API RP 2EQ-2014 Seismic Design Procedures and Criteria for Offshore Structures (FIRST EDITION).pdf

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1、Seismic Design Procedures and Criteria for Offshore StructuresANSI/API RECOMMENDED PRACTICE 2EQFIRST EDITION, NOVEMBER 2014ISO 19901-2:2004 (Modified), Petroleum and natural gas industriesSpecific requirements for offshore structuresPart 2: Seismic design procedures and criteriaSpecial NotesAPI publ

2、ications necessarily address problems of a general nature. With respect to particular circumstances, local,state, and federal laws and regulations should be reviewed.Neither API nor any of APIs employees, subcontractors, consultants, committees, or other assignees make anywarranty or representation,

3、 either express or implied, with respect to the accuracy, completeness, or usefulness of theinformation contained herein, or assume any liability or responsibility for any use, or the results of such use, of anyinformation or process disclosed in this publication. Neither API nor any of APIs employe

4、es, subcontractors,consultants, or other assignees represent that use of this publication would not infringe upon privately owned rights.API publications may be used by anyone desiring to do so. Every effort has been made by the Institute to assure theaccuracy and reliability of the data contained i

5、n them; however, the Institute makes no representation, warranty, orguarantee in connection with this publication and hereby expressly disclaims any liability or responsibility for loss ordamage resulting from its use or for the violation of any authorities having jurisdiction with which this public

6、ation mayconflict.API publications are published to facilitate the broad availability of proven, sound engineering and operatingpractices. These publications are not intended to obviate the need for applying sound engineering judgmentregarding when and where these publications should be utilized. Th

7、e formulation and publication of API publicationsis not intended in any way to inhibit anyone from using any other practices.Any manufacturer marking equipment or materials in conformance with the marking requirements of an API standardis solely responsible for complying with all the applicable requ

8、irements of that standard. API does not represent,warrant, or guarantee that such products do in fact conform to the applicable API standard.Users of this recommended practice should not rely exclusively on the information contained in this document. Soundbusiness, scientific, engineering, and safet

9、y judgment should be used in employing the information contained herein.All rights reserved. No part of this work may be reproduced, translated, stored in a retrieval system, or transmitted by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission

10、from the publisher. Contact the Publisher, API Publishing Services, 1220 L Street, NW, Washington, DC 20005.Copyright 2014 American Petroleum InstituteAPI ForewordThe verbal forms used to express the provisions in this specification are as follows: the term “shall” denotes a minimum requirement in o

11、rder to conform to the specification; the term “should” denotes a recommendation or that which is advised but not required in order to conform to thespecification; the term “may” is used to express permission or a provision that is optional; the term “can” is used to express possibility or capabilit

12、y.Nothing contained in any API publication is to be construed as granting any right, by implication or otherwise, for themanufacture, sale, or use of any method, apparatus, or product covered by letters patent. Neither should anythingcontained in the publication be construed as insuring anyone again

13、st liability for infringement of letters patent.This document was produced under API standardization procedures that ensure appropriate notification andparticipation in the developmental process and is designated as an API standard. Questions concerning theinterpretation of the content of this publi

14、cation or comments and questions concerning the procedures under whichthis publication was developed should be directed in writing to the Director of Standards, American PetroleumInstitute, 1220 L Street, NW, Washington, DC 20005. Requests for permission to reproduce or translate all or any partof t

15、he material published herein should also be addressed to the director.Generally, API standards are reviewed and revised, reaffirmed, or withdrawn at least every five years. A one-timeextension of up to two years may be added to this review cycle. Status of the publication can be ascertained from the

16、API Standards Department, telephone (202) 682-8000. A catalog of API publications and materials is publishedannually by API, 1220 L Street, NW, Washington, DC 20005.Standards referenced herein may be replaced by other international or national standards that can be shown to meetor exceed the require

17、ments of the referenced standard.Suggested revisions are invited and should be submitted to the Standards Department, API, 1220 L Street, NW,Washington, DC 20005, standardsapi.org.This standard is under the jurisdiction of the API Subcommittee on Offshore Structures. This is standard modifiedfrom th

18、e English version of ISO 19901-2:2004. ISO 19901-2 was prepared by Technical Committee ISO/TC 67,Materials, equipment and offshore structures for petroleum, petrochemical and natural gas industries, SubcommitteeSC 7, Offshore structures.iiiContentsPage1 Scope . . . . . . . . . . . . . . . . . . . .

19、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Normative References. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Terms and De

20、finitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Symbols and Abbreviated Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

21、.1 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54.2 Abbreviated Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22、. . . . . . . . . . . . . . . . . . 65 Earthquake Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Seismic Design Principles and Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

23、 . . . . . . . . . . . . . . . . . . . . 76.1 Design Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76.2 Seismic Design Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76.3 Spectral Acceleration Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106.4 Seismic Risk Category . . . . . . . . . . . . . . . . . . . . . . . .

25、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116.5 Seismic Design Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 Simplified Seismic Action Procedure . . . . . . . . .

26、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127.1 Soil Classification and Spectral Shape. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127.2 Seismic Action Procedure . . . . . . . . . . . . .

27、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 Detailed Seismic Action Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178.1 Site-specific Seismic Hazard Assessment.

28、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178.2 Probabilistic Seismic Hazard Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178.3 Deterministic Seismic Hazard Analysis . .

29、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178.4 Seismic Action Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198.5 Local Site Response Analyses . .

30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209 Performance Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229.1 ELE Performance. . . .

31、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229.2 ALE Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32、 22Annex A (informative) Additional Information and Guidance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Annex B (informative) Regional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Ann

33、ex C (informative) Identification and Explanation of Deviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34、 . . . . 52Figures1 Seismic Design Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 Seismic Acceleration Spectrum for 5 % Damping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

35、 . . . . . 153 Probabilistic Seismic Hazard Analysis Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184 Typical Seismic Hazard Curve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

36、. . . 21B.1 5 % Damped Spectral Response Accelerations for Offshore Africa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33B.2 5 % Damped Spectral Response Accelerations for Offshore North America . . . . . . . . . . . . . . . . . . . . . . 35B.3 5 % Damped Spectral Response Accelerati

37、ons for Offshore Central America . . . . . . . . . . . . . . . . . . . . . 36B.4 5 % Damped Spectral Response Accelerations for Offshore South America . . . . . . . . . . . . . . . . . . . . . . 37B.5 5 % Damped Spectral Response Accelerations for Offshore Australia and New Zealand. . . . . . . . .

38、. . . 39vContentsPageB.6 5 % Damped Spectral Response Accelerations for Offshore East Asia. . . . . . . . . . . . . . . . . . . . . . . . . . . 40B.7 5 % Damped Spectral Response Accelerations for Offshore South Asia . . . . . . . . . . . . . . . . . . . . . . . . . 42B.8 5 % Damped Spectral Respons

39、e Accelerations for Offshore Europe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44B.9 5 % Damped Spectral Response Accelerations for Offshore Indonesia . . . . . . . . . . . . . . . . . . . . . . . . . . 45B.10 5 % Damped Spectral Response Accelerations for Offshore Japan. . . . . . . .

40、 . . . . . . . . . . . . . . . . . . . . . . 46B.11 5 % Damped Spectral Response Accelerations for Offshore Middle East. . . . . . . . . . . . . . . . . . . . . . . . . 48Tables1 Site Seismic Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

41、 . . . . . . . . . . . . . . . . . . . 112 Target Annual Probability of Failure, Pf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Seismic Risk Category, SRC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42、. . . . . . . . . . . . . . . . . . . . . . . 114 Seismic Design Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Determination of Site Class . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

43、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136 Values of Cafor Shallow Foundations and 0.2 s Period Spectral Acceleration. . . . . . . . . . . . . . . . . . . . . 147 Values of Cvfor Shallow Foundations and 1.0 s Period Spectral Acceleration . . . . . . . . . . . . . . . . . . . . . 14

44、8 Values of Caand Cvfor Deep Pile Foundations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Scale Factors for ALE Spectra. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1610

45、CrFactors for Steel Jacket of Fixed Offshore Platforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1611 Correction Factor, Cc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

46、12 Minimum ELE Return Periods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20A.1 Correction Factor Ccfor ALE Spectral Acceleration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31A.2 C

47、orrection Factor on Pf. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31viForeword Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights.ISO shall not

48、be held 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 forpetroleum, petrochemical and natural gas industries, Subcommittee 7, Offshore structures.ISO 19901 consists of the following pa

49、rts, under the general title Petroleum and natural gas industriesSpecificrequirements for offshore structures: Part 1: Metocean design and operating considerations, Part 2: Seismic design procedures and criteria, Part 3: Topsides structure, Part 4: Geotechnical and foundation design considerations, Part 5: Weight control during engineering and construction, 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 follo

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