Description
Frontiers in Offshore Geotechnics III
Coordinator: Meyer Vaughan
Language: EnglishSubject for Frontiers in Offshore Geotechnics III:
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Description
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Frontiers in Offshore Geotechnics III comprises the contributions presented at the Third International Symposium on Frontiers in Offshore Geotechnics (ISFOG, Oslo, Norway, 10-12 June 2015), organised by the Norwegian Geotechnical Institute (NGI). The papers address current and emerging geotechnical engineering challenges facing those working in offshore construction, design and research. Keynote papers with authors from industry and academia describe the state-ofthe-art in practice and theory, and a further 191 peer-reviewed papers describe emerging research, new design techniques and recent case studies related to the frontiers of offshore geotechnical engineering.
The themes of the papers include:
? Geohazards;
? Soil characterisation, modelling and testing techniques;
? Shallow, caisson and pile foundation technology;
? Anchoring solutions;
? Well, conductor and pipeline geotechnics;
? Jack-up unit spudcan behaviour, and;
? Reliability-based and performance-based geotechnical design.
New and existing design methods and industry best practices are presented together with innovative technologies and emerging research ideas derived from a variety of numerical and theoretical investigations, experimental programmes and field experience. Frontiers in Offshore Geotechnics III provides a comprehensive state-of-the-art reference for professionals and researchers in offshore, civil and maritime engineering and for soil mechanics specialists.
Preface
Committees
Reviewers
Sponsors
Volume 1
The Third ISSMGE McClelland Lecture
Introduction to Knut H. Andersen, The Third ISSMGE McClelland Lecturer
Cyclic soil parameters for offshore foundation design
K.H. Andersen
Keynotes
The suction foundation technology
T.I. Tjelta
Geotechnics for wells top-hole section and conductor
P. Jeanjean, A. Zakeri, Z. Al-Khafaji, K. Hampson, E. Clukey & E. Liedtke
The effects of pile ageing on the shaft capacity of offshore piles in sand
K. Gavin, R. Jardine, K. Karlsrud & B. Lehane
A FE procedure for calculation of cyclic behaviour of offshore foundations under partly drained conditions
H.P. Jostad, G. Grimstad, K.H. Andersen & N. Sivasithamparam
Geohazard risk evaluation and related data acquisition and sampling program for the methane hydrate offshore production test
K. Yamamoto, Y. Nakatsuka, R. Sato, T.J. Kvalstad, K. Qiu & R. Birchwood
Deterministic and probabilistic advances in the analysis of spudcan behaviour
M. Cassidy, J. Li, P. Hu, M. Uzielli & S. Lacasse
Suction anchors and caissons
Installation of suction caissons for an asymmetrical support structure in sandy soil
E.A. Alderlieste & E.A. van Blaaderen
Simplified earthquake analysis for wind turbines and subsea structures on closed caisson foundations
C. Athanasiu, A. Bye, J. Tistel, A.G. Ribe, K. Arnesen, S. Feizikhanhandi & E. Sørlie
Laterally loaded suction caissons with aspect ratio of one
C.-H. Chen, R.B. Gilbert, H. Gerkus, A.A. Saleh & L. Finn
Seismic response of bucket foundations for offshore wind tower using dynamic centrifuge tests
Y.W. Choo, S.G. Yang, K. Lee, Y. Kim, K. Bae, B.M. Jin & N.R. Kim
Friction degradation and strength regain along suction piles in soft deepwater Gulf of Guinea clays
J.L. Colliat
Suction pile foundation for a PLET subsea structure
A. Foresi & S. Bughi
Suction caisson extraction resistance in Gulf of Guinea clay
C. Gaudin, M.F. Randolph, S. Gourvenec, C.D. O’Loughlin, D.J. White & J.-L. Colliat
Performance of a shallow skirted foundation for TLP mooring in carbonate silt
S.M. Gourvenec, S. Neubecker, M. Senders, D.J. White, C. Gaudin & C.D. O’Loughlin
Calculation of undrained holding capacity of suction anchors in clays
H.P. Jostad & K.H. Andersen
Interpretation of centrifuge tests of suction anchors in reconstituted soft clay
H.P. Jostad, K.H. Andersen, H.D.V. Khoa & J.L. Colliat
CAISSON_VHM: a program for caisson capacity under VHM load in undrained soils
S. Kay
Suction anchor geotechnical design practice: A case study
J. Kennedy, J. Oliphant, A. Maconochie, B. Stuyts & D. Cathie
Centrifuge model test for bearing capacity evaluation of hybrid suction foundation on clay under vertical and horizontal loads
J.H. Kim, S.R. Kim, D.S. Kim, K.Y. Lee, J.U. Youn, D.J. Kim & S.H. Jee
Pullout resistance of horizontal and inclined loaded suction anchor installed in silty sand via centrifuge modelling
S. Kim, J.-H. Kim, D.-S. Kim & Y.W. Choo
Skirt penetration resistance in carbonate soils from the CPT
B.M. Lehane, S. Elkhatib & P. Brunning
Horizontal capacity of multiple suction anchors using numerical analysis
S.H. Na, I.S. Jang, M.H. Oh & O.S. Kwon
Dynamic behaviour of mono bucket foundations subjected to combined transient loading
S.D. Nielsen, L.B. Ibsen & B.N. Nielsen
Novel monitoring solutions solving geotechnical problems and offshore installation challenges
P. Sparrevik & J.M. Strout
Effect of torsion on suction piles for subsea and mooring applications
H. Suroor & J. Hossain
Comparison of design methods for axially loaded buckets in sand
E. Vaitkunaite, B.N. Nielsen & L.B. Ibsen
Caisson capacity in undrained soil: Failure envelopes with internal scooping
B.F.J. van Dijk
P–y curves for bucket foundations in sand using finite element modeling
M.U. Østergaard, B.S. Knudsen & L.B. Ibsen
Pipelines, risers and subsea earthworks
Seabed stiffness model for steel catenary risers
C.P. Aubeny, T.A. White, T. Langford, V. Meyer & E.C. Clukey
Ultimate uplift capacity of buried pipelines in undrained clay
J.-C. Ballard & C.C. Smith
Evaluation of a toroid for model pipeline testing of very soft offshore box core samples
A.G. Boscardin & D.J. DeGroot
Excess pore pressure redistribution beneath pipelines: FEA investigation and effects on axial pipe-soil interaction
D. Carneiro, D.J. White, F.A.B. Danziger & G.B. Ellwanger
Pipeline embedment and consolidation beneath on-bottom pipe model in kaolin clay
R. Carroll
The soil strength degradation influence in the axial pipe-soil resistance
C.O. Cardoso, C.S. Amaral & V.T. Ochi
Pipe-Soil Interaction: Recent and future improvements in practice
A.J. Hill & D.J. White
Predicted and observed settlements of a subsea rock installation – comparison between field measurements and FE simulations of soft North Sea clay
M. Kahlström, R. Frossard & H. Mattsson
Effects of different loading time histories on fatigue design of steel catenary risers using nonlinear riser-soil interaction models
M. Kimiaei & J. Liao
A new torsional shear device for pipeline interface shear testing
M.Y.-H. Kuo, C.M. Vincent, M.D. Bolton, A. Hill & M. Rattley
Large scale experiments on the riser-soil interaction in clay
K. Li, L.Wang & F. Yuan
An integrated approach to pipeline burial in the 21st century – The current state-of-the-art
A. Maconochie, J. Kennedy & J. Oliphant
Direct shear interface tests for pipe-soil interaction assessment
V.M. Meyer, R. Dyvik & D.J. White
Evaluation of pipe-soil interaction in liquefied soil
A. Murianni, O. Zanoli & E.J. Parker
Pipe-soil interaction under rapid axial loading
V. Smith & A.M. Kaynia
Mechanical trencher modelling in hard ground: State-of-the-art
B. Stuyts, D. Cathie, C. Guyatt, P. Boyde & J. Pyrah
Finite element analysis of soil damping for pipeline slugging
J.S. Templeton III, M.J. Barrett & E.C. Clukey
Geotechnical considerations for pipeline stabilization design using rock berms
J.G. Tom, H. Zhou &A.D. Deeks
Pipe-soil interaction mechanism during pipeline upheaval buckling in loose saturated sand
J.Wang, S.K. Haigh & N.I. Thusyanthan
Study of vertical pipe-soil interaction based on Coupled Eulerian-Lagrangian method
K.Wang, R. Shi & L.Wang
Stress level effects on plane-strain pipe uplift resistance
E.S.Williams, B.W. Byrne & A. Blakeborough
Theoretical analysis and model test for pipeline protection from dragged anchors
S. Yan, B. Guo, L. Sun & Z. Lei
A discrete element study on upheaval ratcheting behavior of pipelines buried in sand
L. Yu, H. Zhang & J. Liu
An investigation on existing nonlinear seabed models for riser-fluid-soil interaction studies in steel catenary risers
E. Zargar & M. Kimiaei
Geotechnical design and construction aspects of a pipeline-escarpment crossing
J. Zhang, C. Erbrich, I. Finnie, S. Neubecker, D.J. White, A.D. Deeks, G. Doh, G. Gumming, W. Op den Velde, N. Brown & R. Little
Piled foundations
Modelling of laterally loaded screw piles with large helical plates in sand
T.A. Al-Baghdadi, M.J. Brown, J.A. Knappett & R. Ishikura
Design methodology for cyclically and axially loaded piles in chalk forWikinger OWF
A.H. Augustesen, C.T. Leth, M.U. Østergaard, M. Møller, J. Dührkop & P. Barbosa
Full scale offshore verification of axial pile design in chalk
P. Barbosa, M. Geduhn, R. Jardine, F. Schroeder & M. Horn
Centrifuge investigation of the axial cyclic behaviour of a single pile used for the foundation of a jacket type offshore wind turbine
M. Blanc, L. Thorel, R. Isorna, C. Dano, P. Kotrnois & M. Philippe
Review of pile driving results for the M¯aui and Maari developments in the Taranaki basin of New Zealand
P. Brunning, F.C. Chow, A. Keep, J. Thomas, D. Yong & D. Pennington
Cyclic pile load tests combined with laboratory results to design offshore wind turbine foundations in chalk
J. Dührkop, A.H. Augustesen & P. Barbosa
Comparison of pile bearing capacity from CPT and dynamic load tests in clay considering soil setup
K. Fakharian & M.R. Khanmohammadi
The use of pipe piles for creating ice protection barrier
V.B. Glagovsky, S.A. Sosnina & I.N. Shatalina
Improvement of bearing capacity of vibratory driven open-ended tubular piles
J. Grabe & T. Pucker
Small strain overlay to the API p-y curves for sand
S.B. Hanssen
Boulder-soil-pile dynamic interaction
A. Holeyman, P. Peralta & N. Charue
Driven pile design in weak rock
J. Irvine, V. Terente, L.T. Lee & R. Comrie
Effect of soil set-up during interruption of offshore pile driving
A. Jahr &T. Tefera
Axial capacity design practice for North European wind-turbine projects
R.J. Jardine, N.V. Thomsen, M. Mygind, M.A. Liingaard & C.L. Thilsted
Lessons learned from pile driving and monitoring in gravels on the Northstar Artificial Island
P. Jeanjean, D. Miller, H. Brooks & M. Yogendrakumar
Innovative design of foundations – offshore wind farm substation
L. Kellezi, S. Sundararajan & O. Koreta
A preliminary experimental study on the mechanism of local scour at pile groups in steady currents
F. Liang, C.Wang, Y.Wang & M. Huang
Interpretation difficulties of pile set-up in sand
J.K. Lim & B.M. Lehane
Evolution of driving resistance during driven pile installation
R. Liu, S.W. Yan & P. Basu
CPT-based pile shaft friction in calcareous sands of western Indian offshore
R. Mahanta, R.K. Ghanekar & A. Kumar
Synthesis of pile driving data in South East Asia
E. Nicolini, I. Haghighi & J.L. Colliat-Dangus
Case studies – predicting soil resistance to driving in South East Asia
C.R. Parthasarathy, G. Ramesh & K. Nikita
Axial capacity ageing trends of piles driven in silica sands
S.P. Rimoy & R.J. Jardine
In situ and laboratory tests in dense sand investigating the helix-to-shaft ratio of helical piles as a novel offshore foundation system
G. Spagnoli, K. Gavin, C. Brangan & S. Bauer
Re-assessment of pile driveability predictions on sites offshore Nigeria
B. Vignerot, R.Wallerand, M. Maron & D. Colliard
Numerical implementation of soil-pile interaction models for monotonic and reversed axial loading
A.F.Witthoeft, X. Long & K.-M. Tjok
Ultimate lateral resistance of laterally loaded piles in undrained clay
J. Yu, M. Huang & C. Zhang
Deepwater jetted piles: Numerical modeling of jetting action and axial bearing capacity
A. Zakeri,W.O. McCarron, E.C. Clukey, E. Liedtke & P. Jeanjean
Centrifuge model tests on laterally monotonic and cyclic pile-soil interaction of a tetrapod jacket foundation
B. Zhu, T. Li & J. Ren
Monopiles
Model pile response to multi-amplitude cyclic lateral loading in cohesionless soils
C.N. Abadie, B.W. Byrne & S. Levy-Paing
On the development of a hybrid foundation for offshore wind turbines
I. Anastasopoulos & M. Theofilou
Alternative p-y curve formulations for offshore wind turbines in clays
M. Arroyo, D. Abadías & M. Coelho
Improving the lateral resistance of offshore pile foundations for deepwater application
H.S. Arshi & K.J.L. Stone
New design methods for large diameter piles under lateral loading for offshore wind applications
B.W. Byrne, R. McAdam, H.J. Burd, G.T. Houlsby, C.M. Martin, L. Zdravkovic, D.M.G. Taborda, D.M. Potts, R.J. Jardine, M. Sideri, F.C. Schroeder, K. Gavin, P. Doherty, D. Igoe, A. MuirWood, D. Kallehave & J.S. Gretlund
Cyclic lateral loading of monopiles for offshore wind turbines
A.E. Haiderali, M. Nakashima & S.P.G. Madabhushi
Observed variations of monopile foundation stiffness
D. Kallehave, C.L. Thilsted & A. Troya
Design of large diameter monopiles in chalk atWestermost Rough offshore wind farm
A. MuirWood, B. Mackenzie, D. Burbury, M. Rattley, C.R.I. Clayton, M. Mygind, K.W. Andersen, C.L. Thilsted & M.A. Liingaard
Influence of vertical loads on the behavior of laterally loaded large diameter pile in sand
L.L. Mu, M.S. Huang, J. Zhang & C.M. Feng
Predicting monopile behaviour for the GodeWind offshore wind farm
F.C. Schroeder, A.S. Merritt, K.W. Sørensen, A. MuirWood, C.L. Thilsted & D.M. Potts
Evaluation of a new p-y approach for piles in sand with arbitrary dimensions
K. Thieken, M. Achmus & K. Lemke
Experimental trends from lateral cyclic tests of piles in sand
P. Truong & B.M. Lehane
Effect of relative pile’s stiffness on lateral pile response under loading of large eccentricity
V. Zania, O. Hededal & R.T. Klinkvort
Numerical modelling of large diameter piles under lateral loading for offshore wind applications
L. Zdravkovi´c, D.M.G. Taborda, D.M. Potts, R.J. Jardine, M. Sideri, F.C. Schroeder, B.W. Byrne, R. McAdam, H.J. Burd, G.T. Houlsby, C.M. Martin, K. Gavin, P. Doherty, D. Igoe, A. MuirWood, D. Kallehave & J.S. Gretlund
Author index
Volume 2
Shallow foundations
Prediction and worked example for a sliding foundation on soft clay
S. Bretelle
Effects of drainage on the response of a sliding subsea foundation
M.L. Cocjin, S.M. Gourvenec, D.J. White & M.F. Randolph
Undrained bearing capacity of skirted mudmats on inclined seabeds
H.P. Dunne, C.M. Martin, L. Muir, N. Brown & R.Wallerand
Three-dimensional limit analysis of rectangular mudmat foundations
C.M. Martin, H.P. Dunne, R.Wallerand & N. Brown
Collision of double hull tanker with gravity base foundation of offshore wind turbine: case of horizontal drift and swell D. Osthoff & J. Grabe
Some key aspects in geotechnical design of GBS foundations on sand
H.J. Pederstad, D.A. Kort & F. Nowacki
A framework for the design of sliding mudmat foundations
B. Stuyts, R.Wallerand & N. Brown
Undrained vertical bearing capacity of perforated shallow foundations
L. Tapper, C.M. Martin, B.W. Byrne & B.M. Lehane
Simulation of a full-scale test on a gravity base foundation for offshore wind turbines using a high cycle accumulation model
H. Zachert, T.Wichtmann, Th. Triantafyllidis & U. Hartwig
System integration of direct on-seabed sliding foundations
H. Zhou, H. Krisdani, R. Maujean & A.D. Deeks
Anchoring systems
Pullout capacity of plate anchors in sand for floating offshore wind turbines
A.S. Bradshaw, J. Giampa, F. Dietrich, R. Gilbert & H. Gerkus
Centrifuge model study on pullout behavior of plate anchors in clay with linearly increasing strength
J. Chen, C.F. Leung, Z. Chen, K.K. Tho & Y.K. Chow
Large deformation numerical analysis of plate anchor keying process
Z. Chen, K.K. Tho, C.F. Leung & Y.K. Chow
The role of partly remoulded clay in fluke and plate anchor design
R. Dahlberg & S. Rességuier
Numerical modeling of drag anchors of floating structures – comparison of ultimate holding capacity with limit equilibrium methods
A.V. da Fonseca & H. Dias
Design and performance of suction embedded plate anchors
C. Gaudin, Y. Tian, M.J. Cassidy, M.F. Randolph, D.Wang & C.D. O’Loughlin
Soil flow mechanism around deeply embedded plate anchors during monotonic and sustained uplifts
C. Han, D.Wang, C. Gaudin, C.D. O’Loughlin & M.J. Cassidy
Comparison between FEM analyses and full-scale tests of fluke anchor behavior in silty sand
K. Heurlin, S. Rességuier, D. Melin & K.R. Nilsen
Dynamically Installed Anchors: Performance of embedded mooring chain profile in clay
Y. Kim, M.S. Hossain & D.Wang
A review of anchor technology for floating renewable energy devices and key design considerations
J.A. Knappett, M.J. Brown, H. Aldaikh, S. Patra, C.D. O’Loughlin, S.H. Chow, C. Gaudin & J.T. Lieng
Numerical modelling of the SEPLA during keying process
L. Li, F. Yuan, L.Wang & Z. Guo
Behavior of Suction Embedded Plate Anchors with flap during keying in clay
J. Liu, L. Lu, M. Li & L. Yu
Chain configuration in sand, theory and large scale field testing
N. Mortensen
Cyclic response of shallow helical anchors in a medium dense sand
J.T. Newgard, J.A. Schneider & D.J. Thompson
Numerical investigation on line tension-induced pore pressure accumulation around an embedded plate anchor
K. Shen, Z. Guo & L.Wang
Behaviour of OMNI-Max anchors under chain loading
Q.Wei, Y. Tian, M.J. Cassidy, C. Gaudin & C.D. O’Loughlin
Geohazards and integrated studies
Predictions of ice scour loads from small scale tests under 1 g conditions
S. Arnau & A. Ivanovic
Areas 2 and 5 offshore Mozambique: Mass-movements on a deep-water margin with scant adjacent shelf
S.G. Ayers & I.P. Hughes
Turbidity current hazard assessment for field layout planning
M.A. Clare, S. Thomas, M. Cartigny & M. Mansour
Bayesian mechanistic imaging of two-dimensional heterogeneous elastic media from seismic geophysical observations
S. Esmailzadeh, Z. Medina-Cetina, J.W. Kang & L.F. Kallivokas
Optimization of deep-water pipeline routes in areas of geologic complexity – an example from the Southern Gulf of Mexico
W.C. Haneberg, C.A. Devine, D.N.V. Feregrino & M.O. Calderón
Understanding the element of time in probabilistic submarine slope stability analyses
W.C. Haneberg
Effect of fines on mechanical properties of methane hydrate bearing sands
M. Hyodo, S. Kajiyama, A. Kato, A. Nishimura, Y. Nakata & N. Yoshimoto
Numerical analysis of submarine debris flows based on critical state soil mechanics
T. Kobayashi, K. Soga & P. Dimmock
The life cycle of geohazards within an offshore engineering development
A. Lane & S. Tyler
Numerical analysis of stability of seafloor slope under linear waves
T.K. Nian, B. Liu, D.Wang, L. Song & M. Liu
Offshore 1D infinite slope modeling in seismic conditions with OpenSees
C. Piatti, L. Zuccarino & O. Zanoli
Numerical simulations of shallow gas migration in vicinity of platforms in offshore Malaysia: Effects of relief wells on excess pore pressure dissipation
M.J. Rohani, A.N. Norhuda, D. Tami, J.C. Choi & T. Lunne
Geotechnology – Converting site investigations into 3D geotechnical models
M. Sienko, K.L. Kaufmann, R.B. Jørgensen, A. Almholt, J. Dührkop & M. Geduhn
Weak interlayers effects on seismic performance of a deepwater slope
A.C. Trandafir & M.E. Popescu
Integration of very-high-resolution seismic and CPTU data from a coastal area affected by shallow landsliding – the Finneidfjord natural laboratory
M. Vanneste, C.F. Forsberg, S. Knudsen, T.J. Kvalstad, J.-S. L’Heureux, T. Lunne, M.E. Vardy, S. Chand, O. Longva, E. Morgan, A. Kopf, T. Mörz, A. Steiner, J. Brendryen & H. Haflidason
Influence of gas hydrate dissociation on mechanical properties of gas hydrate-bearing sediment
W. Zhang, Q. Li, Y. Li & H. Cun
Soil characterisation and modelling
Effect of pore pressure build-up on the seismic response of sandy deposits
F. Ardoino, D. Bertalot, C. Piatti & O. Zanoli
Potential of estimating relative density by measuring shear wave velocity in field and in laboratory
T. Biryaltseva, S. Kreiter, T. Moerz & T. Lunne
Strength of a carbonate silt at the solid-fluid transition and submarine landslide run-out
N. Boukpeti, D.J. White, M.F. Randolph & N.P. Boylan
Results of geotechnical characterization in the laboratory of clays from offshore Mozambique
L. Brant, R. Sancio, L. Jen & N. Summer
Temperature effects on laboratory measured strength on deep water soft clays
C.S. Gue, T. Lunne & S. Perkins
Procedures for estimating hysteretic foundation damping
J.A.T. Johansson, F. Løvholt & C. Madshus
Development of nonlinear foundation springs for dynamic analysis of platforms
A.M. Kaynia & K.H. Andersen
Planning of soil investigation for GBS foundation design
D.A. Kort, H.J. Pederstad & F. Nowacki
Characterization of in-situ effective stress profiles in clays based on piezo-cone penetration test (CPTU) results
J. Lee, D. Park, D. Kyung, D. Park & I. Kim
New standards and practice of Arctic offshore soil investigation (by Russian experience)
A.S. Loktev
Piezocone evaluation of undrained strength in soft to firm offshore clays
P.W. Mayne, J. Peuchen & D. Baltoukas
Idealized load composition for determination of cyclic undrained degradation of soils
K. Norén-Cosgriff, H.P. Jostad & C. Madshus
A new piston sampler for a remotely operated drilling system
R.S. Santos, M. Alexander, A. Barwise, A.Walta, E. Solhjell & T. Lunne
Some characteristics of carbonate sediments from NorthWest Shelf,Western Australia
S.S. Sharma & H.A. Joer
Predictive equations of shear wave velocity for Bay of Campeche sand
V.M. Taboada, D.C. Roque, P.N. Barrera, S.D.R. Carrión, J.M.H. Duron & K.C. Gan
Strain ε50 and stiffness ratio (E50/Su) for Gulf of Mexico clays
J.Y.Won, H. Suroor, S. Jang & H. Seo
Suitability of Masing rules for seismic analysis of offshore carbonate sediments
N. Yamamoto, S.S. Sharma & C.T. Erbrich
Simulation and experimental study of soil behaviors under principal stress rotations
Y. Yang, Y. Li, Z.Wang & H.-S. Yu
Strength parameters for suction anchors in a high plasticity Ghana clay
S. Yang, T. Lunne, R. Santos, J. Garnon & M. Mansour
The Maximum-Entropy Meshless method for dynamic and coupled analysis of offshore geotechnical problems
N. Zakrzewski & M. Nazem
Shear wave velocity and shear modulus in offshore clays
L. Zuccarino, D.A. Morandi & M. Sottile
In situ and laboratory testing
Method dependency for determining maximum and minimum dry unit weights of sands
Ø. Blaker, T. Lunne, T. Vestgården, L. Krogh, N.V. Thomsen, J.J.M. Powell & C.F.Wallace
Shear strength of dense to very dense Dogger Bank sand
Ø. Blaker & K.H. Andersen
Assessment of dissipation tests in silty soils with standard and non-standard decay
R. Carroll & M. Long
Stiffness degradation and damping of carbonate and silica sands
J.A.H. Carraro & M.S. Bortolotto
Cyclic laboratory testing of chalk to improve the reliability of piled foundation design
D.L. Coyne, M. Rattley, P. Houlston, I. Alobaidi, A. Benson & C. Russell
Measurement and interpretation of downhole seismic probe data for estimating shear wave velocity in deep-water environments
H.Q. Nguyen, D.J. DeGroot, M. Meidani, M. Vanneste & T. Lunne
The variation of the T-bar bearing capacity factor at shallow depths
J.R.M.S. Oliveira, M.S.S. Almeida, K.I. Rammah, P.C. Trejo & M.C.F. Almeida
Weak fractured rock coring via a seafloor based drilling system – a case study
S. Payor, H.Q. Nguyen, M. Quirk & H. Faizi
Measurement uncertainty of offshore Cone Penetration Tests
J. Peuchen & J. Terwindt
An instrumented sampler and its application for suction caisson design
B.W. Porter
Comparison of shear modulus from SCPT, PS logging & laboratory tests of offshore Myanmar
D. Tami &A.R. Jaapar
Visualizing the failure surface of a laboratory vane shear in soft clay using transparent surrogate soil
J.F.Wallace, C.M. Chini, C.J. Rutherford & J.M. Peschel
A specialized triaxial testing technique for deep-sea pressure core sediments
J. Yoneda, A. Masui & N. Tenma
Numerical investigation of ball penetrometer performance in dense sand overlying uniform clay
M. Zhou, Y. Hu & M.S. Hossain
Rock-steel interface testing and considerations for gravity foundations for tidal energy generators
A.D. Ziogos, M.J. Brown, A. Ivanovic & N. Morgan
Jack-up units
The effects of jack-up installation procedures on spudcan capacity in offshore carbonate sediments
A. Amodio, T.M. Chang, V. Kong & C. Erbrich
A finite element study of boulder interaction with spudcans
H. Curtis & P. Allan
Findings of the ISSMGE jack-up leg penetration prediction event
B.F.J. van Dijk & A.G. Yetginer
Finite element analyses of spudcan – subsea template interaction during jack-up rig installation
H.K. Engin, H.D.V. Khoa, H.P. Jostad & T. Alm
Estimation of spudcan penetration using a probabilistic Eulerian finite element analysis
S. Fallah, K. Gavin & E. Moradabadi
Calculations of leg penetrations of heavy lift jack-up vessels in multi-layered soils
J. Lüking & V. Karge
Effects of consolidation during spudcan installation in carbonate silty clay: A dual approach 1293
R. Ragni, B. Bienen, D.Wang & M.J. Cassidy
Squeezing bearing capacity and effects of increasing strength with depth
M. Ramos da Silva, C.C. Smith & J. Jurko
Stability assessment of A-shaped mudmats of mobile production units
R. Silvano, C. Jaeck, H. Versteele, A. Longuet & D. Bignold
Linear and nonlinear foundation response in dynamic analyses of jack-up structures
K.S. Skau, Ø. Torgersrud, H.P. Jostad, H. Hofstede & S. Hermans
Comparison of coupled and decoupled approaches to spudcan-pile interaction
K.K. Tho, N. Chan & J. Paisley
Sinkage analysis of A-shaped jack-up mudmats using the Coupled Eulerian Lagrangian approach
H. Versteele, C. Jaeck, R. Silvano & D. Bignold
Mariner and Gina Krog jack-up foundation challenges
G. Yetginer, G. Håland & G. Svanø
A novel spudcan design for improving foundation performance
X.Y. Zhang, Y.P. Li, Y. Yang, J.T. Yi, F.H. Lee, P.L. Tan, J.F.Wu & S.Q.Wang
Jack-up spudcan penetration analysis: Review of semi-analytical and numerical methods
Y. Zhang, H.D.V. Khoa, V. Meyer & M.J. Cassidy
Design, risk and reliability
A perspective on selecting design strength: Gulf of Mexico deepwater clay
J.Y. Cheon, D.R. Spikula, A.G. Young, R.B. Gilbert & P. Jeanjean
Reliability-based design optimization of laterally loaded monopile foundations for offshore wind turbines
I. Depina & G. Eiksund
A reliability approach to cable risk assessment
S. Gooding, P. Allan, P. Errington & J. Hunt
Approach for the calibration of the load and resistance factors for axial pile capacity calculations
S. Lacasse, F. Nadim, Z.Q. Liu &Y.J. Choi
Accounting for the spatial variability of soil properties in the reliability-based design of offshore piles
Z. Liu, S. Lacasse, F. Nadim, M. Vanneste & G. Yetginer
Uncertainty-based characterization of piezocone and T-bar data for the Laminaria offshore site
L.J.H. Li, M. Uzielli & M.J. Cassidy
Comparison of DNV and API design codes for design of suction anchors
K. Schroeder & S. Resseguier
A safety concept for penetration analyses of suction caissons in sand
H. Sturm, F. Nadim & A. Page
Author index