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Developments in Marine Technology, 2

P1985-10

B

©SS

Behaviour of

Offshore

Structures

Proceedings of the 4th International Conference on Behaviour of Offshore Structures

(BOSS '85), Delft, The Netherlands, July 1 - 5 , 1985

Edited by

J.A. BATTJES

Department of Civil Engineering, Delft University of Technology, Delft, The Netherlands

ELSEVIER

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ELSEVIER SCIENCE PUBLISHERS B.V. Wlolenwerf 1 ,

P.O. Box 2 1 1 , 1000 AE Amsterdam, The Netherlands

Distributors for the United States and Canada: ELSEVIER SCIENCE PUBLISHING COMPANY INC. 5 2 , Vanderbilt Avenue

New Y o r k , NY 10017

ISBN 0-44442513-6 ( V o l . 2) ISBN 0-444-42384-2 (Series)

© Elsevier Science Publishers B.V., 1985

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any f o r m or by any means, electronic, mechanical, photcopying, recording or otherwise, w i t h o u t the prior written permis-sion of the publisher, Elsevier Science Publishers B.V./Science & Technology Divipermis-sion, P.O. Box 3 3 0 , 1000 A H Amsterdam, The Netherlands.

Special regulations for readers in the USA - This publication has been registered w i t h the Copyright Clearance Center Inc. (CCC), Salem Massachusetts. Information can bo obtained f r o m the CCC about conditions under which photocopies of parts of this publication may be made in the USA. All other copyright questions, including photocopying outside of the USA, should be referred to the copyright owner, Elsevier Science Publishers B.V., unless otherwise specified.

Papers B13 and C I 4 © Crown in Right of Canada.

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4 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 ON B E H A V I O U R O F O F F S H O R E S T R U C T U R E S Delft, The Netherlands, July 1 - 5 , 1985

Sponsored by

Delft University of Technology, The Netherlands Centre for Marine Technology, London University, U K Massachusetts Institute of Technology, USA

Norwegian Institute of Technology, Norway

International Organizing Committee

E.W. Bijker (The Netherlands) C, Chryssostomidis (USA)

T. Moan (Norway) S. Montgomery (UK) P.L. Pratt (UK)

Local Organizing Committee

J.A. Battjes

E.W. Bijker (chairman) A . N . Neumann J.N. Ringers A . Starink

Scientific Committee

J.A. Battjes (chairman). Delft University of Technology, Delft J. Gerritsma, Delft University of Technology, Delft

J.F. Haardt, Heerema Engineering Service, Lefden C.H. Hulsbergen, Delft Hydraulics Laboratory, Delft M.F.J.M. Kroezen, Delft Soil Mechanics Laboratory, Delft

G. van Oortmerssen, Maritime Research Institute Netherlands, Wageningen J. Strating, Protech International, Schiedam

Ch.J. Vos, Delta Marine Consultants, Gouda

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V I

F O R E W O R D

The BOSS conferences are 3-yearly conferences sponsored by the Centre of Marine Technology, London University ( U K ) , the Delft University of Technology (The Netherlands), the Massachusetts Institute of Technology (USA) and the Norwegian Institute of Technology (Norway). The conferences of 1976, 1979 and 1982 were held respectively in Trondheim, London and Cambridge, Massachusetts.

The conference title, Behaviour of Offshore Structures, implies that the behaviour of offshore struc-tures is the sole subject of the conferences, whereas the actual scope is much wider and also includes the design and design conditions.

The main idea behind the conferences has been, and still is, that researchers in the broad field con-nected w i t h offshore structures report on their latest work before a f o r u m of colleagues and users. This w o r k , which is fundamental in principle, concerns the forces exerted by the environment on the struc-tures as well as the reaction of the structure and soil t o these forces. Typical material properties and constructional topics are also treated in various papers. Not only the discussion between the researchers, b u t also the reaction f r o m the engineers in the field, the users, contributes greatly t o the value of the conference. It is also for this reason that papers on the actual behaviour of offshore structures are highly appreciated.

A conference like this can only be a success if papers of a sufficiently high standard are presented. The Scientific Committee had the d i f f i c u l t task to select a number of good papers f r o m a much larger number of abstracts submitted. I t h i n k that, thanks also t o the quality of the papers submitted, they have succeeded very well in their task.

E.W. Bijker

Chairman, Local Organizing Committee

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V I I

PREFACE

In its preparations for the program of Boss '85, the Scientific Committee decided to strive for a sig-nificant amount of contributions dealing w i t h an integrated approach to the description, analysis and modelling of the behaviour of offshore structures. This was indicated in the Call for Papers. Within the central theme of an integrated approach, submission of contributions in the following categories was es-pecially requested:

• Predictions o f overall behaviour during the design stage.

• Analysis of the behaviour of entire structures-as-built, preferably including comparisons of observed behaviour w i t h that predicted mathematically or on the basis of scale models.

• Modelling of the behaviour of degraded and/or damaged structures. The problem of assessment of the reliability of such structures should preferably be addressed also.

• Case histories and analyses of failures of structures (collapse, overturning, capsizing).

Contributions dealing w i t h subsystems or system aspects were also welcome, provided their relation t o the whole was made explicit and clear.

A large number of abstracts were submitted in response t o the Call for Papers. Many of them were of good quality, although the number of abstracts dealing w i t h the topics specifically requested was less than was hoped for,

T o ensure high-quality contributions to the Conference as much as possible, the Scientific Committee adopted a two-stage selection procedure. On the basis of the abstracts received, contributions were either rejected or provisionally accepted. Final acceptance took place (or not) based on a review of the manu-script of the complete paper. The Committee has tried t o obtain a representative cross-section over the field of the Conference.

The majority of the accepted contributions were scheduled for oral presentation in one of three parallel sessions; the others have been designated f o r presentation in posters, t o be on display during the entire Conference. One half afternoon has been reserved exclusively for discussions about the poster papers.

In addition t o the submitted contributions, the Scientific Committee selected five topics for presenta-tion in plenary review lectures by invited speakers. Many thanks are due t o these speakers for accepting the invitation and f o r preparing and presenting their substantial contributions.

Thanks t o the cooperation of the authors, all conference contributions are included in this volume. Invited lectures have been placed first, followed by submitted contributions presented orally, and sub-mitted contributions presented in posters. The sequence and numbering of the papers in the Proceedings have been chosen for convenience in use by Conference participants. There is some degree of ordering of papers per topic, but this is only partial because the Conference was run in three parallel sessions. In closing, a word of thanks is addressed t o all those w h o have contributed t o the success of the Conference either as author of a paper, as speaker or as session chairman.

J . A . Battjes

Chairman, Scientific Committee

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I X CONTENTS COMMITTEES FOREWORD PREFACE 11 V V I V I I 21 53 I I I Case h i s t o r i e s o f s t r u c t u r a l damages - l e s s o n s l e a r n e d

E.M.Q. R«5ren, T. S o l l i e and B. C a r l i n (Norway)

12 The i n f l u e n c e o f s o i l p r o p e r t i e s on t h e b e h a v i o u r o f o f f s h o r e s t r u c t u r e s A. V e r r u l j t (The N e t h e r l a n d s )

13 P l a t f o r m a l t e r n a t i v e s f o r the T r o l l f i e l d C.E. Fay (Norway)

14 Recent d e v e l o p m e n t s i n i c e mechanics and i c e l o a d s K.R. C r o a s d a l e (Canada)

15 The r e l i a b i l i t y concept as an a i d t o d e c i s i o n making I n o f f s h o r e e n g i n e e r i n g /3 M.J. Baker (UK)

A l A u n i f i e d p r o b a b i l i s t i c a p p r o a c h t o p r e d i c t i n g t h e response o f o f f s h o r e 95 s t r u c t u r e s , i n c l u d i n g t h e extreme response

R.B. I n g l i s (USA), J.G.L. P i j f e r s and J.H. Vugts (The N e t h e r l a n d s ) A2 S e r v i c e b e h a v i o u r o f t h e M u r c h i s o n p l a t f o r m

E.R.G. B e l l and J.K. Ward (UK), R. Zimmer (USA)

A3 I n - s e r v i c e r e s p o n s e a n a l y s i s o f two f i x e d o f f s h o r e p l a t f o r m s

J. T h e b a u l t , I . . R o b b e r s t a d , I . Langen (Norway), G. A g n e l l o , Y. Doucet and R. N e r z i c ( F r a n c e )

A4 E v a l u a t i o n o f e x p e r i e n c e s f r o m t h r e e l a r g e - s i z e t e s t s i n t h e N o r t h Sea w i t h i n t h e d e s i g n p r o c e d u r e o f o f f s h o r e s t r u c t u r e s

K. K o k k i n o w r a c h o s , J . H o e f e l d and A. M i t z l a f f (FRG)

A5 P r e d i c t e d and measured l o n g terra s t r e s s range d i s t r i b u t i o n s f o r t h e Fulmar A p l a t f o r m

R.B. I n g l i s (USA) and T.E. K i n t (The N e t h e r l a n d s )

A6 F a t i g u e and dynamic a n a l y s i s o f moored o f f s h o r e s t r u c t u r e s . Comparison l b / w i t h e x i s t i n g r e g u l a t i o n s

S.A. L«Stveit and T. Wangensten (Norway)

A7 Comparison between measured and c a l c u l a t e d b e h a v i o u r o f a moored s e m i - s u b m e r s i b l e p l a t f o r m

M. Mjirch and T. Moan (Norway)

A8 F l o a t i n g s t a b i l i t y and s e a w o r t h i n e s s - t r e n d s and development iö' M. M»5rland, J . W i b o r g , S.A. L i i t v e i t and M. S i g u r d s e n (Norway)

A9 M o d e l l i n g o f t h e dynamic b e h a v i o u r o f damaged p l a t f o r m s by t i m e s i m u l a t i o n methods and model t e s t s

A. Naess, J.R. H o f f and K. H e r f j o r d (Norway) AlO S t a b i l i t y o f damaged p l a t f o r m s i n waves

P.O. Moncarz, J.R. P a u l l i n g , R.K. T a y l o r and J.M. Thomas (USA)

A l l The l o a d i n g o n a c y l i n d e r i n p o s t - c r i t i c a l f l o w b e n e a t h p e r i o d i c and 213 random waves

P.W. Bearman, J.R. C h a p l i n and J.M.R. Graham (UK), J.K. Kostense (The N e t h e r l a n d s ) , P.F. H a l l (UK) and G. Klopman (The N e t h e r l a n d s )

A12 N u m e r i c a l s i m u l a t i o n o f f l o w around c i r c u l a r c y l i n d e r s a t h i g h Reynolds 227 numbers

J.J.W. v a n d e r Vegt and W.C. de Boom (The N e t h e r l a n d s )

A13 A n o n - l i n e a r , f r e q u e n c y domain d e s c r i p t i o n o f wave f o r c e s on an element o f a v e r t i c a l p i l e i n random seas

J.H. Vugts (The N e t h e r l a n d s ) and A.G, Bouquet (Norway) A U C o l l a p s e b e h a v i o u r o f t r u s s w o r k s t e e l p l a t f o r m s

T. Moan, J . Amdahl, A.G. Engseth and T. G r a n l i (Norway) A15 P a r a m e t r i c resonance o f C.A.L.M. buoy m o t i o n s i n r e g u l a r waves

J.M. C h a n t r e l and Ch. B e r h a u l t ( F r a n c e )

A16 Slow d r i f t m o t i o n s o f a f l o a t i n g body i n narrow-banded seas Y. Agnon and C C . Mei (USA)

175 195 205 239 255 269 281

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X

- A17 N o n l i n e a r hydrodynatnic i n t e r a c t i o n i n o f f s h o r e l o a d i n g systems 293

T. M a r t h i n s e n and T. V i n j e (Norway) A18 R e v i s i o n o f f a t i g u e l i f e c a l c u l a t i o n s and a s s o c i a t e d u n c e r t a i n t i e s i n 303 the l i g h t o f i n s e r v i c e d a t a J . Wolfram (UK) A19 M e t h o d o l o g i e s f o r l i m i t s t a t e r e l i a b i l i t y a n a l y s i s o f o f f s h o r e j a c k e t 315 p l a t f o r m s

G.E, Edwards, A. H e i d w e i l l e r , J . K e r s t e n s and A. Vrouwenvelder (The N e t h e r l a n d s )

B I A j a c k e t l a u n c h computer program compared w i t h two f u l l - s c a l e l a u n c h e s 325

C. Aage (Denmark), P.E. C h r i s t i a n s e n (UK) and J , M($ller (Denmark)

B2 The v a l i d i t y o f q u a s i - s t a t i c and a p p r o x i m a t e f o r m u l a e i n t h e c o n t e x t o f 337 c a b l e and f l e x i b l e r i s e r dynamics A.T. R a c t l i f f e (UK) B3 Response o f anchor l i n e s t o e x c i t a t i o n a t t h e t o p 347 S.H. P o l d e r d i j k (The N e t h e r l a n d s ) BA Dynamic b e h a v i o u r o f m o o r i n g l i n e s 359

H.J.J, van den Boom (The N e t h e r l a n d s )

B5 Forces on s t r u c t u r e s due t o deepwater b r e a k i n g waves 369

W.J. Easson and C A . C r e a t e d (UK)

- B6 Dynamic b e h a v i o r o f f l e x i b l e r i s e r 375

Ch. B r a t u and P. N a r z u l ( F r a n c e )

B7 A comparison o f l i n e a r and n o n l i n e a r methods f o r dynamic a n a l y s i s o f 383

marine r i s e r s

B.J. L e i r a and S.N. Remseth (Norway)

BB C o l l a p s e and r e s i d u a l s t r e n g t h o f damaged t u b u l a r members 395

J . Taby and T. Moan (Norway)

B9 E v a l u a t i o n o f w e l d r e p a i r o f d e n t e d members 409

J.L. Grover and G.R. Egan (USA)

BIO Damage o f o r t h o g o n a l l y s t i f f e n e d s h e l l s 419

B.F. Ronalds and P.J. D o w l i n g (UK)

B H S t r e s s c o n c e n t r a t i o n s i n T/Y and g a p / o v e r l a p K - j o i t i t s 429

M. E f t h y m i o u and S. D u r k i n (The N e t h e r l a n d s )

B12 E x p e r i m e n t a l r e s e a r c h on t u b u l a r T - j o i n t s u n d e r p r o p o r t i o n a l l y a p p l i e d 441 combined s t a t i c l o a d i n g

H.G.A. S t o l . R.S. P u t h l i and F.S.K. B i j l a a r d (The N e t h e r l a n d s )

B13 F r a c t u r e mechanics assessment o f f a t i g u e l i f e o f welded p l a t e T - j o i n t s , 453

i n c l u d i n g t h i c k n e s s e f f e c t

0. V o s i k o v s k y , R. B e l l , D.J. Burns and U.H. Mohaupt (Canada)

B14 S t r e s s c o n c e n t r a t i o n s i n c a s t c o r n e r j o i n t s o f t u b u l a r s t r u c t u r e s 465

C D . Edwards and H. F e s s l e r (UK)

B15 Creep o f c o n c r e t e i n seawater 475

J.P.G. M i j n s b e r g e n and H.W. R e i n h a r d t (The N e t h e r l a n d s )

B16 P l a i n c o n c r e t e under s u s t a i n e d t e n s i l e o r t e n s i l e and c o m p r e s s i v e 487

f a t i q u e l o a d i n g s

H.A.W. C o r n e l l s s e n and A.J.M. Slemes (The N e t h e r l a n d s )

B17 F a t i q u e i n p r e s t r e s s e d c o n c r e t e f o r m a r i n e a p p l i c a t i o n s 499

U.K. B a n e r j e e ( A u s t r a l i a ) , T. H o d g k i e s s and P.D. A r t h u r (UK)

B18 Under w a t e r i n s p e c t i o n o f c o n c r e t e s t r u c t u r e s 513

J . I . de Lange, K. V e r h u i s t and R. Breeuwer (The N e t h e r l a n d s )

B19 Under w a t e r r e p a i r s w i t h cement based c o n c r e t e s 523

P.D. S t e i j a e r t and J . F . de Kreuk (The N e t h e r l a n d s )

Cl A n e w - g e n e r a t i o n o f p a n e l programs f o r r a d i a t i o n - d i f f r a c t i o n p r o b l e m s 531

S.R. B r e i t , J.N. Newman and P.D. Sclavounos (USA)

C2 The development o f hydrodynamic a n a l y s e s f o r a r t i c u l a t e d column-based 545

f l o a t i n g p r o d u c t i o n systems

D.P. Snowden, J.G. Warren and M.R.C Bury (UK)

C3 I n t e r d e p e n d e n c e between dynamic surge n o t i o n s o f p l a t f o r m and t e t h e r s 557

f o r a deep w a t e r TLP

£. S l m i u and A. Carasso (USA)

C4 On improvements t o t h e d e s i g n o f t e n s i o n e d buoyant p l a t f o r m s 563

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589 601 633 643 673 685 X I C5 S t a t i c and c y c l i c l o a d t e s t s on a d r i l l e d and g r o u t e d p i l e i n c a l c a r e o u s 577 sand J.F. Nauroy, F. B r u c y and P. Le T l r a n t ( F r a n c e ) C6 B e h a v i o u r o f p i l e s i n c l a y under c y c l i c a x i a l l o a d i n g - r e s u l t s o f f i e l d model t e s t s

K. K a r l s r u d and T. Haugen (Norway)

C7 A c c u r a c y and r e l i a b i l i t y o f dynamic p i l e t e s t i n g t e c h n i q u e s P. Middendorp and C. v a n Z a n d w i j k (The N e t h e r l a n d s )

C8 A s s e s s i n g t h e s a f e t y o f o f f s h o r e p i l e s by d i s p l a c e m e n t m o n i t o r i n g 611 R.J. J a r d i n e , D.M. P o t t s , D.W. H i g h t and J.B. B u r l a n d (UK)

C9 A p p l i c a t i o n o f m o n i t o r i n g systems d u r i n g p i l e d r i v i n g i n N o r t h Sea sands 623 M, V i s s e r , G.L. v a n d e r Zwaag and D.J.H.M. P l u l m g r a a f f (The N e t h e r l a n d s )

CIO P i l e d r i v i n g performance a t t h e I w a k l s i t e R.D. Raines and J.D. M u r f f (USA)

C H A method t o e v a l u a t e t h e g e o t e c h n l c a l s t a b i l i t y o f o f f - s h o r e s t r u c t u r e s founded on a l o o s e l y packed seabed sand I n a wave l o a d i n g e n v i r o n m e n t F.B.J. Barends and E.O.F. C a l l e (The N e t h e r l a n d s )

C12 Seismic response o f g r a v i t y s t r u c t u r e s w i t h s o i l i n t e r a c t i o n 653 S.F. Pawsey, W.C. Knudson and S. Vahdani (USA), G.F. Bach (Norway)

C13 A n u m e r i c a l s t u d y o f t h e f o u n d a t i o n b e h a v i o u r o f a proposed N o r t h Sea 665 g r a v i t y p l a t f o r m

D.M. P o t t s and D. K i n d l e (UK)

C14 Wave l o a d i n g on a c o n i c a l g r a v i t y p l a t f o r m

W.W. Jamleson, E.P.D. Mansard and G.R. Mogridge (Canada)

C15 C a l c u l a t i o n o f g l o b a l i c e f o r c e f r o m w a l l - m o u n t e d p r e s s u r e sensors P.E. Myers (USA)

C16 A r e v i e w o f i n t e r a c t i o n o f i c e b e r g s w i t h o f f s h o r e s t r u c t u r e s 693 V.M. Arunachalam, W. Bobby, D.B. Muggeridge and R.A. Stacey (Canada)

G17 Towards an a c t u a l p r o b a b i l i s t i c approach i n p r e d i c t i n g o f f s h o r e 705 s t r u c t u r e s b e h a v i o u r i n a r c t i c r e g i o n s

L.C. Zaleski-Zamenhof ( F r a n c e ) and M. Rojansky (USA)

C18 The n a t u r a l s e l f - b u r i a l o f submarine p i p e l i n e s 717 W. L e e u w e s t e i n . E.W. B i j k e r , E.B. P e e r b o l t e and E.G. Wind

(The N e t h e r l a n d s )

C19 S t a t i c s and dynamics o f p i p e l i n e spans 729 P.J.M. L a p i d a i r e (The N e t h e r l a n d s )

Pi Second o r d e r wave l o a d i n g on s u r f a c e p i e r c i n g c y l i n d e r s 739 D.M. E l l l x and K, Arumugam (UK)

P2 Wave f o r c e s on m u l t i p l e l e g p l a t f o r m s 751 H. Kagemoto and D.K.P. Yue (USA)

P3 Long-term p r o b a b i l i t y d i s t r i b u t i o n s and f a t i q u e damage f o r M o r i s o n - t y p e 763 wave l o a d i n g

P.H.J. Verbeek and J.J.H. Brouwers ( U K )

P4 V i s c o u s a n a l y s i s o f submarine f l o w s 773 L. Edgers (USA) and K. K a r l s r u d (Norway)

P5 A p p l i c a t i o n t o d e s i g n o f m a r i n e f o u n d a t i o n s o f a c o m p l e t e model f o r 785 c y c l i c b e h a v i o u r o f s o i l s Y. Meimon and F. L a s s o u d i e r e ( F r a n c e ) P6 G e o t e c h n l c a l a s p e c t s o f submarine p i p e l i n e s 797 S.E.J. S p i e r e n b u r g (The N e t h e r l a n d s ) P7 Anchor c h a i n c a b l e s o f f s h o r e . S t r e n g t h and r e l i a b i l i t y 807 J. L e r e i m (Norway) P8 The e l a s t i c - p l a s t i c f i n i t e element a n a l y s i s o f t u b u l a r j o i n t s o f 813 o f f s h o r e d r i l l i n g p l a t f o r m s

T.-Y. Chen and S.-Y. Wu (P.R. o f China)

P9 S t r u c t u r a l c h a r a c t e r i s t i c s o f o v e r l a p p e d nodes 823 K. Nakamura, H. Sada, T. Shinke and B. An (Japan)

PIO The e x p e r i m e n t a l b e h a v i o u r o f g r o u t e d c o n n e c t i o n s f o r c o n s t r u c t i o n and 835 r e p a i r

L.F. B o s w e l l and C. D'Mello (UK)

P I I Endochronic c o n s t i t u t i v e m o d e l i n g o f m a r i n e f i b e r r e i n f o r c e d c o n c r e t e 845 and f r o z e n s o i l

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X I I ?12 P13 P14 P15 P16 P17 PI8 P19 P20 P21 P22 P23 P24 P25 C o r r o s i o n a s p e c t s o f s t e e l i n c o n c r e t e o f f shore s t r u c t u r e s J . J . E b e r w i j n and C D . de Waal (The N e t h e r l a n d s )

S t e e l f i b r e r e i n f o r c e d c o n c r e t e f o r m a r i n e a p p l i c a t i o n s P.S. Mangat and K. Gurusamy (UK)

I n t e r a c t i o n o f crude o i l and c o n c r e t e i n o f f s h o r e o i l s t o r a g e t a n k s P.J.E. S u l l i v a n , O.A. Onabolu and G.A. Khoury (UK)

Fender l a y e r p r o t e c t i o n o f s u b - s u r f a c e c o n c r e t e c a i s s o n s S.H. P e r r y and G. D i n i c (UK) Q u a s i - s t a t i c response o f j a c k e t p l a t f o r m s s u b j e c t t o n o n - l i n e a r wave l o a d i n g R.L. Bruce (UK) V i b r a t i o n c o n t r o l o f a t o w e r - l i k e s t r u c t u r e i n t h e sea T. Shimogo and H. Tohma (Japan)

Damping o f f i x e d o f f s h o r e p l a t f o r m s N. Spids<5e and I . Langen (Norway)

New a s e i s m i c d e s i g n o f c o n c r e t e p l a t f o r m s u b j e c t e d t o s t r o n g e a r t h q u a k e m o t i o n

H. Yamamoto, K. H o r l k o s h i , T. Kimura and S. H i r a s h l m a (Japan) S o i l - s t r u c t u r e i n t e r a c t i o n i n t h e dynamic response o f an o f f s h o r e s t r u c t u r e

J.G.A. Munro, C J . Cudworth and A.A. Rodger (UK)

Response o f o f f s h o r e s t r u c t u r e s t o b e r g y - b i t and i c e b e r g i m p a c t s M. Arockiasamy, A.S.J, Swamidas and H. El-Tahan (Canada)

N o n l i n e a r c a b l e dynamics

A. B l i e k and M.S. T r i a n t a f y l l o u (USA)

D e s i g n c o n s i d e r a t i o n s and b e h a v i o u r o f moored o f f s h o r e v e s s e l s F.A. Ramzan and N.D. M i t c h e l l (UK)

The a n a l y s e s o f t h e dynamic b e h a v i o u r o f t h e E a s t e r n S c h e l d t s t o r m surge b a r r i e r c o n s t r u c t i o n v e s s e l s w i t h m a t h e m a t i c a l models

A. van d e r Made, J . de Jong and L.D. Boom (The N e t h e r l a n d s ) On t h e p r a c t i c a l e v a l u a t i o n o f hydrodynamic c o e f f i c i e n t s o f s e m i s u b m e r s i b l e p l a t f o r m s , based on s y s t e m a t i c model t e s t s R. K i s h e v ( B u l g a r i a ) , A. I v a n o v and L. Pomeranetz (USSR) AUTHOR INDEX 857 867 881 889 899 907 915 927 939 951 963 973 985 999 1011

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