Extruded Polystyrene Foam Board Void Treatment Technology for Ballastless Track of High-speed Railway in Operation
In view of the void defects of extruded polystyrene foam board for longitudinal slab ballastless track based on the track structure characteristics and the operating railway skylight maintenance conditions,through disease investigation,scheme comparison,process test,material research and development,and test verification,the extruded polystyrene foam board stripping treatment technology of the operating high-speed railway was studied.The results show that the developed polymer grouting material has good high flow state and self-filling property,and can be quickly solidified.After hardening,it has similar mechanical properties as the extruded polystyrene foam board,and has better anti-fatigue and anti-freeze properties.A complete set of remediation technology for high flow and self-filling polymer grouting filling based on the bag-based method is proposed,the space between the extruded polystyrene foam board and the base plate can be filled tightly within the skylight time,and the functions of the extruded polystyrene foam board and the line stability can be restored.
NETL
NSTL
万方数据
