Centrifuge modeling of suction bucket foundations for platforms under ice-sheet-induced cyclic lateral loadings

• Published in: Ocean Engineering
• Main Authors: 张建红, Zhang LM, 鲁晓兵, Zhang, JH (reprint author), Tsing Hua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2007
• Subjects: Suction Bucket Foundation; Laterally Loaded Pile; Dynamic Loading; Centrifuge Modeling; Liquefaction; Pore Water Pressure; Pile Groups; Embankments; Sands; Engineering; Oceanography; Marine; Civil; Ocean; gases > liquefaction; pore pressure; levees; 液化; liquefaction of gases; liquefying; neutral stress; pore-water pressure; dikes (embankments); berms; dikes (manmade); revetments; beach berms; Ice Sheet
• Online Access: http://dspace.imech.ac.cn/handle/311007/33977; https://doi.org/10.1016/j.oceaneng.2006.08.009

This paper presents the results of a series of centrifuge model tests performed to study the behavior of suction bucket foundations for a tension leg platform in the Bohai Bay, China. The target lateral loadings were from ice-sheet-induced structural vibrations at a frequency of 0.8-1.0 Hz. The results indicate that excess pore water pressures reach the highest values within a depth of 1.0-1.5 in below the mud line. The pore pressures and the induced settlement and lateral displacement increase with the amplitude of the cyclic loading. Two failure modes were observed: liquefaction in early excitations and settlement-induced problems after long-term excitations. (c) 2006 Elsevier Ltd. All rights reserved.