1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Petroleum and natural gas industries Specific requirements for offshore structuresPart 2: Seismic design procedures and criteria (ISO 19901-2:2017)BS EN ISO 19901-2:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
2、EN ISO 19901-2 December 2017 ICS 75.180.10 Supersedes EN ISO 19901-2:2004English Version Petroleum and natural gas industries - Specific requirements for offshore structures - Part 2: Seismic design procedures and criteria (ISO 19901-2:2017) Industries du ptrole et du gaz naturel - Exigences spcifiq
3、ues relatives aux structures en mer - Partie 2: Procdures de conception et critres sismiques (ISO 19901-2:2017) Erdl- und Erdgasindustrie - Spezielle Anforderungen fr Offshore-Anlagen - Teil 2: Seismische Auslegungsverfahren und -kriterien (ISO 19901-2:2017) This European Standard was approved by CE
4、N on 18 November 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standar
5、ds may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and noti
6、fied to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Ic
7、eland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CEN
8、ELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19901-2:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 199012:2017. It is ident
9、ical to ISO 199012:2017. It supersedes BS EN ISO 199012:2004, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/525/12, Design of offshore structures.A list of organizations represented on this committee can be obtained on request to its secretary.This
10、 publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 90627 5ICS 75.180.20; 75.180.10Compliance with a British Standard canno
11、t confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 199012:2017EUROPEAN STANDARD NORME EUROPENNE EU
12、ROPISCHE NORM EN ISO 19901-2 December 2017 ICS 75.180.10 Supersedes EN ISO 19901-2:2004English Version Petroleum and natural gas industries - Specific requirements for offshore structures - Part 2: Seismic design procedures and criteria (ISO 19901-2:2017) Industries du ptrole et du gaz naturel - Exi
13、gences spcifiques relatives aux structures en mer - Partie 2: Procdures de conception et critres sismiques (ISO 19901-2:2017) Erdl- und Erdgasindustrie - Spezielle Anforderungen fr Offshore-Anlagen - Teil 2: Seismische Auslegungsverfahren und -kriterien (ISO 19901-2:2017) This European Standard was
14、approved by CEN on 18 November 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such na
15、tional standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own lan
16、guage and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greec
17、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR N
18、ORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19901-2:2017 EBS EN ISO 199012:2017EN ISO 19901-2:2017 (E) 3 European foreword This document (EN I
19、SO 19901-2:2017) has been prepared by Technical Committee ISO/TC 67 “Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries“ in collaboration with Technical Committee CEN/TC 12 “Materials, equipment and offshore structures for petroleum, petrochemical an
20、d natural gas industries” the secretariat of which is held by CYS. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2018, and conflicting national standards shall be withdrawn at the latest by
21、 June 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 19901-2:2004. According to the CEN-CENELEC Internal Regul
22、ations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, It
23、aly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 19901-2:2017 has been approved by CEN as EN ISO 19901-2:2017 without any modification.
24、BS EN ISO 199012:2017ISO 19901-2:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Symbols and abbreviated terms . 54.1 Symbols . 54.2 Abbreviated terms . 65 Earthquake hazards 76 Seismic design principles and methodology . 76.1 Design principles . 76.2
25、Seismic design procedures . 86.2.1 General 86.2.2 Extreme level earthquake design 96.2.3 Abnormal level earthquake design .106.3 Spectral acceleration data 116.4 Seismic risk category 116.5 Seismic design requirements. 126.6 Site investigation 137 Simplified seismic action procedure 137.1 Soil class
26、ification and spectral shape . 137.2 Seismic action procedure 178 Detailed seismic action procedure .188.1 Site-specific seismic hazard assessment . 188.2 Probabilistic seismic hazard analysis . 188.3 Deterministic seismic hazard analysis 198.4 Seismic action procedure 218.5 Local site response anal
27、yses 249 Performance requirements 249.1 ELE performance 249.2 ALE performance . 25Annex A (informative) Additional information and guidance 26Annex B (informative) Simplified action procedure spectral accelerations 35Annex C (informative) Regional information .46Bibliography .50 ISO 2017 All rights
28、reserved iiiContents PageBS EN ISO 199012:2017ISO 19901-2:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical co
29、mmittees. 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-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with th
30、e International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for t
31、he different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. I
32、SO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this docu
33、ment is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Or
34、ganization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC
35、 7, Offshore structures.This second edition cancels and replaces the first edition (ISO 19901-2:2004), which has been technically revised.A list of all parts in the ISO 19901 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 199012:2017ISO 19901-2:2017(E)IntroductionThe
36、 series of International Standards applicable to types of offshore structure, ISO 19900 to ISO 19906, addresses design requirements and assessments of all offshore structures used by the petroleum and natural gas industries worldwide. Through their application, the intention is to achieve reliabilit
37、y levels appropriate for manned and unmanned offshore structures, whatever the type of structure and the nature or combination of the materials used.It is important to recognize that structural integrity is an overall concept comprising models for describing actions, structural analyses, design or a
38、ssessment rules, safety elements, workmanship, quality control procedures and national requirements, all of which are mutually dependent. The modification of one aspect of design or assessment in isolation can disturb the balance of reliability inherent in the overall concept or structural system. T
39、he implications involved in modifications, therefore, need to be considered in relation to the overall reliability of all offshore structural systems.The series of International Standards applicable to the various types of offshore structure is intended to provide a wide latitude in the choice of st
40、ructural configurations, materials and techniques without hindering innovation. Sound engineering judgement is, therefore, necessary in the use of these International Standards.The overall concept of structural integrity is described above. Some additional considerations apply for seismic design. Th
41、ese include the magnitude and probability of seismic events, the use and importance of the offshore structure, the robustness of the structure under consideration and the allowable damage due to seismic actions with different probabilities. All of these, and any other relevant information, need to b
42、e considered in relation to the overall reliability of the structure.Seismic conditions vary widely around the world, and the design criteria depend primarily on observations of historical seismic events together with consideration of seismotectonics. In many cases, site-specific seismic hazard asse
43、ssments will be required to complete the design or assessment of a structure.This document is intended to provide general seismic design procedures for different types of offshore structures, and a framework for the derivation of seismic design criteria. Further requirements are contained within the
44、 general requirements standard, ISO 19900, and within the structure-specific standards, ISO 19902, ISO 19903, ISO 19904 and ISO 19906. The consideration of seismic events in connection with mobile offshore units is addressed in ISO 19905.Some background to and guidance on the use of this document is
45、 provided in Annex A. The clause numbering in Annex A is the same as in the normative text to facilitate cross-referencing.Regional information on expected seismic accelerations for offshore areas is provided in Annex B. ISO 2017 All rights reserved vBS EN ISO 199012:2017Petroleum and natural gas in
46、dustries Specific requirements for offshore structures Part 2: Seismic design procedures and criteria1 ScopeThis document contains requirements for defining the seismic design procedures and criteria for offshore structures; guidance on the requirements is included in Annex A. The requirements focus
47、 on fixed steel offshore structures and fixed concrete offshore structures. The effects of seismic events on floating structures and partially buoyant structures are briefly discussed. The site-specific assessment of jack-ups in elevated condition is only covered in this document to the extent that
48、the requirements are applicable.Only earthquake-induced ground motions are addressed in detail. Other geologically induced hazards such as liquefaction, slope instability, faults, tsunamis, mud volcanoes and shock waves are mentioned and briefly discussed.The requirements are intended to reduce risk
49、s to persons, the environment, and assets to the lowest levels that are reasonably practicable. This intent is achieved by using:a) seismic design procedures which are dependent on the exposure level of the offshore structure and the expected intensity of seismic events;b) a two-level seismic design check in which the structure is designed to the ultimate limit state (ULS) for strength and stiffness and then checked to abnormal environmental events or the abnormal limit state (ALS) to ensure that it meets reserve strength and energy dissi
