岩土力学2026，Vol.47Issue(1)：314-322,9.DOI:10.16285/j.rsm.2025.0198
深海管-土侧向相互作用大变形数值分析
Large-deformation numerical analysis of lateral pipe-soil interaction in deep-sea pipelines
摘要
Abstract
Deep-sea pipelines are typically laid on the seabed.Under the influence of their own weight and pipeline-laying operations,they become embedded into the seabed.The embedment depth wini significantly affects the lateral soil resistance exerted by the seabed on the pipeline.Existing research has primarily focused on pipelines with embedment ranging from 0.1 to 0.5 times the pipe diameter D.However,recent studies show that some pipelines embed deeper than 0.5D.We employed the radial point interpolation method-remeshing and interpolation technique with small strain(RPIM-RITSS)to perform large-deformation analyses of the lateral pipe-soil interaction for initial embedment from 0.1D to 1.0D.The method's effectiveness was validated by comparisons with centrifuge tests and other numerical results.Subsequent analyses examined how initial embedment and pipe weight influence the lateral-buckling mode and soil resistance.A residual-resistance model for lateral buckling,applicable to initial embedment from 0.6D to 1.0D,was proposed to support the safe design of deep-sea pipelines.关键词
深海管线/软黏土/侧向屈曲/大变形/管-土相互作用Key words
deep-sea pipelines/soft clay/lateral buckling/large deformation/pipe-soil interaction分类
建筑与水利引用本文复制引用
李春垒,胡春红,于龙..深海管-土侧向相互作用大变形数值分析[J].岩土力学,2026,47(1):314-322,9.基金项目
国家自然科学基金项目(No.52171252,No.52331010). This work was supported by the National Natural Science Foundation of China(52171252,52331010). （No.52171252,No.52331010）
