Digitalization, Modularisation and Sensors Application of a Deep Excavation Project in Urban District of Hong Kong


Gavin SH Toh
Lambeth Associates Limited, Hong Kong
John Latter
Mandarin Oriental Hotel Group
Alan WL Wan
Gammon Construction Limited
Dennis TS Ho
Lambeth Associates Limited, Hong Kong
Elaine CL Chan
Lambeth Associates Limited, Hong Kong


The redevelopment of the Excelsior Hotel site included a 3-level basement that required excavation up to 17m. The design of the temporary works consisted of contiguous pipe piles braced by five layers of lateral support to provide stability to the pipe pile wall cofferdam, efficient groundwater cut-off and to control ground movement impact to the adjacent ground and buildings. The adjacent buildings comprised the World Trade Centre, five residential dwellings built in the 1960s, and an existing link bridge structure that required to be supported within the excavation area. This paper will discuss the collaborative and digital approaches in the design and planning of the method and sequence of the work, modularization of the shoring system, and the use of scanning and sensor monitoring devices – that will showcase and promote modern construction for Hong Kong deep excavation work. The collaborative and digital approach streamline the construction work process by first building in the virtual work before the real world. The buildability, safety, and quality of the actual implementation are greatly improved.

December 30, 2023
Online ISSN