| Summary: | 碩士 === 國立高雄應用科技大學 === 土木工程與防災科技研究所 === 105 === The information of track alignment irregularity is obtained by many random operation situations. After railway construction has completed, track geometric alignment will be continue deformation due to wheel/rail interaction. Then, there are many effects such as train operation safety, stability, riding comfort, wheel/rail life and circumstance noisy to occur. For ensuring safety operation and providing stable and comfortable service, track alignment regularity is very important work for rail maintain management.
The lasting external load added on the rail to lead to deformation or deflection, which is called "track alignment irregularity". There are five major track irregularities to bring the train operation with wagging, yawing, twisting and nodding. The rail structure will be damaged by the excess lateral and longitudinal forces.
This study is focused on the occurrence probability of track alignment irregularity. The result showed that track interval and elevation for irregularity are more appeared on occurrence probability. Although the train is no driving safety, but there are riding comfortable problems.
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