1、BRITISH STANDARD BS EN 1993-4-2:2007Eurocode 3 Design ofsteel structures Part 4-2: TanksICS 23.020.01; 91.010.30; 91.080.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53
2、g44g42g43g55g3g47g36g58Incorporating corrigendumJuly 2009National forewordThis British Standard is the UK implementation of EN 1993-4-2:2007, 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 CEN co
3、rrigendum 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 the rele
4、vant 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 The conflicting national standards will be withdrawn at the end of the co-existence period, after all the EN Eurocodes of a package are available.Following publication of the EN, there is a period allowed for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 the N
5、ational 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 At the end of this co-existence period, the conflicting parts of national standard(s) will be withdrawn.In the UK there
6、 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 request
7、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 for a
8、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 1993-4-2To enable EN 1993-4-2 to be used in the UK, the committee has decided that no National Annex will be issued and recommend the following: all th
9、e 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 cannot c
10、onfer immunity from legal obligations.BS EN 1993-4-2:2007This 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 66469 4Implementation of C
11、EN corrigendum July 2009, and correction to national forewordEUROPEAN STANDARDNORME EUROP ENNEEUROP ISCHE NORMEN 1993-4-2February 2007ICS 23.020.01; 91.010.30; 91.080.10 Supersedes ENV 1993-4-2:1999 English VersionEurocode 3 - Design of steel structures - Part 4-2: TanksEurocode 3 - Calcul des struc
12、tures en acier - Partie 4-2:RservoirsEurocode 3 - Bemessung und Konstruktion vonStahlbauten - Teil 4-2: Silos,Tankbauwerke undRohrleitungen - TankbauwerkeThis European Standard was approved by CEN on 12 June 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipula
13、te the conditions for giving 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 exist
14、s in three official versions (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 bodie
15、s of Austria, Belgium, Bulgaria, 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.EUROPEA
16、N COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE F R 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 1993-4-2:2007: EEN 1993-4-2: 2007
17、 (E) 2 Contents Foreword 4 1 General 8 1.1 Scope 8 1.2 Normative references 8 1.3 Assumptions 10 1.4 Distinction between principles and application rules 10 1.5 Terms and definitions 10 1.6 Symbols used in Part 4.2 of Eurocode 3 12 1.7 Sign conventions 13 1.8 Units 18 2 Basis of design 19 2.1 Requir
18、ements 19 2.2 Reliability differentiation 19 2.3 Limit states 19 2.4 Actions and environmental effects 19 2.5 Material properties 19 2.6 Geometrical data 20 2.7 Modelling of the tank for determining action effects 20 2.8 Design assisted by testing 20 2.9 Action effects for limit state verifications
19、20 2.10 Combinations of actions 22 2.11 Durability 22 3 Properties of materials 23 3.1 General 23 3.2 Structural steels 23 3.3 Steels for pressure purposes 23 3.4 Stainless steels 23 3.5 Toughness requirements 24 4 Basis for structural analysis 25 4.1 Ultimate limit states 25 4.2 Analysis of the cir
20、cular shell structure of a tank 25 4.3 Analysis of the box structure of a rectangular tank 27 4.4 Equivalent orthotropic properties of corrugated sheeting 28 5 Design of cylindrical walls 29 5.1 Basis 29 5.2 Distinction of cylindrical shell forms 29 5.3 Resistance of the tank shell wall 29 5.4 Consi
21、derations for supports and openings 30 5.5 Serviceability limit states 33 6 Design of conical hoppers 34 7 Design of circular roof structures 34 7.1 Basis 34 7.2 Distinction of roof structural forms 34 7.3 Resistance of circular roofs 35 7.4 Considerations for individual structural forms 35 BS EN 19
22、93-4-2:2007EN 1993-4-2: 2007 (E) 3 7.5 Serviceability limit states 36 8 Design of transition junctions at the bottom of the shell and supporting ring girders 36 9 Design of rectangular and planar-sided tanks 37 9.1 Basis 37 9.2 Distinction of structural forms 37 9.3 Resistance of vertical walls 37 9
23、.4 Serviceability limit states 38 10 Requirements on fabrication, execution and erection with relation to design 38 11 Simplified design 39 11.1 General 39 11.2 Fixed roof design 40 11.3 Shell design 46 11.4 Bottom design 50 11.5 Anchorage design 51 Annex A normative 53 Actions on tanks 53 A.1 Gener
24、al 53 A.2 Actions 53 BS EN 1993-4-2:2007EN 1993-4-2: 2007 (E) 4 Foreword This European Standard EN 1993-4-2, Eurocode 3: “Design of Steel Structures Part 4-2: Tanks”,has been prepared by Technical Committee CEN/TC250 Structural Eurocodes , the Secretariatof which is held by BSI. CEN/TC250 is respons
25、ible for all Structural Eurocodes. 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 August 2007, and conflicting National Standards shall be withdrawn at latest by March 2010. This Eurocode superse
26、des ENV1993-4-2: 1999. According to the CEN-CENELEC Internal Regulations, 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, Ice
27、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, 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
28、field of construction, based on article 95 of the Treaty. The objective of the programme was the elimination oftechnical 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 r
29、ules for the design of construction works which, in a first stage, 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, co
30、nducted the development of the Eurocodes programme, which led to 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 publicatio
31、n of the Eurocodes to the CEN through a series of Mandates, in 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 Dir
32、ective 89/106/EEC on construction products - CPD - and Council 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 gener
33、ally consisting of a number of Parts: EN1990 Eurocode 0: Basis of structural design EN1991 Eurocode 1: Actions on structures EN1992 Eurocode 2: Design of concrete structures 1)Agreement between the Commission of the European Communities and the European Committee for Standardisation (CEN) concerning
34、 the work on EUROCODES for the design of building and civil engineering works (BC/CEN/03/89). BS EN 1993-4-2:2007EN 1993-4-2: 2007 (E) 5 EN1993 Eurocode 3: Design of steel structures EN1994 Eurocode 4: Design of composite steel and concrete structures EN1995 Eurocode 5: Design of timber structures E
35、N1996 Eurocode 6: Design of masonry structures EN1997 Eurocode 7: 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
36、 have safeguarded their right to determine values related to regulatory 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 f
37、ollowing purposes: as a means to prove compliance of building 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
38、for specifying contracts for construction works and related engineering 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 I
39、nterpretative Documents2)referred to in Article 12 of the CPD, 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
40、product standards with a view to achieving full compatibility 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.
41、 Unusual forms of construction or design conditions are not 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 (in
42、cluding any annexes), as published by CEN, which may be preceded by a National title page and National foreword, and may be followed by a National Annex. 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
43、the necessary links between the essential requirements and the mandates for 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
44、classes or levels for each requirement where necessary ; b) indicate methods 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
45、harmonised standards and guidelines for European technical approvals. The Eurocodes, de facto, play a similar role in the field of the ER 1 and a part of ER 2. BS EN 1993-4-2:2007EN 1993-4-2: 2007 (E) 6 The National Annex may only contain information on those parameters which are left open in the Eu
46、rocode for national choice, known as Nationally Determined Parameters, to be used for the design of buildings and civil engineering works to be constructed in the country concerned, i.e. : values and/or classes where alternatives are given in the Eurocode, values to be used where a symbol only is gi
47、ven in the Eurocode, country specific data (geographical, climatic, etc), e.g. snow map, the procedure to be used where alternative procedures are given in the Eurocode. It may also contain: decisions on the application of informative annexes, references to non-contradictory complementary informatio
48、n to assist the user to apply the Eurocode. Links between Eurocodes and harmonised technical specifications (ENs and ETAs) for products There is a need for consistency between the harmonised technical specifications for construction products and the technical rules for works4). Furthermore, all the
49、information accompanying the CE Marking of the construction products which refer to Eurocodes should clearly mention which Nationally Determined Parameters have been taken into account. Additional information specific to EN1993-4-2 EN 1993-4-2 gives design guidance for the structural design of tanks. EN 1993-4-2 gives design rules that supplement the generic rules in the many parts of EN 1993-1. EN 1993-4-2 is intended for clients, designers, contractors and relevant authorities. EN 1993-4-2 is intended to be used in conjunction with EN 1990
