Alignment Design for 1067mm Gauge Track

• Main Authors: Lun Jao, 饒惀
• Other Authors: Yusin Lee
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/45384287827404616178

碩士 === 國立成功大學 === 土木工程學系專班 === 94 === Track systems can be divided into high speed railway, traditional railway, metro, and light rail according to the train speed. Track gauge types include standard, wide, and narrow. In this research we focus on the alignment design for narrow 1067mm gauge traditional railway. Unlike highway design work where comprehensive documents like AASHTO Green Book and Highway Alignment code by the Ministry of Communications exist, there are relatively few systematic guidelines for track alignment design in Taiwan. This research is motivated by the need of such an extensive reference. Horizontal alignment design is the first step in the geometric design work for 1067mm gauge traditional track. Following this step, simple curve, transition curve, cant, slack, gradient, vertical intersecction point and vertical curve can be deployed according to train speeds. Station design depends on the operating need, and includes design of the terminal area, tracks, turnouts, platforms, and others. To assure train stability and avoid unfavorable combination of track elements, a straight line of minimum length between curves is necessary. The four major codes for 1067mm gauge track design are TRA Construction Operation Process, TRA Operating Manuals, MOC 1067 gauge track Bridge and Tunnel Check/Maintainance Standard, and Long Rail Installation and Maintainance Standard. Requirements are often deeply inter-related, and the design work is time and labor demanding. In light of a possible automated design system in the future, this thesis serves as a guideline which can be embedded into the computer code. This thesis reviews related codes and puts together requirements for track alignment design, covering regulations in horizontal, vertical, and station design. Use of computer softwares as tools and real world examples are also discussed. Also included is the topic of how to re-align tracks while maintaining train traffic.