1、BRITISH STANDARD BS EN 1993-4-3:2007Incorporatingcorrigendum July 2009 Eurocode 3 Design ofsteel structures Part 4-3: PipelinesICS 23.040.01; 91.010.30; 91.080.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g
2、44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58National forewordThis British Standard is the UK implementation of EN 1993-4-3:2007, incorporating corrigendum July 2009. The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by
3、CEN corrigendum July 2009 is indicated in the text by .The structural Eurocodes are divided into packages by grouping Eurocodes for each of the main materials: concrete, steel, composite concrete and steel, timber, masonry and aluminium; this is to enable a common date of withdrawal (DOW) for all th
4、e relevant parts that are needed for a particular design. The conflicting national standards will be withdrawn at the end of the co-existence period, after all the EN Eurocodes of a package are available.Following publication of the EN, there is a period allowed for national calibration during which
5、 the National Annex is issued, followed by a co-existence period of a maximum three years. During the co-existence period Member States are encouraged to adapt their national provisions. At the end of this co-existence period, the conflicting parts of national standard(s) will be withdrawn.In the UK
6、 there are no conflicting national standards.The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/31, Structural use of steel.A list of organizations represented on this subcommittee can be obtained on re
7、quest to its secretary.Where a normative part of this EN allows for a choice to be made at the national level, the range and possible choice will be given in the normative text as Recommended Values, and a note will qualify it as a Nationally Determined Parameter (NDP). NDPs can be a specific value
8、for a factor, a specific level or class, a particular method or a particular application rule if several are proposed in the EN.UK National Annex to BS EN 1993-4-3To enable EN 1993-4-3 to be used in the UK, the committee has decided that no National Annex will be issued and recommend the following:
9、all the Recommended Values should be used; all Informative Annexes may be used; and no NCCI have currently been identified.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 ca
10、nnot confer immunity from legal obligationBS EN 1993-4-3:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2007 BSI 2010Amendments/corrigenda issued since publicationDate Comments 28 February 2010ISBN 978 0 580 66471 7Implementation
11、of CEN corrigendum July 2009, and correction to national forewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1993-4-3February 2007ICS 23.040.01; 91.010.30; 91.080.10 Supersedes ENV 1993-4-3:1999 English VersionEurocode 3 - Design of steel structures - Part 4-3: PipelinesEurocode 3 - Calcul des
12、 constructions en acier - Partie 4-3:TuyauterieEurocode 3 - Bemessung und Konstruktion vonStahlbauten - Teil 4-3: RohrleitungenThis European Standard was approved by CEN on 12 June 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
13、g this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official version
14、s (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulg
15、aria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZA
16、TIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1993-4-3:2007: EEN 1993-4-3: 2007 (E) 2 Content Foreword 3 Ba
17、ckground of the Eurocode programme 3 Status and field of application of Eurocodes 4 National Standards implementing Eurocodes 4 Links between Eurocodes and harmonised technical specifications (ENs and ETAs) 5 Additional information specific to EN 1993-4-3 5 National Annex for EN 1993-4-3 5 1 General
18、 7 1.1 Scope 7 1.2 Normative references 8 1.3 Assumptions 9 1.4 Distinction between principles and application rules 9 1.5 Definitions 9 1.6 S.I. units 10 1.7 Symbols used in Part 4-3 of Eurocode 3 10 1.8 Terminology 11 2 Basis of design 13 2.1 General 13 2.2 Fundamental requirements for pipelines 1
19、3 2.3 Reliability differentiation 13 2.4 Methods of analysis 14 2.5 Ultimate limit states 14 2.6 Serviceability limit states 15 3 Properties of materials 16 3.1 General 16 3.2 Mechanical properties of pipeline steels 16 3.3 Mechanical properties of welds 16 3.4 Toughness requirements of plate materi
20、als and welds 17 3.5 Fasteners 17 3.6 Soil properties 17 4 Actions 18 4.1 Actions to be considered 18 4.2 Partial factors for actions 18 4.3 Load combinations for ultimate limit states 18 4.4 Load combinations for serviceability limit state design 19 5 Analysis 20 5.1 Structural models 20 5.2 Ultima
21、te limit state verification 23 5.3 Serviceability limit state verifications 25 6 Structural design aspects of fabrication and erection 25 Annex A: informative - Analysis of resistances, deformations, stresses and strains of buried pipelines 26 A.1 Procedure and scope of analysis 26 A.2 Analysis for
22、straight pipes 26 A.3 Analysis for bends 33 Annex B: informative - Bibliography to National Standards and design guides 34 Annex C: informative - Bibliography 35 C.1 General bibliography on pipelines 35 C.2 Bibliography on geotechnical engineering 39 BS EN 1993-4-3:2007EN 1993-4-3: 2007 (E) 3 Forewo
23、rd This European Standard EN 1993-4-3, “Eurocode 3: Design of steel structures Part 4.3: Pipelines”, has been prepared by Technical Committee CEN/TC250 Structural Eurocodes , the Secretariat of which is held by BSI. CEN/TC250 is responsible for all Structural Eurocodes. This European Standard shall
24、be given the status of a National Standard, either by publication of an identical text or by endorsement, at the latest by August 2007, and conflicting National Standards shall be withdrawn at latest by March 2010. This document supersedes ENV 1993-4-3:1999. According to the CEN-CENELEC Internal Reg
25、ulations, the National Standard Organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Neth
26、erlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Background of the Eurocode programme In 1975, the Commission of the European Community decided on an action programme in the field of construction, based on article 95 of the Treaty. The ob
27、jective of the programme was the elimination of technical obstacles to trade and the harmonisation of technical specifications. Within this action programme, the Commission took the initiative to establish a set of harmonised technical rules for the design of construction works which, in a first sta
28、ge, would serve as an alternative to the National rules in force in the Member States and, ultimately, would replace them. For fifteen years, the Commission, with the help of a Steering Committee with Representatives of Member States, conducted the development of the Eurocodes programme, which led t
29、o the first generation of European codes in the 1980s. In 1989, the Commission and the Member States of the EU and EFTA decided, on the basis of an agreement1)between the Commission and CEN, to transfer the preparation and the publication of the Eurocodes to the CEN through a series of Mandates, in
30、order to provide them with a future status of European Standard (EN). This links de facto the Eurocodes with the provisions of all the Councils Directives and/or Commissions Decisions dealing with European standards (e.g. the Council Directive 89/106/EEC on construction products - CPD - and Council
31、Directives 93/37/EEC, 92/50/EEC and 89/440/EEC on public works and services and equivalent EFTA Directives initiated in pursuit of setting up the internal market). The Structural Eurocode programme comprises the following standards generally consisting of a number of Parts: EN1990 Eurocode 0: Basis
32、of structural design EN1991 Eurocode 1: Actions on structures EN1992 Eurocode 2: Design of concrete structures EN1993 Eurocode 3: Design of steel structures EN1994 Eurocode 4: Design of composite steel and concrete structures 1)Agreement between the Commission of the European Communities and the Eur
33、opean Committee for Standardisation (CEN) concerning the work on EUROCODES for the design of building and civil engineering works (BC/CEN/03/89).BS EN 1993-4-3:2007EN 1993-4-3: 2007 (E) 4 EN1995 Eurocode 5: Design of timber structures EN1996 Eurocode 6: Design of masonry structures EN1997 Eurocode 7
34、: Geotechnical design EN1998 Eurocode 8: Design of structures for earthquake resistance EN1999 Eurocode 9: Design of aluminium structures Eurocode standards recognise the responsibility of regulatory authorities in each Member State and have safeguarded their right to determine values related to reg
35、ulatory safety matters at national level where these continue to vary from State to State. Status and field of application of Eurocodes The Member States of the EU and EFTA recognise that EUROCODES serve as reference documents for the following purposes: - as a means to prove compliance of building
36、and civil engineering works with the essential requirements of Council Directive 89/106/EEC, particularly Essential Requirement N1 - Mechanical resistance and stability - and Essential Requirement N2 - Safety in case of fire; - as a basis for specifying contracts for construction works and related e
37、ngineering services; - as a framework for drawing up harmonised technical specifications for construction products (ENs and ETAs) The Eurocodes, as far as they concern the construction works themselves, have a direct relationship with the Interpretative Documents2)referred to in Article 12 of the CP
38、D, although they are of a different nature from harmonised product standards3). Therefore, technical aspects arising from the Eurocodes work need to be adequately considered by CEN Technical Committees and/or EOTA Working Groups working on product standards with a view to achieving full compatibilit
39、y of these technical specifications with the Eurocodes. The Eurocode standards provide common structural design rules for everyday use for the design of whole structures and component products of both a traditional and an innovative nature. Unusual forms of construction or design conditions are not
40、specifically covered and additional expert consideration will be required by the designer in such cases. National Standards implementing Eurocodes The National Standards implementing Eurocodes will comprise the full text of the Eurocode (including any annexes), as published by CEN, which may be prec
41、eded by a National title page and National foreword, and may be followed by a National Annex. The National Annex may only contain information on those parameters which are left open in the Eurocode for national choice, known as Nationally Determined Parameters, to be used for the design of buildings
42、 and civil engineering works to be constructed in the country concerned, i.e. : 2)According to Art. 3.3 of the CPD, the essential requirements (ERs) shall be given concrete form in interpretative documents for the creation of the necessary links between the essential requirements and the mandates fo
43、r harmonised ENs and ETAGs/ETAs.3)According to Art. 12 of the CPD the interpretative documents shall : (a) give concrete form to the essential requirements by harmonising the terminology and the technical bases and indicating classes or levels for each requirement where necessary ; (b) indicate meth
44、ods of correlating these classes or levels of requirement with the technical specifications, e.g. methods of calculation and of proof, technical rules for project design, etc. ; (c) serve as a reference for the establishment of harmonised standards and guidelines for European technical approvals. Th
45、e Eurocodes, de facto, play a similar role in the field of the ER 1 and a part of ER 2.BS EN 1993-4-3:2007EN 1993-4-3: 2007 (E) 5 - values and/or classes where alternatives are given in the Eurocode, - values to be used where a symbol only is given in the Eurocode, - country specific data (geographi
46、cal, climatic, etc), e.g. snow map, - the procedure to be used where alternative procedures are given in the Eurocode, - decisions on the application of informative annexes, - references to non-contradictory complementary information to assist the user to apply the Eurocode. Links between Eurocodes
47、and harmonised technical specifications (ENs and ETAs) There is a need for consistency between the harmonised technical specifications for construction products and the technical rules for works4). Furthermore, all the information accompanying the CE Marking of the construction products which refer
48、to Eurocodes shall clearly mention which Nationally Determined Parameters have been taken into account. Additional information specific to EN 1993-4-3 EN 1993-4-3 gives design rules for the structural design of buried pipelines, in particular for the evaluation of the strength, stiffness and deforma
49、tion capacity. The rules for local buckling in this part EN 1993-4-3 are in line with those in other pipeline standards. The design critical curvatures according to EN 1993-4-3 are larger than those that could be deduced from EN 1993-1-6. The main reasons are that the loading in buried pipelines is mainly deformation controlled and the consequences of local buckling are less severe than in structures where the loading is mainly load controlled. It is recognized that many standards exist for the design of pipelines covering many different aspects.
