抄録
In the mid to end 2000, Vietnam embarked in the construction of a series of deep water ports along the Cai Mep Thi Vai river, in the province of Vung Tau, close to Ho chi Minh city. Those ports were partly built on the tidal plain and partly reclaimed from the river. Two such ports Cai Mep International Terminal (CMIT) and GEMALINK, close to the mouth of the river, were showing a clay layer with very poor mechanical property of respectively 36 and 42 m. It was not possible to reclaim the 6 m of sand fill needed to put the container yard above the 100 years flood, without some sort of reinforcement/consolidation of the clay layers; Two problems were encountered, one of stability at the edge of the reclaimed land, the other one of the bearing capacity and long term settlement. The initial solution along the edge envisaged by the client was a block of soil mixing, but both the cost and the time needed were not satisfactory and Ménard was invited by the EPC-contractor to propose an alternative solution. Such alternative, implemented successfully, consisted in increasing the shear capacity by forced consolidation of the clay using the Ménard Vacuum Consolidation. The case histories of the two projects will be presented.
