Optimization And Effect Evaluation Of Large Machine Tamping Plan For Mountainous Railway Based On Detection Data

Railways play a crucial role in the modern society with rapid economic development.With the continuous development of railways towards high-speed and heavy-duty directions,the maintenance and repair tasks of railway engineering departments are increasing year by year.In order to adapt to this change,the railway industry of various countries around the world is competing to develop large-scale maintenance and repair machinery.The rapid growth of railway operating mileage has effectively promoted the development and progress of maintenance machinery technology.Some developed countries’ railway industries have basically formed a work mode with large-scale maintenance machinery as the main means,The tamping operation of large-scale road maintenance machinery(hereinafter referred to as large machine tamping)plays a very important role in the maintenance and repair process of track maintenance.With the increasing number of large machine configurations and the continuous increase in the total weight of the line,it is necessary to carry out efficient and high-quality large machine compaction operations within the limited skylight time limit.Today,Railway track detection means are diversified.In the face of a large number of detection data,the existing track evaluation index cannot directly guide the large machine tamping.It is necessary to make a specific analysis according to the actual impact of large machine tamping on various detection data.Therefore,the engineering department should make full use of track inspection data,and provide strong technical support for large machine compaction on this basis,in order to better guide the optimization of maintenance plans for large machine compaction and improve the quality of large machine compaction operations.Based on the current research status at home and abroad,this article focuses on track inspection data and uses the 200 meter track section as the basic unit to study the track quality evaluation index.It combines a large number of TQI data analysis of left track,right track,left high and low,right high and low,triangular pit,level,gauge,and other individual items before and after the tamping operation of large machine lines and large machine turnout,Summarize the track quality evaluation index DGTQI and management threshold applicable to the evaluation of large machine compaction.Using DGTQI to compare and analyze the effectiveness of using different measurement methods to guide the operation of large machinery,the operation effects of different compaction vehicle models,and the operation effects of different operation modes of compaction vehicles.By using a linear fitting relationship function,the operation effects and patterns of large machinery in different situations are compared,and the operation modes suitable for the Baocheng Line and Lanyu Line under current conditions are selected,On this basis,combined with the actual situation on site,an optimization plan for the centralized maintenance of the Baocheng Line and the Lanzhou Chongqing Line in 2022 is proposed,and the effectiveness evaluation of the operation quality of the large machine compaction is carried out after implementation.