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Liquefaction potential of hydraulic fills
Alonso Pérez de Agreda, Eduardo; Gens Solé, Antonio; Tarrago, Dani; Madrid, Ricardo
Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
A container terminal is under construction at the Port of Barcelona. The quay, 1.6 km long, is made of concrete caissons founded on granular rubble mounds. The natural soil is a sequence of normally consolidated fine-grained deltaic deposits that reach a thickness of over 60 m. The quay was backfilled with hydraulic fill dredged from the seabed soils in front of the caissons quay, deposited by a rainbowing technique. A failure of a section of the quay was attributed to the static liquefaction of the hydraulic fill. This failure prompted a field campaign to identify fill properties and its liquefaction potential. Standard and seismic CPTU´s and Marchetti dilatometer tests were performed as well as a programme of laboratory tests. Available indices to estimate liquefaction potential were calculated and compared. One of the relevant issues raised after the quay failure was the ability of preloading to eliminate the liquefaction potential of the fill. In situ tests were performed on the fill before and after a large scale preload test. Liquefaction indices at those two stages are compared showing, in some cases, a reduction of liquefaction potential after preloading.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes
Hydraulic filling
Soil liquefaction
Barcelona (Spain) -- Harbor
Liquefaction
Soft soil
Hydraulic fill
In-situ tests
Sòls -- Liqüefacció
Port de Barcelona
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IOS Press
         

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