Preloading of a hydraullic fill for foundation of LNG tanks

Preloading of a hydraullic fill for foundation of LNG tanks
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Román, F., Jimenez, R., García S, JC. and Coz, A. (2012). Preloading of a hydraullic fill for foundation of LNG tanks. ISSMGE – TC 211 International Symposium on Ground Improvement IS-GI. Brussels.SSMGE – TC 211 International Symposium on Ground Improvement IS-GI  Brussels 31 May & June 2012

A liquefied natural gas (LNG) plant is currently being constructed on a hydraulic fill in El Musel Port (Gijon, Northern Spain). The hydraulic fill is mainly composed of marine sands dredged from nearby locations, and it was placed on site using rainbow and pipeline discharge and the bottom dump method. Preloading was selected among several alternatives as the ground improvement method employed to reduce settlements of the LNG tanks. This paper presents the results of the geotechnical characterization campaign conducted at the site (SPT, CPTU, DPSH) and at the laboratory. In addition, the main features of the preloading employed are presented, as well as the results of the monitored settlements (both during preloading and during the construction of the tanks).