CAN CSA-ISO 19901-4-2006 Petroleum and natural gas industries Specific requirements for offshore structures Part 4 Geotechnical and foundation design considerations.pdf

1、 Reference numberISO 19901-4:2003(E)ISO 2003Petroleum and natural gas industries Specific requirements for offshore structures Part 4: Geotechnical and foundation design considerations Industries du ptrole et du gaz naturel Exigences spcifiques relatives aux structures en mer Partie 4: Bases concept

2、uelles des fondations National Standard of CanadaCAN/CSA-ISO 19901-4:06(ISO 19901-4:2003)International Standard ISO 19901-4:2003 (first edition, 2003-08-01) has been adopted withoutmodification (IDT) as CSA Standard CAN/CSA-ISO 19901-4:06, which has been approved as a NationalStandard of Canada by t

3、he Standards Council of Canada.ISBN 1-55436-212-1 April 2006The Canadian Standards Association (CSA),under whose auspices this National Standard has been produced, was chartered in 1919 and accredited by the Standards Council of Canada to the National Standards system in 1973. It is a not-for-profit

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18、our le moment. La CSA publiera la version enfranais ds quelle sera produite par lorganisme rdacteur.CAN/CSA-ISO 19901-4:06Petroleum and natural gas industries Specificrequirements for offshore structures Part 4:Geotechnical and foundation design considerationsApril 2006 Canadian Standards Associatio

19、n CSA/1CAN/CSA-ISO 19901-4:06Petroleum and natural gas industries Specific requirements for offshore structures Part 4: Geotechnical and foundation design considerationsCSA PrefaceThis is the first edition of CAN/CSA-ISO 19901-4, Petroleum and natural gas industries Specific requirements for offshor

20、e structures Part 4: Geotechnical and foundation design considerations, which is an adoption without modification of the identically titled ISO (International Organization for Standardization) Standard 19901-4 (first edition, 2003-08-01). At the time of publication, ISO 19901-4:2003 is available fro

21、m ISO in English only. CSA will publish the French version when it becomes available from ISO.This Standard specifies that the resistance of foundations be computed by applying a material factor to the soil strength. This differs from the practice in Canada, described in CAN/CSA-S472-04, Foundations

22、 (and ISO/DIS 19902, Petroleum and natural gas industries Fixed steel offshore structures), where a resistance factor is applied to the foundation capacity. Both approaches are used within limit states design and accepted in different parts of the world, but experience with design codes in Canada (i

23、n which both approaches have been tried and tested) has resulted in adoption of the resistance factor approach in general practice. The foundation engineering experience base in Canada, which provides the basis for design codes, is therefore overwhelmingly based on resistance factors. Designers are

24、encouraged to use the existing method based on resistance factors, or the alternative method based on material factors, using sound engineering judgment, precedent, and their own experience, as well as relevant industry experience and due diligence to determine which method is more suitable to a par

25、ticular application.Standards development within the Canadian Offshore Structures sector is harmonized with international standards development. This Standard was reviewed for Canadian adoption by the harmonized Canadian Advisory Committee and the CSA Technical Committee to ISO/TC 67/SC 7, Offshore

26、Structures. This Standard has been formally approved by the CSA Technical Committee on Design, Construction, and Installation of Offshore Structures under the jurisdiction of the Strategic Steering Committee on Offshore Structures. A list of the members of the Technical Committee is available upon r

27、equest. This Standard has been approved as a National Standard of Canada by the Standards Council of Canada.April 2006 Canadian Standards Association 2006All rights reserved. No part of this publication may be reproduced in any form whatsoever without the prior permission ofthe publisher. ISO materi

28、al is reprinted with permission. Where the words “this International Standard” appear in the text, they should be interpreted as “this National Standard of Canada”.Inquiries regarding this National Standard of Canada should be addressed toCanadian Standards Association5060 Spectrum Way, Suite 100, M

29、ississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044www.csa.caBlank pageReference numberISO 19901-4:2003(E)ISO 2003STANDARD ISO19901-4First edition2003-08-01Petroleum and natural gas industries Specific requirements for offshore structures Part 4: Geotechnical and foundation design conside

30、rations Industries du ptrole et du gaz naturel Exigences spcifiques relatives aux structures en mer Partie 4: Bases conceptuelles des fondations ISO 19901-4:2003(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or vi

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33、 for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2003 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any mea

34、ns, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyr

35、ightiso.org Web www.iso.org ii ISO 2003 All rights reservedISO 19901-4:2003(E) ISO 2003 All rights reserved iiiContents Page Foreword. v Introduction vii 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 2 4 Symbols . 3 5 General requirements . 4 5.1 General. 4 5.2 Testing and instrument

36、ation 4 5.3 Conductor installation and shallow well drilling . 5 6 Geotechnical data acquisition and integrated geoscience studies. 5 6.1 Geotechnical assessment 5 6.2 Shallow geophysical investigation . 5 6.3 Geological modelling and identification of hazards6 6.4 Geotechnical investigation 8 7 Sta

37、bility of shallow foundations 9 7.1 General. 9 7.2 Principles . 10 7.3 Acceptance criteria . 10 7.4 Undrained bearing capacity constant shear strength 12 7.5 Undrained bearing capacity linearly increasing shear strength . 13 7.6 Drained bearing capacity . 13 7.7 Shear strength used in bearing capaci

38、ty calculations 14 7.8 Settlements and displacements 14 7.9 Dynamic behaviour . 14 7.10 Hydraulic stability . 15 7.11 Installation and removal. 15 7.12 Shallow foundations equipped with skirts. 15 7.13 Shallow foundations without skirts 15 7.14 Installation effects. 16 Annex A (informative) Addition

39、al information and guidance. 17 A.1 Scope 17 A.2 Normative references . 17 A.3 Terms and definitions. 17 A.4 Symboles . 17 A.5 General requirements . 17 A.6 Geotechnical data acquisition and integrated geoscience studies. 18 A.6.1 Geotechnical assessment 18 A.6.2 Shallow geophysical investigation .

40、18 A.6.3 Geological modelling and identification of hazards18 A.6.4 Geotechnical investigation 18 A.7 Stability of shallow foundations 20 A.7.1 General. 20 A.7.2 Principles . 20 A.7.3 Acceptance criteria . 22 A.7.4 Undrained bearing capacity constant shear strength 22 A.7.5 Undrained bearing capacit

41、y linearly increasing shear strength . 23 A.7.6 Drained bearing capacity . 25 ISO 19901-4:2003(E) iv ISO 2003 All rights reservedA.7.7 Shear strength used in bearing capacity calculations26 A.7.8 Settlements and displacements.26 A.7.9 Dynamic behaviour .26 A.7.10 Hydraulic stability26 A.7.11 Install

42、ation and removal .26 A.7.12 Shallow foundations equipped with skirts .26 A.7.13 Shallow foundations without skirts.27 A.7.14 Installation effects.27 Annex B (informative) Carbonate soils.28 B.1 General .28 B.2 Characteristic features .28 B.3 Properties.29 B.4 Foundations.29 B.4.1 Driven piles 29 B.

43、4.2 Other deep foundation alternatives.29 B.4.3 Shallow foundations .29 B.5 Assessment .30 Bibliography31 ISO 19901-4:2003(E) ISO 2003 All rights reserved vForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). Th

44、e work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-gov

45、ernmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

46、The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vo

47、te. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 19901-4 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore stru

48、ctures for petroleum, petrochemical and natural gas industries, Subcommittee SC 7, Offshore structures. ISO 19901 consists of the following parts, under the general title Petroleum and natural gas industries Specific requirements for offshore structures: Part 4: Geotechnical and foundation design co

49、nsiderations Part 5: Weight control during engineering and construction The following parts of ISO 19901 are under preparation: Part 1: Metocean design and operating considerations Part 2: Seismic design procedures and criteria Part 3: Topsides structure Part 6: Marine operations Part 7: Stationkeeping systems for floating offshore structures and mobile offshore units ISO 19901 is one of a series of standards for offshore structures. The full series consists of the following International Sta