Frontiers in Offshore Geotechnics: Proceedings of the International Symposium on Frontiers in Offshore Geotechnics (IS-FOG 2005), 19-21 Sept 2005, Perth, WA, Australia, 1st Edition (Pack) book cover

Frontiers in Offshore Geotechnics

Proceedings of the International Symposium on Frontiers in Offshore Geotechnics (IS-FOG 2005), 19-21 Sept 2005, Perth, WA, Australia, 1st Edition

Edited by Susan Gourvenec, Mark Cassidy

CRC Press

1,130 pages

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Description

This book addresses current and emerging challenges facing those working in offshore construction, design and research. Keynote papers from leading industry practitioners and academics provide a comprehensive overview of central topics covering deepwater anchoring, pipelines, foundation solutions for offshore wind turbines, site investigation, geohazards and emerging Australian frontiers. A further 125 peer reviewed papers introduce and analyse the critical challenges of offshore geotechnical engineering in the areas of the keynote subjects as well as piling, caissons and shallow foundation systems. The papers collected in these proceedings report a variety of numerical and theoretical investigations, experimental programs and field experience, with established design methods discussed alongside state-of-the-art practices.

Table of Contents

Keynote papers

Suction anchors for deepwater applications

Vertically loaded plate anchors for deepwater

Australian frontiers – spudcans on the edge

Suction caissons for wind turbines

Pipeline geotechnics – state-of-the-art

An operator’s perspective on offshore risk assessment and geotechnical design in geohazard-prone areas

Offshore site investigations: new frontiers

Deepwater developments: drag and plate anchors

Influence of anchor geometry and soil properties on numerical modeling of drag anchor behavior in soft clay

The effect of interface friction on the performance of drag-in plate anchors

Proposed upper bound analysis for drag embedment anchors in soft clay

Ultimate pullout capacity of SBM’s VErtically Loaded Plate Anchor (VELPA) in deep sea sediments

Effects of long term loading on storm capacity of vertically loaded anchors

An experimental and numerical study of rate effects for plate anchors in clay

Vertical pullout behavior of plate anchors in uniform clay

Pullout capacity of circular plate anchors in double-layered clays

The use of inflatable anchors in offshore sandy soils

Deepwater developments: suction caissons

Suction caisson soil displacement during installation

Lessons learned from several suction caisson installation projects in clay

Centrifuge tests on axial capacity of suction caissons in clay

Evaluation of recovery of wall friction after penetration of skirts with laboratory and field tests

Study of sand heave formation in suction caissons using Particle Image Velocimetry (PIV)

Electrokinetic and electrochemical stabilization of caissons in calcareous sand

Vertical uplift capacity of suction caisson in clay

Capacity of suction caissons under inclined loading in normally consolidated clay

A failure surface for caisson foundations in undrained soils

Parametric finite element analyses of suction anchors

Centrifuge modelling of suction piles in clay

Establishing a model testing capability for deep water foundation systems

Reliability-based design considerations for deepwater mooring system foundations

Validation of the use of beam-column method for suction caisson design

Validation of the use of finite element method for suction caisson design

Developments in the Australian frontiers

Geotechnical interpretation for the Yolla A Platform

Preloading of drag anchors in carbonate sediments

The geotechnical performance of Deep Penetrating Anchors in calcareous sand

Seabed geotechnical characterisation with a ball penetrometer deployed from the Portable Remotely Operated Drill

Static and cyclic behavior of laterally loaded piles in calcareous sand

Foundation solutions for offshore wind turbines

Design aspects of monopiles in German offshore wind farms

Finite element modelling of horizontally loaded monopile foundations for offshore wind energy converters in Germany

Tripods with suction caissons as foundations for offshore wind turbines on sand

The tensile capacity of suction caissons in sand under rapid loading

Moment loading of caissons installed in saturated sand

The theoretical modelling of a suction caisson foundation using hyperplasticity theory

Shallow foundations: vertical bearing capacity

Bearing capacity of parallel strip footings on non-homogeneous clay

Study on bearing behaviors of foundations on multi-layer subsoil

Numerical study of shallow foundations on calcareous sand

Undrained bearing capacity of shallow foundations on structured soils

An investigation into the vertical bearing capacity of perforated mudmats

Shallow foundations: combined loading

Yield loci for shallow foundations by ‘swipe’ testing

Investigating 6 degree-of-freedom loading on shallow foundations

Single surface hardening model – a system law to describe the foundation-soil interaction

Bearing capacity of strip footings subjected to complex loading

Numerical analysis of bearing capacity of foundation under combined loading

Centrifuge tests on improving offshore foundation systems

Shallow foundations: mobile jack-up units

Extraction of jackup spudcan foundations

Numerical simulation of the breakout process of an object at the ocean bottom

Spudcan penetration in sand overlying clay

Punch-through of spudcan foundations in two-layer clay

Influence of jack-up operation adjacent to a piled structure

FE modelling of spudcan – pipeline interaction

Jack-up footing penetration and fixity analyses

Breakwater caissons and liquifaction

Performance of caisson breakwater subjected to breaking wave loads

An interaction model for seismic stability analysis of caisson type structure

Progressive ocean wave modelling in drum centrifuge

Numerical analysis of dynamic response of seabed under random wave loading

Pipelines

The performance of pipeline ploughs in layered soils

Physical and numerical modelling of lateral buckling of a pipeline in very soft clay

Bearing capacity and large penetration of a cylindrical object at shallow embedment

Stability design of untrenched pipelines – geotechnical aspects

Pipeline-seabed interaction analysis subjected to horizontal cyclic loading

A numerical model of onset of scour below offshore pipelines subject to steady currents

Arctic seabed ice gouging and large sub-gouge deformations

Model tests to simulate riser-soil interaction in touchdown point region

Capacity of piles in sand

Results from axial load tests on pipe piles in very dense sands: the EURIPIDES JIP

CPT-based design method for steel pipe piles driven in very dense silica sands compared to the Euripides pile load test results

Bearing capacity of driven piles in sand, the NGI approach

The UWA-05 method for prediction of axial capacity of driven piles in sand

An updated assessment of the ICP pile capacity procedures

A general framework for shaft resistance on displacement piles in sand

Field research into the effects of time on the shaft capacity of piles driven in sand

Design criteria for pipe piles in silica sands

Estimating the end bearing resistance of pipe piles in sand using the final filling ratio

Evaluation of end-bearing capacity of open-ended piles driven in sand from CPT data

Evaluation of end-bearing capacity of closed-ended pile in sand from cone penetration data

The influence of effective area ratio on shaft friction of displacement piles in sand

A centrifuge study of the monotonic and cyclic resistance of piles and pile groups in sand

Correlations for shaft capacity of offshore piles in sand

Axial load tests on pipe piles in very dense sands at Ras Tanajib

Piles

Bearing capacity of driven piles in clay, the NGI approach

Lateral pile design of the Ursa tension leg platform

Case study on soil plugging of open-ended steel pipe piles in Tokyo Bay

Foundation capacity of piled offshore platforms

Soil characterization for consistent reliability in the Load and Resistance

Factor Design of pile foundations

Buckling considerations in pile design

Propagation of pile tip damage during installation

One dimensional wave propagation analysis of an open-ended pipe pile with consideration of the excess pore pressure in soil plug

Simplified analysis of single pile subjected to dynamic active and passive loadings

Simplified dynamic analysis of pile group subjected to horizontal loading

Reliability analysis on axially loaded pile foundation of offshore platforms

Numerical analysis of pile axial loading test on Ryukyu calcareous sediments

A preliminary investigation into the effect of axial load on piles subjected to lateral soil movement

Modelling combined loading of piles with local interacting yield surfaces

Assessing geohazards

Assessment of the hydrate geohazard

Gas hydrates and their potential effects on deep water exploration activities

OpenSees modeling of the 3D plastic behavior of underwater slopes: achievements and limitations

3DSTAB: a history of 3D stability analysis applied in offshore geotechnics

A study of ice as an analog of methane hydrate on the basis of static shear strength

Tackling geohazards – a case study from the Turkmenistan shelf, Caspian Sea

Site investigation techniques

Deepwater geotechnical site investigation practice in the Gulf of Guinea

The origin of near-seafloor “crust zones” in deepwater

Casing mounted method used for geotechnical drilling in Lavan

Self/barge Installing Platform, SIP II: the Calder experience

Assessment of sand quality using seismic techniques at Fisherman Islands, Brisbane

Site characterization of Bootlegger Cove clay for Port of Anchorage

The geotechnical diving bell – equipment used in Brazil to perform nearshore and offshore geotechnical investigations

Conquering new frontiers in underwater cone penetration testing

Cyclic friction piezocone tests for offshore applications

Practice notes on push-in penetrometers for offshore geotechnical investigation

Comparison of cone and T-bar factors in two onshore and one offshore clay sediments

Considerations in evaluating the remoulded undrained shear strength from full flow penetrometer cycling

Well deformations at West Azeri, Caspian Sea

Borehole squeezing in soft clays

Soil characterization

Modelling the effects of structure in deep-ocean sediments

Simulating the mechanical behaviour of some calcareous soils using the Structured Cam Clay model

Degradation of cementation for artificially cemented carbonate sands

Detection of slight cementation in offshore carbonate deposits from laboratory testing

Experimental study on cyclic pore water pressure and volumetric changes of saturated loose sands under complex stress condition

Some geotechnical specificities of Gulf of Guinea deepwater sediments

Mineralogical characteristics of the Gulf of Guinea deep water sediments

On the compressibility of deepwater sediments of the Gulf of Guinea

On the classification of Bangkok clay deposits and their compressibility

Long-term consolidation behavior of Pleistocene clays in Osaka Bay and applicability of elasto-viscoplastic one-dimensional consolidation model

Influence of salinity on soil properties

The determination of undrained shear strength and plasticity properties from quasi-static penetration tests

Influence of height and boundary conditions in simple shear tests

About the Editors

Dr Susan Gourvenec is a Lecturer at the Centre for Offshore Foundation Systems (COFS) at the University of Western Australia. Dr Gourvenec joined COFS in 2001, where she works in the area of offshore shallow foundations with particular emphasis on the effect of combined loading. Her current research interests include the bearing and tensile capacity of skirted foundations under general loading and the pull-out capacity of suction caissons under inclined loads using numerical methods and geotechnical centrifuge modelling.

Dr Mark Cassidy is a Senior Lecturer at the Centre for Offshore Foundation Systems (COFS) at the University of Western Australia. His current research interests include the development of numerical models for shallow foundation behaviour, risk assessment and the optimisation of offshore foundation systems, fluid-structure-soil interaction and geotechnical centrifuge modelling.

Subject Categories

BISAC Subject Codes/Headings:
TEC009020
TECHNOLOGY & ENGINEERING / Civil / General
TEC063000
TECHNOLOGY & ENGINEERING / Structural