Finite Element Modeling of the Tensile Capacity of Suction Caissons in Cohesionless Soil

Søren Dam Nielsen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

When suction caissons are used as foundations for jacket structures, the caissons are exposed to significantvertical loads. If the self-weight of the structure is relatively low, a large horizontal load may lead to tension onthe foundation on the incoming side. For steady loads, such as the wind load during production, the soil responsewill be drained. This paper presents the results from a series of finite element analysis (FEA) on suction caissonsin cohesionless soil. The analyses are performed on suction caissons with different dimensions and different soilconditions. For normalization, dimensional analyses of the calculated results are performed to create dimensionlessgroups. The dimensionless groups are used to establish a relation between the normalized tensilecapacity and the interface strength. This relation is used to establish two formulations of the drained tensilecapacity for suction caissons in cohesionless soils. One for associated plasticity and one for non-associatedplasticity with the dilatation angle equal zero.
OriginalsprogEngelsk
Artikelnummer101866
TidsskriftApplied Ocean Research
Vol/bind90
Udgave nummerSeptember 2019
ISSN0141-1187
DOI
StatusUdgivet - sep. 2019

Fingerprint

Caissons
Soils
Plasticity
Finite element method

Emneord

  • Bucket foundations
  • Suction caissons
  • Drained tensile capacity
  • Finite element limit analysis
  • Finite element analysis
  • Offshore foundations
  • Offshore wind energy

Citer dette

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title = "Finite Element Modeling of the Tensile Capacity of Suction Caissons in Cohesionless Soil",
abstract = "When suction caissons are used as foundations for jacket structures, the caissons are exposed to significantvertical loads. If the self-weight of the structure is relatively low, a large horizontal load may lead to tension onthe foundation on the incoming side. For steady loads, such as the wind load during production, the soil responsewill be drained. This paper presents the results from a series of finite element analysis (FEA) on suction caissonsin cohesionless soil. The analyses are performed on suction caissons with different dimensions and different soilconditions. For normalization, dimensional analyses of the calculated results are performed to create dimensionlessgroups. The dimensionless groups are used to establish a relation between the normalized tensilecapacity and the interface strength. This relation is used to establish two formulations of the drained tensilecapacity for suction caissons in cohesionless soils. One for associated plasticity and one for non-associatedplasticity with the dilatation angle equal zero.",
keywords = "Bucket foundations, Suction caissons, Drained tensile capacity, Finite element limit analysis, Finite element analysis, Offshore foundations, Offshore wind energy, Bucket foundations, Suction caissons, Drained tensile capacity, Finite element limit analysis, Finite element analysis, Offshore foundations, Offshore wind energy",
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Finite Element Modeling of the Tensile Capacity of Suction Caissons in Cohesionless Soil. / Nielsen, Søren Dam.

I: Applied Ocean Research, Bind 90, Nr. September 2019, 101866, 09.2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Finite Element Modeling of the Tensile Capacity of Suction Caissons in Cohesionless Soil

AU - Nielsen, Søren Dam

PY - 2019/9

Y1 - 2019/9

N2 - When suction caissons are used as foundations for jacket structures, the caissons are exposed to significantvertical loads. If the self-weight of the structure is relatively low, a large horizontal load may lead to tension onthe foundation on the incoming side. For steady loads, such as the wind load during production, the soil responsewill be drained. This paper presents the results from a series of finite element analysis (FEA) on suction caissonsin cohesionless soil. The analyses are performed on suction caissons with different dimensions and different soilconditions. For normalization, dimensional analyses of the calculated results are performed to create dimensionlessgroups. The dimensionless groups are used to establish a relation between the normalized tensilecapacity and the interface strength. This relation is used to establish two formulations of the drained tensilecapacity for suction caissons in cohesionless soils. One for associated plasticity and one for non-associatedplasticity with the dilatation angle equal zero.

AB - When suction caissons are used as foundations for jacket structures, the caissons are exposed to significantvertical loads. If the self-weight of the structure is relatively low, a large horizontal load may lead to tension onthe foundation on the incoming side. For steady loads, such as the wind load during production, the soil responsewill be drained. This paper presents the results from a series of finite element analysis (FEA) on suction caissonsin cohesionless soil. The analyses are performed on suction caissons with different dimensions and different soilconditions. For normalization, dimensional analyses of the calculated results are performed to create dimensionlessgroups. The dimensionless groups are used to establish a relation between the normalized tensilecapacity and the interface strength. This relation is used to establish two formulations of the drained tensilecapacity for suction caissons in cohesionless soils. One for associated plasticity and one for non-associatedplasticity with the dilatation angle equal zero.

KW - Bucket foundations

KW - Suction caissons

KW - Drained tensile capacity

KW - Finite element limit analysis

KW - Finite element analysis

KW - Offshore foundations

KW - Offshore wind energy

KW - Bucket foundations

KW - Suction caissons

KW - Drained tensile capacity

KW - Finite element limit analysis

KW - Finite element analysis

KW - Offshore foundations

KW - Offshore wind energy

U2 - 10.1016/j.apor.2019.101866

DO - 10.1016/j.apor.2019.101866

M3 - Journal article

VL - 90

JO - Applied Ocean Research

JF - Applied Ocean Research

SN - 0141-1187

IS - September 2019

M1 - 101866

ER -