Proceedings of the 12th International Conference on Offshore Mechanics and Arctic Engineering, OMAE’93, Volume 1: Offshore Technology, ISBN: 0-7918-0783-5 (summary)

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P R O C E E D I N G S O F T H E 1 2 T H I N T E R N A T I O N A L C O N F E R E N C E O N

P1993-4

Volume 1

O F F S H O R E IVI E C H AN ICS AND

A R C T I C E N G I N E E R I N G

V O L U M E I

O F F S H O R E TECHNOLOGY

P R O C E E D I N G S O F T H E 12TH INTERNATIONAL C O N F E R E N C E ON

O I V I / X E 1 9 9 3

O F F S H O R E M E C H A N I C S AND A R C T I C E N G I N E E R I N G

VOLUME I

OFFSHORE TECHNOLOGY

The American Society of Mechanicai Engineers, USA TWI (formerly the Welding Institute), UK Institution of Mechanical Engineers, UK The Canadian Society'for Mechanical Engineering, Canada The Nowegian Society of Chartered Engineers,

Nonway Dansk Ingeniorforening, Denmark American Concrete Institute, USA Energy Rubber Group, A.C.S., USA American Society of Civil Engineers, USA Conseil de Liaison des Assoc. de Recherche sur les Ouvrages en Mer, France Chinese Society of Ocean Engineers, China Deutsches Komittee fur Meeresforschung und Meerestechnik, e.V. Germany Institution of Engineers of Ireland, Ireland

Korean Institute of Metals, Korea Royal Flemish Engineers Association. Belgium National Association of Corrosion Engineers, USA Office of Science and Technology, Australia The Japan Society of Mechanical Engineers, Japan The Society of Naval Architects of Japan, Japan Portuguese Institute of Naval Architecture & Marine Engineering, Portugal European Safety and Reliability Association The Petroleum Society of CIM, Canada Canadian Petroleum Association, Canada Registro Italiano, Italy Institute of Materials, UK

TOPICS PRESENTED

O c e a n Waves and Energy Hydrodynamic F o r c e s

Computational Hydrodynamics Fluid-Structure Interaction Motions of Floating Structures Ship IViotion

R i s e r s , Moorings, and C a b l e s Design of Offshore Structures

Structural and Geotechnical M e c h a n i c s PRESENTED AT

THE 12TH INTERNATIONAL CONFERENCE ON

OFFSHORE MECHANICS AND ARCTIC ENGINEERING Glasgow, Scotland

June 20-24, 1993

ORGANIZED BY

The Offshore Mechanics and Arctic Engineering Division, ASME

TWI (formerly the Welding Institute), UK

EDITED BY

S. K. CHAKRABARTI CHICAGO BRIDGE & IRON CHRISTIAN AAGE

TECHNICAL UNIVERSITY OF DENMARK HISSAKI MAEDA

UNIVERSITY OF TOKYO A. NEIL WILLIAMS

UNIVERSITY OF HOUSTON DENBY MORRISON

SHELL DEVELOPMENT COMPANY

T H E A M E R I C A N S O C I E T Y O F M E C H A N I C A L E N G I N E E R S United Engineering Center • • 345 East 47th Street • • New York, N.Y 10017

Statement from By-Laws; The Society shall not be responsible for statements or opinions advanced in papers . . . or printed in its publications (7.1.3)

Authorization to photocopy material for internal or personal use under circumstances not falling within the fair use provisions of the Copyright Act is granted by ASME to libraries and other users registered with the Copyright Clearance Center (CCC) Transactional Reporting Service provided that the base fee of $0.30 per page is paid directly to the CCC, 27 Congress Street, Salem, MA 01970. Requests for special permission or bulk reproduction should be addressed to the ASME Technical Publishing Department.

ISBN No. 0-7918-0783-5

Library of Congress Catalog Number 82-70515

Copyright © 1993 by

THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved

TECS;,\\'CCSJE UrJIVERSITEIT

Laboratorium voor

The offshore activity in recent days is moving at a littie faster pace than in the last several years.

Besides the deep water activities in the Gulf of IVlexico, other offshore areas are seeing increased

exploration and production of oil and gas. Some of these areas are offshore West Africa, offshore

Austraiaia, North Sea, offshore Brazil, South China Seas, and other far eastern countries. The

emphasis has been in floating structure development.

This is reflected in this year's Offshore Technology Symposium. There are several sessions

dealing with floating structure dynamics and designs. In addition, the symposium covers many

offshore technology related subjects. The topics are current and timely and cover such areas as

analysis and design methodology, hydrodynamics, field and small scale experiments.

The Offshore Technology Symposium volume includes the following topics:

• Ocean Waves and Energy

• Hydrodynamic Forces and Their Computation Methods

• Fluid-Structure Interaction

• Motions of Floating Offshore and Ship Structures

• Risers, Moorings and Cables

• Design of Offshore Structures and Structural Mechanics

• Re-Assessment of Jaclcet Structures

All papers appearing in this volume have been reviewed by the respective technical experts

whose names have been gratefully acknowledged. We apologize for any names of the reviewers

missing from the list. Credit for this volume goes to all the session organizers listed in the book.

S. K. Chakrabarti

O F F S H O R E T E C H N O L O G Y S Y M P O S I U M S E S S I O N O R G A N I Z E R S

Christian Aage, The Technical University of Denmark, Lyngby, Denmark James N. Brekke, Exxon Production Research Co., Houston, Texas, USA Gunther F. Clauss, Technische Universitat Berlin, Berlin, Germany R. Cengiz Ertekin, University of Hawaii at Manoa, Honolulu, Hawaii, USA Ove T. Gudmestad, Statoil, Stavanger, Norway

IVI. R. Haddara, University of Newfoundland, St. Johns, Canada

IVlogens Henriksen, University of North Dakota, Grand Forks, North Dakota, USA Hisaaki IVIaeda, University of Tokyo, Tokyo, Japan

Denby G. Morrison, Shell Development Co., Houston, Texas, USA Dag Myrhaug, Norwegian Institute of Technology, Trondheim, N o r w a y Finn G. Nielsen, Norsk Hydro Research Centre, Bergen, Norway Thomas E. Schellin, Germanischer Lloyd, Hamburg, Germany Charles Sparks, Institut Frangais du Petrole, France

William Stewart, Stewart Technology Assoc., Houston, Texas, USA Henry T. Wang, Oregon State University, Corvallis, Oregon, USA A. Neil Williams, University of Houston, Houston, Texas, USA

L I S T O F R E V I E W E R S

C. Aage R. B. Guenther M. Miyakawa A. F. Aboulazm G. Hagerman D. G. Morrison H. Bannon K. J . Han S. Omatsu D. W. Bass E. A. Hansen M. Pantazopoulos R. G. Bea S. B. Hodges J . R. Paulling J. L Black G. C. Hoff J. B. Petersen M. Booton N. Hookey A. Reitan N. Bose C. T. Howell J. U. Romeling M. B. Bryndum C. C. Hsiung K. N. Runge S. M. Calisal K. Ikegami G. Sabin W. F. Chen Y. Inoue K. Saito C. Y. Chen J , J , Jensen S. E. Sand R. B. Chiou P. Jorgensen T. Sarpkaya A. J . Chorin H. Kagemoto L H. SeidI B. Colbourne J . W, Kamman J. Skourup J . 1. Collins M. Kashiwagi C. S. Sollitt D. C. Cotter N. Kato M. J . Sterndorff C. Dahl T, Kinoshita H. Suzuki R. De R. C. Kloosterziel T. Uri R. Deigaard R. D. Larrabee H. T. Wang K. A. Digre R. W. Litton S. Will R. C. Ertekin J . R. Lloyd N. Williams J . Falnes P. Marshall H. B. Xu

F. J . Fischer J . A. Mercier J. J . Zimmerman

P R O C E E D I N G S OF THE 12TH I N T E R N A T I O N A L C O N F E R E N C E ON O F F S H O R E M E C H A N I C S AND A R C T I C E N G I N E E R I N G

1993 O M A E

-V O L U M E I - O F F S H O R E T E C H N O L O G Y Ocean Waves and Energy

Hydrodynamic Forces

Computational Hydrodynamics Fluid-Structure Interaction Motions of Floating Structures Ship Motion

Risers, Moorings, and Cables Design of Offshore Structures

Structural and Geotechnical Mechanics V O L U M E II - S A F E T Y AND RELIABILITY Risk Analysis

Fire and Pollution Safety Structural Reliability Fatigue Reliability

Probabilistic Modelling of the Wave Environment

Probabilistic Response Modelling Uncertainties in Geotechnical Properties Reliability of Offshore Structures

V O L U M E III - MATERIALS ENGINEERING, PART A Strength Mismatching of Welds

HAZ and Weld Metal Properties Underwater and Hyperbaric Welding

High Strength Steel for Offshore Applications Welding Control

Applications of GRP Offshore Performance of Composite Materials High P r e s s u r e High T e m p e r a t u r e Sealing

Systems

V O L U M E III - MATERIALS ENGINEERING, PART B Fatigue Crack Growth

Fatigue Behavior Tubular Joints

European Coal and Steel Community -Research on Fracture and Fatigue Fracture Control

Fracture Toughness and Assessment of Welds Stress Intensity Factors

Inspection, Repair, and Life Extension of Offshore Structures

V O L U M E IV - ARCTIC/POLAR T E C H N O L O G Y Mechanical Properties of Ice

Ice Engineering

Ice-Structure Interaction Arctic Operations Permafrost Engineering

V O L U M E V - PIPEUNE T E C H N O L O G Y Offshore Pipeline Technology

Geotechnical Issues Permafrost

Pipeline Corrosion and Protection Pipeline Integrity

Materials and Welding Pipeline Simulation Pipeline Automation

C O N T E N T S

OCEAN W A V E S AND ENERGY

Experimental Study of Wave Groups in Ocean Swell

Thomas H. Dawson and David L Kriebel 1

Synthesis and Modelling of Directional Waves in a Wave Basin

J. J. Murray, L M. Mak, and M. A. Sullivan 9

The Effect of Non-Colinear Wave, W i n d , and Current Loading on Dynamic Response of a Tension Leg Platform

A. Incecik 17

Effect of Steady Currents on Directional Wave Spectra

Okey Nwogu 25

HYDRODYNAMIC F O R C E S

Hydrodynamic Force Corrections for Model Tests in a Narrow Wave Tank

P. Mclver 3 3 Flow Past Oscillating Cylinders

Ronald W. Yeung and M. Vaidhyanathan 3 9

Nonlinear Runup of Random Waves on a Large Cylinder

David L Kriebel 49

Wave-Current Forces on Vertical Cylinders in Tandem Array for Irregular Waves Combined With Opposing Current

Yu-Cheng Li and Feng-Long Wang 57

On the Prediction of Wave-Induced Forces

John C. Doering 55

Wave Force and Flow Interference Effect on Vertical Cylinders

Nicholas Haritos and Ying Q. He 7 3

Full Scale Test Results for Ship Ice Impact Forces and Pressures

G. Abdel Ghoneim 4 3 3

Steady Forces Due t o Onset Flow and Waves on Wall-Sided Bodies in Finite Depth Water

P. J. Clark, S. Malenica, and B. Molin 83 COMPUTATIONAL HYDRODYNAMICS

On the Far Field Condition o f t h e Second Order Velocity Potential for Wave Diffraction Problems

S. Chen and O. Mahrenholtz 4 5 3

Approximation of Hydrodynamic Loads on Multi-Column Floating Platforms

A. Neil Williams and Tyagi Rangappa 91

On the Second-Order Bichromatic Wave Field Produced by a Flap-Type Wavemaker in a Two-Dimensional Flume

Walid I. Moubayed and A. Neil Williams 99

Non-Gaussian Properties of Second-Order Sum Frequency Responses in Irregular Waves: A Numerical Study

Carl T. Stansberg : 481

FLUID-STRUCTURE INTERACTION

The Dynamic Response Characteristics of Vertical Cylinders in T w o and Three Dimensional Irregular Wave Climates

Nictiolas Haritos 107

Earthquake Response of Elastic Axisymmetncal Rotational Shell in Water

Osamu Saijo

Horizontal Motions of an SPM Tanker Under Alternative Mooring Configurations

T. Jiang, T. E. Schellin, and S. D. Sharma 123

Study on Motions and Wave Resistance on Cone Type Structure With a Constant Forward Speed in Waves

Yasuo Fujisawa, Koichi Masuda, and Hisaaki Maeda 133

Coupled Behaviors of a Moored Platform and a Cold Water Pipe in Regular and Irregular Waves

Hisaaki Maeda, H. S. Shin, and S. Miyajima 141

Dual Time-Frequency Random Analysis of a Compliant Tower

Edison C. P. de Lima, Ana Lucia F. Lima Torres,

Luis Volnei S. Sagrilo, Marcos Q. Siqueira and Paulo Mauricio Videiro 149

Dynamic Motion Responses on an Inclined Offshore Structure Including Restoring Forces Due to Forward Speed Effect

Tong-Ming Wu and K. S. Varyani 459

MOTIONS OF FLOATING S T R U C T U R E S

Dynamic Response of a Spar Buoy: A n Experimental/Numerical Comparison

Christopher H. Jenkins, Krisnaldi Idris, John W. Leonard, and

Solomon C.S. Yim 157

Nonlinear Dynamic Analysis of Single Leg Moored Offshore Structures in Random Sea Waves

Rujian Ma 467

The Influence of Spectral Wave Characteristics on the Dynamics of a Turret Mooring System

J. O. de Kat and A. Dercksen 167

Nonlinear Simulation Model of Slow Drift Oscillation of a Floating Body W i t h Finite Amplitude Motions

Y. Tanaka and T. Nakamura 175

Wind Loads on Moored and Manoeuvring Vessels

Werner Blendermann 1^-^

Dynamic Response of Floating Structures in Water of Variable Depth

Yuh-Lin Hwang 1^1

The Influence of Structural Damping on the Dynamic Response of Compliant Vertical Surface-Piercing Cylinders

Nicholas Haritos and Murray Townsend I^^

Hydrodynamic Damping Estimation and Scaling for Tension Leg Platforms

K. P. Thiagarajan and A. W. Troesch 473

Synthesis of First Order TLP Wave Load From Semi-Analytical Solutions for Pontoons and Columns

T. P. Mullarkey and J. F. McNamara • 207

Modelling Aspects of Wave Kinematics in Offshore Structures Dynamics

P. Spanos, R. Ghanem, and S. Bhattacharjee. • 213 Nonlinear Effects in Floating Platform Response Using Time-Domain Simulation Methods

A. S. Chitrapu and R. C. Ertekin 219

SHIP MOTION , Cavitation and Hydrodynamic Performance of a Propeller in a Simulated Ice-Blocked Flow

Dan Walker, Neil Bose, and Hajime Yamaguchi 229

Experimental Study of Roll Damping of Fishing Vessels Moving With Forward Speed

M. R. Haddara and Suimin Zhang

Potential for Ship Control

Michael Hinchey 245

Prediction of a Vessel's Motion in a Given Sea State

J. David Howard, Sander M. Calisal, Gerald N. Stensgaard, and

Leon Barnard 251

Neural Network Fits to Ship Data

Michael Hinchey 263

R I S E R S , MOORINGS AND C A B L E S

Bi-Frequency Analyses of Mooring Line Dynamics

Xiaohong Chen, Wei Ma, and Xianglu Huang 267

Experimental Study on Hydrodynamic Properties of a New Mooring System

Mikio Takaki, Masanori Kobayashi, and Yousuke Shikata 275

Regular and Random Wave Interaction With a Long Flexible Cylinder

Arun S. Duggal and John M. Niedzwecki 283

Collision Behavior of a Pair of Long Flexible Cylinders in Close Proximity

John M. Niedzwecki and Arun S. Duggal 291

Active Control for Installation of Flexible Underwater Slender Structure

Hideyuki Suzuki, Koichiro Yoshida, and Eigo Miyazaki 299

DESIGN OF OFFSHORE S T R U C T U R E S

Design of Concrete Platforms After Sleipner A-1 Sinking

Wenche K. Rettedal, Ove T. Gudmestad, and Truls Aarum 309

Minimizing Forces and Motions of Large Offshore Structures

Günther F. Clauss and Lothar Birk 321

A Mixed Panel-Stick Hydrodynamic Model Applied to Fatigue Life Assessment of Semi-Submersibles

L. Leblanc, F. Petitjean, F. Le Roy, and X. B. Chen 331

Offshore Structural Topology Synthesis by Optimal Growth

William K. Rule 339

Automated Intervention by Underwater Robotics With A i d of Off-Line Programming

Joao Mauricio Rosario, Luis Carlos P. Messina, Hans R. Niemman, and

Eckard Aust 347

A Concrete Platform for Re-Use in Variable Water Depths, With Varying Topside Functions and Weights

e. L. Stead and Ove T. Gudmestad 355 Neural Network Method for Inverse Kinematics Near Singular Configurations

Anand M. Sharan and Raghu Balasubramanian 363

Offshore Well Completion Operational Knowledge Acquisition and Structuring

Celso K. Morooka, Armando F. da Rocha, Kazuo Miura, and

Llndeniro Alegre 371

Rational Random Wave Design of Compliant Towers

Denby G. Morrison and John S. Leonard 543

STRUCTURAL AND GEOTECHNICAL MECHANICS

Analysis of Deeply Embedded Structures in a Layered Half-Space

Celso Romanel and Tribikram Kundu 379

Compression Stability of High-Strength Cellular Double-Hull Ship Structure

R. J. Dexter, J. M. Rides, L.-W. Lu, A. A.-K. Pang, and

J. E. Beach 391

Ultimate Strength Analysis of Ring-Stiffened Cylinders Under Hydrostatic Pressure

Chi-Mo Park and Sang-Jeon Yim 3 9 9

Local Joint Flexibility of Tubular Joints

Jaime Buitrago, Brian E. Healy, and T. Y. Chang 405

Finite Element Simulation of Rectangular Hollow Section Tee Joints: Effect of Chord Wall Slenderness and Presence of Out-Of-Plane Braces

Gwynne Davies and Peter Crockett 417

r

Microstructure Studies of Lime Treated Marine Clays

S. Narasimha Rao, K. V. Subba Rao, and G. Rajasekaran 425 RE-ASSESSMEIMT OF J A C K E T S T R U C T U R E S

Nonlinear Re-Assessment of Jacket Structures Under Extreme Storm Cyclic Loading: Part 1 — Philosophy and Acceptance Criteria

Graham Stewart, Torgeir Moan, Jorgan Amdahl, and Oddvar I. Eide 491

Nonlinear Re-Assessment of Jacket Structures Under Extreme Storm Cyclic Loading: Part II — Representative Environmental Load Histories

Graham Stewart and P. S. Tromans 503

Nonlinear Re-Assessment of Jacket Structures Under Extreme Storm Cyclic Loading: Part III - The Development of Structural Models for Cyclic Response

Ernst Eberg, Oyvind Hellan, and Jorgen Amdahl 517

Nonlinear Re-Assessment of Jacket Structures Under Extreme Storm Cyclic Loading: Part IV - Case Studies on Existing North-Sea Platforms

Oyvind Hellan, Trond Tandberg, and Nils Christian Hellevig 529