| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 100 === Special track is not only a specialized and critical item in track work but also an important facility that ensures train operation safety as well. Besides a great deal of interface relevance with other subsystems, the quality of special track may also influence operation safety and train comfort for passengers. Special track is usually a critical path activity and construction logistic hub; therefore, how to shorten construction duration and maintain a certain quality is the key to success of MRT track work. Unlike normal track, special track has some distinguishing features such as various types, complicated structure, shorter service life, limited train speed, lower operation safety and higher maintenance needs, so how to prolong service life and maintain basic operation safety is a critical issue of trackwork engineering. No matter in the area of ballasted track, direct fixation track or floating slab track, the construction of special track should follow certain step-by-step procedures, each of which has strict requirements. If the step-by-step construction management procedures are followed and the quality and accuracy of the construction are seriously controlled, special track installation procedures could be simplified, the safety requirements and comfort when train operating can be satisfied.
Taking Taipei MRT special track as an example and the past construction experience as a base, this study proposes the management strategies for special track construction by reviewing references and consulting specialists. In terms of ballasted track, DF track and floating slab track, respectively, in Taipei MRT system, the optimal management strategies and final suggestion/conclusion are proposed by considering the construction processes, including interface, method, design and procurement, and by evaluating each step of the construction. I hope that this study could be one of the references for the execution of metro system trackwork construction in Taiwan in the future.
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