Numerical Investigation of Impact Load Effects on Railroad Track Systems
| 项目名称： | Numerical Investigation of Impact Load Effects on Railroad Track Systems |
| 摘要： | The objective of this project is to use a quantitative approach to addressing design factors to provide economies in future concrete crosstie designs based on probability of exceedance and other metrics that relate to the residual capacity and factors of safety for rail transit infrastructure. Increases in the number of new rail transit projects in North America has generated renewed interest in optimizing the design of the track infrastructure and its components. In North America, many track component design guidelines use historical wheel loads and design loading factors. These design factors may not be representative of the loading experienced on rail networks today, leading to over-designed infrastructure components. Therefore, this project aim to lay the groundwork for an improved understanding of the loading environment entering the track structure using wheel loads data obtained from recently deployed field instrumentation and existing wheel impact load detectors (WILDs). This study evaluates existing design impact factors and assess their effectiveness. New design loading factors will be proposed to represent the rail transit wheel loading environment more accurately based on the analysis from this project. |
| 状态： | Active |
| 资助组织： | Office of the Assistant Secretary for Research and Technology |
| 项目负责人： | Edwards, Riley |
| 主要研究人员： | Dersch, Marcus S |
| 开始时间： | 20170101 |
| 预计完成日期： | 20200915 |
| 实际结束时间： | 0 |
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