foreign standards and the methods of accounting for the aerodynamic impact from a moving high-speed train showed that they lack a few calculated cases characteristic of pedestrian crossings, road overpasses, concourses, etc., namely, the impact on vertical surfaces located above the dimension perpendicular to the axis of movement of the train.
This paper examines the study of the aerodynamic effect of a high-speed train on a pedestrian overpass. Analysis of the results of the performed series of calculations made it possible to establish the nature of the pressure distribution on the surface of the structure under consideration, including on the frontal surface. The nature and intensity of the force impact on the structure, namely the longitudinal one, was also determined and lifting aerodynamic forces, depending on the position of the moving train and design parameters such as the height above the level of the rail head and the distance from the section under consideration to the axis of movement of the train.
In conclusion, proposals are made to improve the existing methods of accounting for aerodynamic effects.
About the Author
N. A. Labutin
Emperor Alexander I St. Petersburg State Transport University
Russian Federation
Russian Federation
Nikita A. Labutin – Postgraduate, Engineer of the Bridge Laboratory of the Bridge Department
Saint Petersburg, Russia
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Review
For citations:
Labutin N.A. Research of the aerodynamic effect of a high-speed train on pedestrian overpasses. Bulletin of Siberian State University of Transport. 2023;(3):28-40. (In Russ.) https://doi.org/10.52170/1815-9265-2023-66-28
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