| Title | Analysis for lateral deflection of railroad track under quasi-static loading |
|---|---|
| Record ID | 48595 |
| Personal Name Creator |
Jeong, David Y. |
| Source | 10p. in various paginga; Proceedings of the ASME 2013 Rail Transportation Division Fall Technical Conference, October 15-17, 2013, Altoona, PA |
| Corporate Creator | John A. Volpe National Transportation Systems Center (U.S.) |
| Corporate Contributor |
United States. Department of Transportation. Federal Railroad Administration. Office of Research and Development |
| Publisher | American Society of Mechanical Engineers |
| Publication Date | 20131015 |
| Language | English |
| Abstract | This paper describes analyses to examine the lateral deflection of railroad track subjected to quasi-static loading. Rails are assumed to behave as beams in bending. Movement of the track in the lateral plane is constrained by idealized resistance characteristics, while movement in the vertical plane is resisted by a continuous, linear and elastic foundation. These analyses are based on solving the ordinary differential equations for beam deflections. In certain cases, convenient mathematical expressions may be used to represent idealized lateral resistance characteristics and derive closed-form equations to relate lateral force as a function of track lateral deflection. However, in general, the idealized lateral resistance characteristic may be nonlinear, in which case numerical methods are required to examine the lateral load versus track lateral deflection behavior. In these general cases, a Fourier series technique is used to solve the governing equations numerically. The analysis of track lateral deflection subjected to quasistatic loads may be applied to examine track shift. For example, lateral resistance of track may be measured using Track Lateral Pull Tests (TLPT). The Fourier method is also used to examine the relationship between lateral and vertical wheel loads and track lateral shift. |
| Rosap ID | dot:10105 |
| Rosap URL | https://rosap.ntl.bts.gov/view/dot/10105 |
| TRT Terms | Deflection tests; Railroad rails; Railroad ties; Concrete ties; Wood ties; Fourier analysis; Railroad tracks; Wheel loads |
| General Subjects | Track shift; Lateral deflection; Lateral loads |
| Classification | AGR - SAFETY AND SECURITY - SAFETY AND SECURITY; NTL - RAIL TRANSPORTATION - RAIL TRANSPORTATION; NTL - RAIL TRANSPORTATION - Rail Safety; NTL - SAFETY AND SECURITY - Rail Safety; NTL - SAFETY AND SECURITY - SAFETY AND SECURITY |
| Geographical Coverage |
United States |
| Contract Number | RR19A2/LTC41 |
| Report Number | RTDF2013-4710 |
| Availability | Volpe National Transportation Systems Center, Technical Reference Center |
| Resource type | Proceedings |
| URL | https://ntlrepository.blob.core.windows.net/lib/48000/48500/48595/RTDF2013-4710.pdf |
| Format | |
| Database | NTL Digital Repository |