Track Condition Assessment and Typical Defect Analysis for Standard Line Construction of Wuhan-Guangzhou Section of Beijing-Guangzhou HSR
Dynamic inspection of HSRs is an essential step in the dynamic acceptance of railway projects,ensuring that the standard line construction adheres to established standards.Track quality is a key indicator for ensuring the safety of train operations,facilitating smooth level-by-level speed-up tests,and successfully passing line acceptance assessments.In the construction of the safety standard demonstration line of the Wuhan-Guangzhou Section of Beijing-Guangzhou HSR,a section-by-section,multi-train synchronization approach was employed for dynamic inspection.Based on the dynamic track geometry inspection data,the peak over-limit values and unit average values of track quality in the Wuhan-Guangzhou Section were analyzed and assessed.The inspection results demonstrate compliance with the relevant requirements for the construction of standard lines of 350 km/h HSRs.To solve the over-limit problem in turnout areas,the track geometry change rules at different speed levels were analyzed.Following an on-site review,the underlying causes were identified.The frequency domain analysis method was used to compare track quality and wavelength energy improvements before and after maintenance activities.This analysis provides valuable insights and references for the construction of safety standard demonstration lines in the future.
Beijing-Guangzhou HSRstandard line constructiondynamic inspectiontrack conditioneffect analysis
NETL
NSTL
万方数据
