| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 99 === In previous of Taiwan railway, it was difficult to select better railway line due to the limits of low technology, poor materials and machinery, and the characteristics of complex environment and terrain, such as land height difference, steep slope, and sharp turn. Therefore, it lead the train cannot run faster in Taiwan. As the development of technology and improvement of vehicles, Taiwan Railway Administration (TRA), MOTC build new branch railways, straighten the bend lines, alter the radius of curved lines which are also accompanied with rapid-transportation and electrified railway systems. Thus, TRA has to decide to adapt the optimum railway lines. The construction work of railways includes various elements such as transportation purposes, technology abilities, environment issues, and economy. It is very important to establish a complete optimum selection mode to avoid any controversies that may be ascribed to the cost of investment and operation and the influence of areas along the railways are tremendous.
First, the discussion on the current problems of research of line selection and assessment method, then a poll survey based on assessment criteria to collect a complete data, and adapt MCDM concept to analyze the data and choose the scheme. Succeeding, the study analyzes the scheme by using DAHP Analysis to establish estimate structure, applying Fuzzy Theory to quantify the data, and array the order for these schemes by TOPSIS. Finally, to achieving specimen stability requires experiment by Sensibility Analysis to establish the Optimum Selection Mode.
The study is verified for its optimum feasibility by the Experiment of Taipei-Ilan Railway Straight line Project, and the mode could be applied for projects in future.
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