MAA GROUP Consulting Engineering

TAIPEI, TAIWAN

TAIPEI MRT LINES - GEOTECHNICAL ENGINEERING SPECIALTY CONSULTANCY

MARKETS :
Mass Rapid Transit

SERVICES :
Geotechnical Engineering
Transportation & Civil Engineering

SCOPE OF WORK :
Geotechnical Engineering
Geotechnical Risk Management
Structural Design

A major role in the construction of the Taipei MRT network

MAA has played an important role in the creation and expansion of the Taipei MRT network with two main types of services.

Geotechnical engineering and geotechnical risk consultancy

First, starting in the 1980’s, through its geotechnical engineering specialty consultancy, by conducting feasibility studies for the creation of a MRT system in Taipei and being in charge of underground construction risk management for the whole project, including the installation of safety monitoring equipment and the creation of an Integrated Data Storage Center.

Planning, design and supervision services

Second by performing planning, design and construction supervision services in geotechnical and structural engineering for the Bannan Line (Blue Line), Songshan Line, Tucheng Line, Circular Line (Yellow Line), the Mucha extension of the Brown Line, the Xinzhuang Line (Orange Line) and the new Xinyi Line, from the 1980’s to present time. Work done involved cut-and-cover, bored shield and pipe-jacking tunnels, viaducts, underground and elevated stations and associated works. Construction of the Taipei MRT proved to be challenging due to the soft nature of the soils in the Taipei basin, sometimes close to liquefaction levels, and was another opportunity for MAA to provide its expertise in this field.

A case study: Songshan Line Design Lot DG166

The project includes four underground subway stations, a twin shield tunnel with a total length of 2.9 km, and a common duct system with a total length of 690 m. The shield tunnels are designed as underground lines with an opening diameter of 6.1 m.

Beimen Station is a four-story underground passenger station with approximate dimensions of 151 m long by 28 m wide. Yuanhuan Station is a four-story underground staked-platform station with approximate dimensions of 169 m long by 14m wide. Zhongshan Station is a three-story underground station intersected with the Dan-Shui line. Its approximate dimensions are 170 m long and 26 m wide. Finally, Sungchiang-Nanking Station is a two-story underground station intersected with the Xin-Zhuang line. Its approximate dimensions are 140 m long and 24 m wide. The design work includes civil, geotechnical, structural, architectural, E&M facilities, environmental control systems, and lift and escalator systems.