哈尔滨工程大学学报2025，Vol.46Issue(7)：1317-1324,8.DOI:10.11990/jheu.202307022
波流共同作用下砂质海床液化分析
Liquefaction analysis of saturated sandy seabed under wave-current combined action
摘要
Abstract
To address the unclear impact of currents on seabed displacement characteristics before and after lique-faction,this study developed a porous elastoplastic seabed finite element model for saturated sandy seabed under combined wave-current action.Biot's governing equations were used to describe the seabed's dynamic response,and a state-dependent bounding surface model was employed to simulate seabed liquefaction behavior.The results showed that,first,the currents have a significant effect on both the residual excess pore water pressure and the os-cillatory excess pore water pressure within the seabed.Second,the densification effect induced by wave-current ac-tion on the sandy seabed is particularly significant upon seabed liquefaction.Third,after liquefaction,the following current significantly increases the seabed displacement,especially the horizontal displacement.Meanwhile,the op-posing current substantially reduces the horizontal displacement.The vertical displacement of the seabed under the combined action of waves and currents evolves through three distinct stages:the elastic response stage,the gradual compaction stage,and the severe liquefaction stage.关键词
波流共同作用/海床液化/饱和多孔弹塑性海床/u-p形式Biot理论/海床位移轨迹/海床孔压累积/有限元分析/边界面模型Key words
wave-current action/seabed liquefaction/saturated porous elastoplastic seabed/u-p formulation of Biot's theory/seabed displacement trajectory/residual pore water pressure/finite element analysis/bounding sur-face model分类
海洋科学引用本文复制引用
薛莹莹,张杰,陈炜昀,张璟哲,蔡飞..波流共同作用下砂质海床液化分析[J].哈尔滨工程大学学报,2025,46(7):1317-1324,8.基金项目
国家自然科学基金项目(41877243) （41877243）
国家重点研发计划(2022YFC3080400) （2022YFC3080400）
江苏省重大基础设施安全保障协同创新中心专项资金项目(B210620221) （B210620221）
教育部春晖计划国际合作项目(HZKY20220137). （HZKY20220137）
