The Hong-Kong – Zhuhai – Macao connection will boost trade between the Macao and Hong-Kong special administrative regions and Guangdong province in the Pearl River delta zone.
This six-lane dual-carriageway road link, with a total length of 42 km, comprising viaduct sections as well as a tunnel section between two artificial islands, will link the former Portuguese and British trading posts in 45 minutes, compared with four hours at present by sea.
As part of its construction contract for the 9.4 km of viaduct in the territorial waters of the Hong-Kong SAR, the BOUYGUES/CHINA HARBOUR consortium contracted TERRASOL for assistance with the design of the foundations of three of the component viaducts located in the airport ship channel.
In a potentially-faulted near-shore geotechnical context, composed of sub-consolidated marine deposits overlaying weakly-compacted fine alluvia, coarse alluvia, and a granitic substratum showing a fringe of very advanced alteration, the TERRASOL mission consisted in defining the geotechnical models of the viaducts, and the static and dynamic soil/structure interaction parameters of the support foundations, as the structure is being built in a seismic environment.
This mission was conducted in conformity with the geotechnical codes in effect in Hong-Kong.
- Definition of the geotechnical models of the viaducts
- Definition of the static and dynamic soil/structure interaction parameters of the support foundations