Stability assessment of submarine slope subjected to wave loading

T. Nian, B. Liu, Dong Wang, P. Yin

    Research output: Chapter in Book/Conference paperConference paper

    Abstract

    Stability assessment of submarine slopes subjected to wave-induced pressure is a necessary part of the design process for pipelines or structures in the marine environment, as the instability or liquefaction of the seabed induced by waves can cause significant displacement. To evaluate the stability of seafloor slopes, the upper bound approach of limit analysis combined with strength reduction technique is presented to solve the factors of safety (FS) of seafloor slope considering wave-induced pressure. First, the analytical formula for the stability of seafloor slope under static water condition is derived and the stability is analyzed. Then, waved-induced pressure is considered to act on the surface of slope as an external load to analyze the effects on the stability of seafloor slope. Compared with the results from elasto-plastic finite element method, the present solutions are validated. A series of calculations by changing parameters are carried out. The results show that the effects of wave have some disadvantages on the stability of seafloor slopes and this kind of affect will expand in shallow seas or in the situation of huge waves. © 2014 American Society of Civil Engineers.
    Original languageEnglish
    Title of host publicationGeotechnical Special Publication
    Place of PublicationChina
    PublisherAmerican Society of Civil Engineers
    Pages509-516
    Volume240
    ISBN (Print)9780784413425
    DOIs
    Publication statusPublished - 2014
    EventGeo-Shanghai 2014 - Shanghai, China
    Duration: 26 May 201428 May 2014

    Conference

    ConferenceGeo-Shanghai 2014
    CountryChina
    CityShanghai
    Period26/05/1428/05/14

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    Cite this

    Nian, T., Liu, B., Wang, D., & Yin, P. (2014). Stability assessment of submarine slope subjected to wave loading. In Geotechnical Special Publication (Vol. 240, pp. 509-516). China: American Society of Civil Engineers. https://doi.org/10.1061/9780784413425.052