Page 126 - 捷運技術 第58期

Journal of Rapid Transit System and Technology No.58
pp. 115-136, 2023 DOI 10.29670/JRTST.202310_(58).0005

Received May 21, 2022, accepted July 25, 2022, date of publication October 31, 2023

Taichung Mass Rapid Transit System

Wuri–Wenxin–Beitun Line CJ930 Project –
Bridge Planning, Design and Construction

JUNHONG CHEN , SHENGHSIANG WANG , CIHONG YANG 3
1
2
1 Second District Project Office, Department of Rapid Transit Systems, Taipei City Government
2 Second District Project Office, Department of Rapid Transit Systems, Taipei City Government
3 Second District Project Office, Department of Rapid Transit Systems, Taipei City Government
Corresponding Author : SHENG-HSIANG WANG, E-mail: 18349@gov.taipei

ABSTRACT

The total length of Taichung MRT Wuri-Wenxin-Beitun Line CJ930 Construction
Project is about 8.69km, and the elevate section is about 7.28km. The bridge
construction methods adopted by CJ930 team includes “full-span pre-casting &
launching method”, “advancing shoring method”, “the steel beam hoisting method”
and “balanced cantilever method”. The safety and quality of viaduct construction
is all linked with one another from the pre-construction process to the entire
construction work, which clearly shows the importance of viaduct planning, design
and construction.
This paper briefly describes the viaduct planning and design concept, including the
bridge modeling, bridge type and construction method, as well as introduce the
design and construction of pre - cast U-shaped beams, bracket-type bridge piers,
long-span field-casting & balanced cantilever bridges and steel truss bridge across
Fazi River. Furthermore, it provides a comparison of planning principle for various
types of bridge foundations, then goes on to discuss the viaduct seismic design, and
bridge fall prevention device. Finally, it introduces the viaduct drainage system
layout plan and sound proof wall project, which can be used as a reference for the
similar MRT projects.

Keywords: Full-span Pre-casting & Launching Method, The Steel Beam Hoisting
Method, Advancing Shoring Method, Balanced Cantilever Method