[CS2-01]UNDERPINNING AND TUNNELLING THROUGH TRAFFIC VIADUCT PILE FOUNDATION
*Chiew Lerk Qing1, Kojiro Hoshi1, Kouzo Kusano1(1. Nishimatsu Construction)
Keywords:
Underpinning work,Live traffic viaduct,Special cutting tools,Tunnel Boring Machine
Contract C882 covers the construction of the Keppel Station, cut & cover tunnels and its associated twin bored tunnels connecting to Harbourfront Station and Cantonment Station as a part of Circle Line 6 (CCL 6) Mass Rapid Transit (MRT) Project in Singapore. This paper summarises the construction methodology of underpinning work, tunnelling work and the structural movement during the key construction activities namely, load transfer, disconnection of existing piles from pile cap and TBM mining through the left-in piles for one of the piers, Pier FP9.
