Page 66 - 捷運技術 第60期

wall to the perimeter steel columns. Moreover, due to lack of relevant construction
experience about C-PSW/CF, Mock-Up testing was conducted to ensure quality
assurance and control of steel and concrete works. In terms of analytical part,
through carrying out elasto-plastic analyses of 11 sets of ground motion located
adjacent to the construction site, it was secured that both C1 and D1 towers exhibit
excellent structural performance under various earthquake levels, with the ductility
mechanisms of their components satisfying the performance expectations. In order
to further minimize the impact on the airport MRT station and improve the retrofit
constructability, the preferred strategy adopts altering the force transfer path and
identifying suitable retrofit locations.
The slurry wall, piles, and foundation are integrated into a type similar to that of a
caisson foundation. A three-dimensional equivalent spring is utilized to simulate
the soil-structure interaction, and the deformation and stress are assessed under
various load combinations to ensure the safety of the existing foundation and piles.
The Taipei Corridor, defined as the historical axis of Taipei Castle, located on
complex underground structure surrounding the site. As a result, certain steel
columns are situated above the underground railway tunnel. To overcome this
challenge, a long-span transfer steel girder is utilized to span the tunnel. The north
side of the girder is connected to the existing exterior wall of the basement, while
the south side rests on a new foundation, which does not come into direct contact
with the tunnel. This configuration transfers the load of the steel column to both
ends, ensuring the safety of the tunnel.
The C1/D1 Joint Development Building represented a highly complex and
challenging project that required constant communication and collaboration among
team members in order to develop reliable structural design strategies. Through
innovative and rigorous structural design, the new and existing structures are
integrated to ensure the safety of the entire building.

Keywords: high-rise building, joint development, C-PSW/CF, elasto-plastic analysis,
Taipei Corridor.