Insulated Joint Failure Investigation Mitigation
| 项目名称： | Insulated Joint Failure Investigation Mitigation |
| 摘要： | Transit agencies that use electrical traction (overhead catenary or third rail) generally use the running rails as part of the circuit to return the negative power to substations. Insulated rail joints (IJs) are special devices in the track that separate train control circuits and traction power segments. Some agencies have experienced significant failures of IJs related to arcing of the traction power negative return currents. With higher currents resulting from AC propulsion, IJ failures have become even more problematic and more frequent across many transit properties. In some locations, the same IJs have failed multiple times in a short span of time. These failures result in unplanned delays to passengers and additional expenses related to repairs and damage to the track, train control systems, and traction power systems, and can contribute to stray currents that damage other infrastructure. As such, there is a great research need into IJ failures with possible mitigation guidelines. IJs are often designed for the freight railroads, with low-voltage/low-amperage train control systems, and may not perform well in a high-voltage/high-amperage (traction power negative return) transit environment. With higher currents resulting from AC propulsion, the failure of current designs needs to be investigated and new guidelines developed, leading to modified existing IJ practices or AC vehicle design. In addition, guidelines are needed as to how to locate and diagnose problematic IJs. The objectives of this research will include (1) identifying potential causes of IJ failures, especially those under high currents resulting from AC propulsion and (2) developing guidelines for maintenance personnel to diagnose these failures and determine the best mitigation of the root causes. |
| 状态： | Proposed |
| 资金： | 250000 |
| 资助组织： | Transit Cooperative Research Program<==>Federal Transit Administration |
| 项目负责人： | Parker, Stephan A |
| 开始时间： | 20201123 |
| 主题领域： | Energy；Maintenance and Preservation；Public Transportation |
相关文献
- Rapid Bridge Deck Joint Repair Investigation
- Durability of Transverse Sawcut Joints (Year 2)
- Guidelines for Maintaining Small Movement Bridge Expansion Joints
- Utilizing Graceful Failure As An Opportunity for Flood Mitigation Downstream to Protect Communities and Infrastructure
- Effects of climate change on soft clay slopes
- Failure Modes Analysis of UDOT's MSE Wall Inventory
检索历史
应用推荐
