Page 8 - 捷運技術 第39期

2 常岐德 鄭國雄 臺北捷運軌道工程之回顧與展望

Retrospective and Vision of Taipei MRT Trackwork

1
Chi-Te Chang Guo-Shiung Zheng 2

Abstract

Since the Taipei MRT project was launched in 1977, trackwork has been implemented for
about 21 years. The trackwork is generally divided into two systems: one is a steel-wheeled system
and the other a rubber-tyred system. Apart from the in-operation Muzha medium-capacity line

which applies rubber-tyres running directly on steel and concrete surfaces and its extension, the
Neihu line, which is set to come into operation soon and adopts rubber-tyred wheels running on
steel or steel and concrete surfaces, the other Taipei MRT lines are all designed to use steel wheels
running on steel rails. The Taipei MRT lines which have been completed include the Danshui,

Xindian, Nangang/Banqiao, and Tucheng lines with a total of 241 kilometers (including depots) in
length. Additionally, trackwork is being implemented on the Xinzhuang line, Luzhou line, Nangang
eastern extension, Xinyi line, and Songshan line. During the construction process the trackwork
team has been through many hardships that could only be overcome gradually and with great effort.

In order to reduce environmental pollution and solve problems such as noise and vibration,
DORTS performed thorough analysis and planning on the floating slab track design that was
adopted on the Xinzhuang and Luzhou lines, in the hope of thoroughly working out the said issues.

Taking a broad view of the evolution of Taipei MRT trackwork construction techniques, similarities,
continuity, and the uniqueness of self-development exist in terms of the equipment, materials
and components which are applied in the construction of each successive Taipei MRT line, so as
to meet the requirements specified in the contract and facilitate improved implementation. After

accumulating numerous successful experiences in trackwork, DORTS now requires the collection
and transfer of technical achievements (so-called intellectual property) based on knowledge
management and sustainable development concepts. In the process of its trackwork development,
the practical experiences acquired during the construction and installation of rail components,

transportation equipment, and construction facilities have their own value and unique characteristics,
and will be further studied so as to implement DORTS' policies of "safety", "comfort" and
"convenience". The Taipei MRT system, a world-class construction, not only aims to provide high-
quality public transportation for passengers, but also a comfortable living environment along MRT

routes.

Keywords: track, rail, fastening system, support system, ballast track, non-ballast track, bottom up
method, top-down method, ERC method, floating slab track, noise, vibration, elastic

base plate