A novel offshore platform blast wall design with energy absorption mechanism

Jinjing Liao

    Research output: ThesisMaster's Thesis

    Abstract

    Blast-walls are important structures in offshore platforms. It is difficult for traditional designs to meet code-compliances on wall deflection and weld tear-out. This study proposes a novel design using flexible supports filled with polymethacrylimide foam and rotational springs, allowing the wall to slide/rotate certain distances/angles to reduce the high stresses at supports and dissipate energy through foam deformations. Analytical model with numerical validation is developed to demonstrate the feasibility and effectiveness this design concept. Around 40% reduction in deflection and less than 5% plastic strains at welded supports are achieved. Guidance for optimal design are also provided through parametric study.
    LanguageEnglish
    QualificationMasters
    Awarding Institution
    • The University of Western Australia
    Award date29 Aug 2017
    DOIs
    StateUnpublished - 2017

    Fingerprint

    Energy absorption
    Foams
    Analytical models
    Plastic deformation
    Welds

    Cite this

    @phdthesis{24b4dfef97064c22872a1e9eda1e63eb,
    title = "A novel offshore platform blast wall design with energy absorption mechanism",
    abstract = "Blast-walls are important structures in offshore platforms. It is difficult for traditional designs to meet code-compliances on wall deflection and weld tear-out. This study proposes a novel design using flexible supports filled with polymethacrylimide foam and rotational springs, allowing the wall to slide/rotate certain distances/angles to reduce the high stresses at supports and dissipate energy through foam deformations. Analytical model with numerical validation is developed to demonstrate the feasibility and effectiveness this design concept. Around 40{\%} reduction in deflection and less than 5{\%} plastic strains at welded supports are achieved. Guidance for optimal design are also provided through parametric study.",
    keywords = "Blast wall, Flexible supports, Energy absorption, Analytical model, Finite element analysis, Dynamic response",
    author = "Jinjing Liao",
    year = "2017",
    doi = "10.4225/23/59ae4fa147c48",
    language = "English",
    school = "The University of Western Australia",

    }

    Liao, J 2017, 'A novel offshore platform blast wall design with energy absorption mechanism', Masters, The University of Western Australia. DOI: 10.4225/23/59ae4fa147c48

    A novel offshore platform blast wall design with energy absorption mechanism. / Liao, Jinjing.

    2017.

    Research output: ThesisMaster's Thesis

    TY - THES

    T1 - A novel offshore platform blast wall design with energy absorption mechanism

    AU - Liao,Jinjing

    PY - 2017

    Y1 - 2017

    N2 - Blast-walls are important structures in offshore platforms. It is difficult for traditional designs to meet code-compliances on wall deflection and weld tear-out. This study proposes a novel design using flexible supports filled with polymethacrylimide foam and rotational springs, allowing the wall to slide/rotate certain distances/angles to reduce the high stresses at supports and dissipate energy through foam deformations. Analytical model with numerical validation is developed to demonstrate the feasibility and effectiveness this design concept. Around 40% reduction in deflection and less than 5% plastic strains at welded supports are achieved. Guidance for optimal design are also provided through parametric study.

    AB - Blast-walls are important structures in offshore platforms. It is difficult for traditional designs to meet code-compliances on wall deflection and weld tear-out. This study proposes a novel design using flexible supports filled with polymethacrylimide foam and rotational springs, allowing the wall to slide/rotate certain distances/angles to reduce the high stresses at supports and dissipate energy through foam deformations. Analytical model with numerical validation is developed to demonstrate the feasibility and effectiveness this design concept. Around 40% reduction in deflection and less than 5% plastic strains at welded supports are achieved. Guidance for optimal design are also provided through parametric study.

    KW - Blast wall

    KW - Flexible supports

    KW - Energy absorption

    KW - Analytical model

    KW - Finite element analysis

    KW - Dynamic response

    U2 - 10.4225/23/59ae4fa147c48

    DO - 10.4225/23/59ae4fa147c48

    M3 - Master's Thesis

    ER -