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Railway Dynamic Load Factors Developed from Instrumented Wheelset Measurements
| 题名： | Railway Dynamic Load Factors Developed from Instrumented Wheelset Measurements |
| 正文语种： | eng |
| 作者： | Danial Behnia;Michael T. Hendry;Parisa Haji Abdulrazagh;Albert Wahba |
| 作者单位： | Dept. of Civil and Environmental Engineering Univ. of Alberta Donadeo Innovation Centre for Engineering 9211 116th St. Edmonton AB Canada T6G 1H9;Dept. of Civil and Environmental Engineering Univ. of Alberta Edmonton AB Canada T6G 1H9;Dept. of Civil and Environmental Engineering Univ. of Alberta Edmonton AB Canada T6G 1H9;Dept. of Resilient Ground Transportation National Research Council of Canada Ottawa ON Canada K1V 1J8 |
| 关键词： | Instrumented wheelset (IWS); Dynamic load factor; Railway; Design; Statistical analysis |
| 摘要： | Dynamic load factors (φ) relate the magnitude of vertical wheel-to-rail loads in operation (dynamic loads) to static loads resulting from the weight of the rail car and its contents, as a function of train speed. The φ equations are often used in the selection of rail steel and cross-sections (weight). Equations for φ have been put forth by the American Railway Engineering and Maintenance-of-Way Association (AREMA) and others. A limitation of the existing φ equations is that they have been derived from loads measured at instrumented sections of track and observe the many wheel loads but with constant track conditions. For this study, measurements of dynamic loads from two instrumented wheelset (IWS) as it conducted four passes over a 340 km section of track operated by a North American Class 1 freight railway through the Canadian Prairies. These measurements provided dynamic loads from one loaded freight car over various track structures at differing train speeds. This paper presents the IWS data sets and the variation of dynamic loads between multiple passes of the section of track studied, and the statistical distribution of dynamic loads. New φ equations are developed for tangent track and nontangent track (inclusive of bridges, grade crossings, curves, and switches). |
| 出版年： | 2022 |
| 期刊名称： | Journal of Transportation Engineering |
| 卷： | 148 |
| 期： | 7 |
| 页码： | 04022042.1-04022042.7 |
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