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

• Published in: Ocean Engineering
• Main Authors: Zhang, J.H., Zhang, L.M., Lu, X.B.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2007
• Subjects: Suction bucket foundation; Laterally loaded pile; Dynamic loading; Centrifuge modeling; Liquefaction; Pore water pressure; Ice Sheet
• Online Access: http://repository.ust.hk/ir/Record/1783.1-18684; https://doi.org/10.1016/j.oceaneng.2006.08.009; http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=0029-8018&rft.volume=34&rft.issue=8-9&rft.date=2007&rft.spage=1069&rft.epage=1079&rft.aulast=Zhang&rft.aufirst=J.+H.&rft.atitle=Centrifuge+modeling+of+suction+bucket+foundations+for+platforms+under+ice-sheet-induced+cyclic+lateral+loadings; http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=LinksAMR&SrcApp=PARTNER_APP&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000247148700001; http://www.scopus.com/record/display.url?eid=2-s2.0-34147095406&origin=inward

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.