Monitoring for maintenance of a ballasted high-speed railway
报告人：David Milne(Research Fellow, University of Southampton)
Summary: The talk will provide information about on-going rail research at the University of Southampton before focusing on the equipment and analysis techniques developed for informing and evaluating maintenance of isolated track bed defects on a ballasted high-speed railway. Different options for instrumentation are examined and low-cost options suitable for large or long-term monitoring are validated. Large or long-term deployments will generate large volumes of data, methods of processing this data are presented. Data from monitoring of an operational high-speed railway is used to demonstrate how these techniques can be used to inform and evaluate maintenance leading to a more sustained repair by understanding the track behaviour and targeting the sleeper support conditions.
Speaker: Dr David Milne is a Research Fellow in Railway Track Infrastructure at the University of Southampton within the School of Engineering. Working on the track to the future programme grant. His research interests relate to understanding the performance and properties of railway track using lineside monitoring techniques. Particularly developing signal processing to interpret large volumes of track vibration data from measurements made on operational railways. He has worked with Network Rail High Speed, the infrastructure manager of High Speed One, the only high-speed railway in the United Kingdom with a permissive speed of 300 km/h, to develop lineside monitoring techniques and equipment that have helped to inform and evaluate innovative maintenance techniques where conventional methods proved ineffective. His current research focuses on understanding the real variability of track stiffness and its impact over longer lengths of track and trialling alternative track-bed materials in the field.