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Quantifying Bending Moments in Rail-Transit Concrete Sleepers
| 题名： | Quantifying Bending Moments in Rail-Transit Concrete Sleepers |
| 其他题名： | AREMA(American Railway Engineering and Maintenance-of-Way Association).(2016).Manual on railway engineering,Landover,MD. |
| 正文语种： | 英文 |
| 作者： | J. Riley Edwards |
| 关键词： | Concrete sleeper;Field instrumentation;Rail transit;Light rail;Heavy rail;Flexural strength;Bending moments |
| 摘要： | With use of concrete sleepers increasing for rail-transit applications in the United States, it is becoming more critical to quantify their revenue service flexural demands to improve sleeper design and maintenance practices. Rail-transit concrete sleeper bending moment field data were collected and processed to address topic areas relating to (1) overall field bending moment magnitude relative to design moments; (2) moment variation from sleeper to sleeper resulting from support conditions; and (3) seasonal variations in moments. Data from field locations on light and heavy rail-transit properties show levels of reserve flexural capacity (factors of safety) that reach as high as 6, significant sleeper-to-sleeper variability attributable to support conditions that can be as high as 100％, and seasonal variation in bending moments that is measurable but far lower than daily variability caused by temperature by a factor of 2. These data provide a valuable baseline for the future generation of mechanistic design standards for track infrastructure components. |
| 出版年： | 2018 |
| 论文唯一标识： | P-72Y2018V144N03007 |
| 英文栏目名称： | TECHNICAL PAPERS |
| doi： | 10.1061/JTEPBS.0000125 |
| 期刊名称： | Journal of Transportation Engineering |
| 拼音刊名(出版物代码)： | P-72 |
| 卷： | 144 |
| 期： | 03 |
| 页码： | 55-62 |
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