| Title | Thermal Buckling of Straight Tracks: Fundamentals, Analyses, and Preventive Measures |
|---|---|
| Record ID | 50538 |
| Personal Name Creator |
Kerr, Arnold D. |
| Source | 58p. in various pagings |
| Corporate Creator | Princeton University |
| Corporate Contributor |
John A. Volpe National Transportation Systems Center (U.S.); United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development |
| Publisher | United States. Department of Transportation. Federal Railroad Administration |
| Publication Date | 19780901 |
| Language | English |
| Abstract | This report, written mainly for the practicing railroad engineer, explains the phenomenon of thermal buckling of straight tracks, shows how to analyze it, and describes measures for preventing it. Following an introductory discussion of track buckling problems caused by a temperature increase in the rails, the report describes the distribution of axial forces in the track rails caused by temperature changes. It reviews briefly track buckling test results obtained by a number of railroads. The method of analysis for the determination of a "safe temperature increase", recently developed by the author, is then discussed. To simplify the use of this analysis, the results are presented graphically for a wide range of track parameters, and the use of the presented graphs is demonstrated with examples. It is shown how the graphs may also be used for the determination of the rail installation temperature. The paper concludes with a description of track tests for obtaining the needed parameters, and a discussion of measures adopted by various railroads to prevent thermal track buckling. |
| Rosap ID | dot:11917 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/11917 |
| TRT Terms | Ballast crib; Buckling; High temperature; Maintenance of way; Railroad tracks; Test tracks; Thermal stresses; Track laying; Welded rail |
| Classification | AGR - INFRASTRUCTURE - Railroads; NTL - RAIL TRANSPORTATION - RAIL TRANSPORTATION; NTL - RAIL TRANSPORTATION - Rail Safety; NTL - SAFETY AND SECURITY - Vehicle Design; NTL - SAFETY AND SECURITY - Rail Safety; NTL - SAFETY AND SECURITY - SAFETY AND SECURITY |
| Geographical Coverage |
United States |
| Contract Number | DOT-TSC-1149 |
| Report Number | FRA/ORD-78/49; DOT-TSC-FRA-78-14 |
| Resource type | Tech Report |
| URL | https://ntlrepository.blob.core.windows.net/lib/50000/50500/50538/DOT-TSC-FRA-78-14.pdf |
| Format | |
| Database | NTL Digital Repository |