铁路有砟轨道下沉破坏研究进展

轨道累积下沉是轨道不平顺发生、发展的根源,是各种线路病害的动力源,由此形成以轨道下沉研究为主体的轨道下沉破坏理论。轨道下沉破坏研究是轨道管理基础研究工作中的重要内容。国内外对有关轨道累积下沉特性及下沉影响因素等问题给予高度重视,曾进行广泛研究。本文综述国内外关于轨道下沉破坏的研究历史与现状,主要包括轨道下沉试验研究、轨道下沉破坏仿真计算研究和轨道下沉与轨面高低不平顺发展关系研究。通过总结和分析,明确国内外研究状况和发展动向,对比国内轨道管理基础研究状况,指出我国为适应现代轨道养护维修管理需要在轨道下沉破坏方面进一步重点研究的问题。

Advance in Track Settlement Destruction of Ballasted Railway Track

Accumulative track settlement is the source of occurring and growth of track irregularites and various railway line diseases.So the track settlement destruction theory comes into being with track settlement as the principal part of research.Track settlement destruction constitutes the important contents of fundamental investigations of track management.Many domestic and overseas investigations concentrate on the characteristics and influence factors of accumulative track settlement.This paper summarizes the history and status of studies on track settlement destruction at home and abroad mainly in respect of track settlement tests,track settlement simulation and the relationship between track settlement and growth of track vertical-profile irregularity.The present situation and developing tendency of track settlement research are made clear through the above analysis.Major subjects for future research of track settlement destruction are suggested to suit the demands of modern track maintenance and management.