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    易平

    • 教授       硕士生导师
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:土木工程学院
    • 学科:结构工程. 防灾减灾工程及防护工程
    • 办公地点:大连理工大学综合实验三号楼524
    • 联系方式:yiping@dlut.edu.cn
    • 电子邮箱:yiping@dlut.edu.cn

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    Impact forces of submarine landslides on offshore pipelines

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    论文类型:期刊论文

    第一作者:Liu, Jun

    通讯作者:Yi, P (reprint author), Dalian Univ Technol, State Key Lab Coastal & Offshore Engn, Dalian, Peoples R China.

    合写作者:Tian, Jianlong,Yi, Ping

    发表时间:2015-02-01

    发表刊物:OCEAN ENGINEERING

    收录刊物:SCIE

    卷号:95

    页面范围:116-127

    ISSN号:0029-8018

    关键字:Submarine landslide; Debris flow; Impact; Drag force; Computational fluid dynamics (CFD); Offshore pipelines

    摘要:Impact forces induced by submarine landslides on pipelines are estimated using a computational fluid dynamics (CFD) approach. It is found that the predicted forces using the CFD approach are consistent with those predicted using the conventional geotechnical approach. It is also found that the impact angle of the debris flow induced by landslides affects the normal drag factor but hardly has any effect on the longitudinal drag factor. Empirical formulae for estimating normal and axial impact forces on a free spanned pipeline induced by an oblique debris flow are developed based on numerical test results. A new failure envelope that can be used in conventional geotechnical approaches is also obtained based on the numerical test results. (C) 2014 Elsevier Ltd. All rights reserved.