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Title:
Ultimate bearing capacity of a pipeline on clayey soils: Slip-line field solution and FEM simulation
Author: Gao FP(高福平); Wang N(汪宁); Zhao B(赵波)
Source: OCEAN ENGINEERING
Issued Date: 2013-11-15
Volume: 73, Pages:159-167
Abstract: The ultimate bearing capacity of a cylindrical foundation (e.g. a submarine pipeline, circular mooring lines) on clayey soils is analyzed analytically and numerically by employing the slip-line field theory and the plane-strain finite element method respectively. A slip-line field solution is presented, taking into account of circular configuration of the pipe, the pipe embedment, and the pipe–soil interfacial cohesion. The derived bearing capacity factors for a smooth rigid pipe may limit to those for the conventional rectangle-shaped strip footing while the pipe embedment is approaching zero. A plane-strain finite element model is further proposed to simulate the quasi-static process of the pipeline penetrating into the clay soil, in which the contact-pair algorithm and adaptive meshing technique are employed, and the Drucker–Prager constitutive model is used for modeling the soil plasticity. Comparison indicates that the present numerical results match well with the derived slip-line solutions. According to the obtained vertical load–displacement curves, concurrently referring to the plastic strain field and the soil incremental-displacement vector field, the shear failure types and the corresponding collapse loads can be thereby determined for the pipeline foundations on clayey soils.
Keyword: Collapse loads ; Slip-line field theory ; Plane-strain FEM ; Collapse loads ; Steel catenary riser ; Submarine pipeline
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China
Correspondent Email: fpgao@imech.ac.cn
Related URLs: 查看原文
WOS ID: WOS:000326997700016
ISSN: 0029-8018
Rank: [Gao, Fuping; Wang, Ning; Zhao, Bo] Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing100190, China; [Zhao, Bo] CNPC Offshore Engineering Company Limited, Beijing 100028, China
Subject: 固体力学::岩体力学和土力学;
Department: LMFS流固土耦合力学(LHO)
Classification: 一类
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/47507
Appears in Collections:流固耦合系统力学重点实验室(2012-)_期刊论文

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Recommended Citation:
Gao FP,Wang N,Zhao B. Ultimate bearing capacity of a pipeline on clayey soils: Slip-line field solution and FEM simulation[J]. OCEAN ENGINEERING,2013-11-15,73:159-167.
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