Refurbishment of the "Terreiro do Trigo" Dockyard for the New Lisbon Cruise Terminal

The Terreiro do Trigo dockyard at the Jardim do Tabaco was filled to allow the construction of the new Santa Apolönia cruise terminal in Lisbon at the Tagus River right bank. A load transfer platform (LTP), founded over jet grouting columns, allowed the construction of a 4.2 m height hydraulic embankment, placed over a soft muddy alluvium layer (Cu lesser than 20 kPa) with about 20 m of average thickness. The existent dockyard peripheral centenary walls were previously refurbished and underpinned using micropiles and capped by reinforced concrete beams,to accommodate the new embankment earth pressures. The main design and execution criteria, including the quality control and quality assurance of the jet grouting columns are presented, as well as the main results of the adopted monitoring and survey plan. Finally, the technical and economic advantages of the adopted solutions, comparing with some more conventional ones, are presented.