1、BRITISH STANDARD BS EN ISO 19901-2:2004 Petroleum and natural gas industries Specific requirements for offshore structures Part 2: Seismic design procedures and criteria The European Standard EN ISO 19901-2:2004 has the status of a British Standard ICS 75.180.20 BS EN ISO 19901-2:2004 This British S
2、tandard was published under the authority of the Standards Policy and Strategy Committee on 7 April 2005 BSI 7 April 2005 ISBN 0 580 45739 7 National foreword This British Standard is the official English language version of EN ISO 19901-2:2004. It is identical with ISO 19901-2:2004. The UK particip
3、ation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/12, Offshore structures, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-
4、references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of Br
5、itish Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; pres
6、ent to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an
7、inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to vi, pages 1 to 46, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.
8、 Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO199012 November2004 ICS75.180.20 Englishversion PetroleumandnaturalgasindustriesSpecificrequirementsfor offshorestructuresPart2:Seismicdesignproceduresand criteria(ISO199012:2004) IndustriesduptroleetdugaznaturelExigences spcifiquesre
9、lativesauxstructuresenmerPartie2: Procduresdeconceptionetcritressismiques(ISO 199012:2004) ThisEuropeanStandardwasapprovedbyCENon4November2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithout
10、anyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCE
11、NmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands
12、,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforC
13、ENnationalMembers. Ref.No.ENISO199012:2004:E I NESO 91-109:2002( 4E) 2 Foreword This document (EN ISO 19901-2:2004) has been prepared by Technical Committee ISO/TC 67 “Materials, equipment and offshore structures for petroleum and natural gas industries“ in collaboration with Technical Committee CEN
14、/TC 12 “Materials, equipment and offshore structures for petroleum and natural gas industries“, the secretariat of which is held by AFNOR. 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 May 2005,
15、 and conflicting national standards shall be withdrawn at the latest by May 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Eston
16、ia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 19901-2:2004 has been approved by CEN as EN ISO 1
17、9901-2:2004 without any modifications. ENISO199012:2004 Reference number ISO 19901-2:2004(E) OSI 4002INTERNATIONAL STANDARD ISO 19901-2 First edition 2004-11-15 Petroleum and natural gas industries Specific requirements for offshore structures Part 2: Seismic design procedures and criteria Industrie
18、s du ptrole et du gaz naturel Exigences spcifiques relatives aux structures en mer Partie 2: Procdures de conception et critres sismiques ENISO199012:2004IS-10991 O2:(4002E) DPlcsid Fremia ihTs PDF file may ctnoian emdebt dedyfepcaes. In ccaocnadrw eith Aebods licensilop gnic,y this file mairp eb yn
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22、a ybm ynae,s lecetrinoc ro mecinahcal, inclidung tohpcoiypodna gn micrfoilm, wittuoh repmissii non writign from ietI rehSa Ot tsserdda eh ebolw or ISOs memreb i ydobn the cnuotrfo y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E
23、-mail coirypthgiso.o gr We bwww.is.o gro Pulbisdehi n Switlrez dnaii ISO 4002 Allr ithgsr esedevrENISO199012:2004IS-10991 O2:(4002E) I SO 4002 All irthgs ersedevr iiiContents Page Foreword iv Introduction . vi 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 2 4 Symbols and abbreviated
24、terms 4 4.1 Symbols . 4 4.2 Abbreviated terms. 6 5 Earthquake hazards 6 6 Seismic design principles and methodology. 7 6.1 Design principles 7 6.2 Seismic design procedures . 7 6.3 Spectral acceleration data 10 6.4 Seismic risk category . 11 6.5 Seismic design requirements 12 7 Simplified seismic ac
25、tion procedure 12 7.1 Soil classification and spectral shape 12 7.2 Seismic action procedure 16 8 Detailed seismic action procedure 16 8.1 Site-specific seismic hazard assessment 16 8.2 Probabilistic seismic hazard analysis 17 8.3 Deterministic seismic hazard analysis . 17 8.4 Seismic action procedu
26、re 19 8.5 Local site response analyses 21 9 Performance requirements 22 9.1 ELE performance 22 9.2 ALE performance 22 Annex A (informative) Additional information and guidance. 23 Annex B (informative) Regional information . 32 Bibliography . 45 ENISO199012:2004IS-10991 O2:(4002E) iv I SO 4002 All i
27、rthgs ersedevrForeword ISO (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 committees. Each member body interested in a subject
28、 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 the International Electrotechnical Commission (IEC)
29、on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees
30、 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 vote. 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 hel
31、d responsible for identifying any or all such patent rights. ISO 19901-2 was prepared by Technical Committee ISO/TC 67, Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, Subcommittee SC 7, Offshore structures. ISO 19901 consists of the following pa
32、rts, under the general title Petroleum and natural gas industries Specific requirements for offshore structures: Part 1: Metocean design and operating considerations Part 2: Seismic design procedures and criteria Part 4: Geotechnical and foundation design considerations Part 5: Weight control during
33、 engineering and construction Part 7: Stationkeeping systems for floating offshore structures and mobile offshore units The following parts of ISO 19901 are under preparation: Part 3: Topsides structure Part 6: Marine operations ISO 19901 is one of a series of standards for offshore structures. The
34、full series consists of the following International Standards. ISO 19900, Petroleum and natural gas industries General requirements for offshore structures ISO 19901 (all parts), Petroleum and natural gas industries Specific requirements for offshore structures ISO 19902, Petroleum and natural gas i
35、ndustries Fixed steel offshore structures ISO 19903, Petroleum and natural gas industries Fixed concrete offshore structures ISO 19904-1, Petroleum and natural gas industries Floating offshore structures Part 1: Monohulls, semi-submersibles and spars ENISO199012:2004IS-10991 O2:(4002E) I SO 4002 All
36、 irthgs ersedevr v ISO 19904-2, Petroleum and natural gas industries Floating offshore structures Part 2: Tension leg platforms ISO 19905-1, Petroleum and natural gas industries Site-specific assessment of mobile offshore units Part 1: Jack-ups ISO/TR 19905-2, Petroleum and natural gas industries Si
37、te-specific assessment of mobile offshore units Part 2: Jack-ups commentary ISO 19906, Petroleum and natural gas industries Arctic offshore structures ENISO199012:2004IS-10991 O2:(4002E) vi I SO 4002 All irthgs ersedevrIntroduction The series of International Standards applicable to types of offshor
38、e structure, ISO 19900 to ISO 19906, constitutes a common basis covering those aspects that address 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 reliability levels app
39、ropriate for manned and unmanned offshore structures, whatever 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 rules, safety elements, workmanship, qual
40、ity control procedures and national requirements, all of which are mutually dependent. The modification of one aspect of design in isolation can disturb the balance of reliability inherent in the overall concept or structural system. The implications involved in modifications, therefore, need to be
41、considered in relation to the overall reliability of all offshore structural systems. The series of International Standards applicable to types of offshore structure is intended to provide a wide latitude in the choice of structural configurations, materials and techniques without hindering innovati
42、on. 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. These include the magnitude and probability of seismic events, the use and impo
43、rtance of the platform, 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 be considered in relation to the overall reliability of the structure. Seismic condition
44、s 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 assessments will be required to complete the design or assessment of a structure. This par
45、t of ISO 19901 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 general requirements standard ISO 19900 and within the structure-specific s
46、tandards, 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 part of ISO 19901 is provided in informative Annex A. The clause numbering in Annex A is
47、 the same as in the normative text to facilitate cross-referencing. Regional information on expected seismic accelerations for offshore areas is provided in informative Annex B. ENISO199012:2004INTENRATIONAL TSANDADR IS-10991 O2:(4002E)I SO 4002 All irthgs ersedevr 1Petroleum and natural gas industr
48、ies Specific requirements for offshore structures Part 2: Seismic design procedures and criteria 1 Scope This part of ISO 19901 contains requirements for defining the seismic design procedures and criteria for offshore structures; guidance on the requirements is included in Annex A. The requirements are applicable to fixed steel structures and fixed concrete structures. The effects of seismic events on floating structures and partially buoyant
