Conditions Leading to Overturning of Empty Containers under the Influence of Wind Load
https://doi.org/10.30932/1992-3252-2019-17-50-61
Abstract
The article reveals the problems of traffic safety violations resulting from the overturning of empty containers on winddependent sections of railways.
The paper refers to examples of several traffic accidents caused by detachment of containers of various types from specialized flat wagons under the influence of a squally wind of various speed. The increase in the number of such traffic accidents urges development of a procedure for safe transit of freight trains, transporting empty containers, if a dangerous weather event may be forecasted along their route.
The objective of this study is to develop an engineering method for determining the conditions leading to overturning of empty containers from specialized railway wagons under the wind load.
Based on the methods of theoretical mechanics, using the moment of force equation as applied to the container relative to the axis of its rotation, the authors found the conditions that cause container overturning under the influence of wind load.
An expression was obtained that allows one to determine the minimum wind speed, which leads to the overturning of an empty container. The article presents the calculation of wind speed leading to the overturning of empty containers of various types for straight and curved sections of the railway track, considering the maximum superelevation (cant) of the outer rail.
The obtained results are confirmed by the mathematical modelling of stability of fastening of empty containers by LLC Hexa requested by PJSC Transcontainer.
Based on the cartographic information, the main winddependent regions of the Russian Federation were identified where transport accidents caused by overturning of empty containers might occur.
The results of the study can contribute to development of universal technical solutions for different world regions to ensure stability of an empty container when exposed to wind loads.
The paper refers to examples of several traffic accidents caused by detachment of containers of various types from specialized flat wagons under the influence of a squally wind of various speed. The increase in the number of such traffic accidents urges development of a procedure for safe transit of freight trains, transporting empty containers, if a dangerous weather event may be forecasted along their route.
The objective of this study is to develop an engineering method for determining the conditions leading to overturning of empty containers from specialized railway wagons under the wind load.
Based on the methods of theoretical mechanics, using the moment of force equation as applied to the container relative to the axis of its rotation, the authors found the conditions that cause container overturning under the influence of wind load.
An expression was obtained that allows one to determine the minimum wind speed, which leads to the overturning of an empty container. The article presents the calculation of wind speed leading to the overturning of empty containers of various types for straight and curved sections of the railway track, considering the maximum superelevation (cant) of the outer rail.
The obtained results are confirmed by the mathematical modelling of stability of fastening of empty containers by LLC Hexa requested by PJSC Transcontainer.
Based on the cartographic information, the main winddependent regions of the Russian Federation were identified where transport accidents caused by overturning of empty containers might occur.
The results of the study can contribute to development of universal technical solutions for different world regions to ensure stability of an empty container when exposed to wind loads.
About the Authors
V. G. Popov
Russian University of Transport
Russian Federation
Russian Federation
D.Sc. (Eng), Professor, Head of the Department of Chemistry and Engineering Ecology
Moscow
A. V. Matesheva
A. M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences
Russian Federation
Russian Federation
D.Sc. (Eng), Senior Researcher
Moscow
Ph. I. Sukhov
Russian University of Transport
Russian Federation
Russian Federation
Ph.D. (Eng), Associate Professor at the Department of Chemistry and Engineering Ecology
Moscow
Yu. K. Bolandova
Russian University of Transport
Russian Federation
Russian Federation
Ph.D. student at the Department of Chemistry and Engineering Ecology
Moscow
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Review
For citations:
Popov V.G., Matesheva A.V., Sukhov P.I., Bolandova Yu.K. Conditions Leading to Overturning of Empty Containers under the Influence of Wind Load. World of Transport and Transportation. 2019;17(6):50-61. https://doi.org/10.30932/1992-3252-2019-17-50-61
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