1、BRITISH STANDARDBS EN 1999-1-2:2007Incorporating corrigenda Eurocode 9 Design of aluminium structures Part 1-2: Structural fire designICS 91.010.30; 91.080.10; 13.220.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40
2、g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58December 2008, March 2009 and October 2009 National forewordThis British Standard is the UK implementation of EN 1999-1-2:2007, incorporating corrigendum October 2009. It supersedes DD ENV 1999-1-2:2000 which is withdrawn.The start
3、 and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by CEN corrigendum October 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 con
4、crete and steel, timber, masonry and aluminium, this is to enable a common date of withdrawal (DOW) for all the relevant parts that are needed for a particular design. The conflicting national standards will be withdrawn at the end of the coexistence period, after all the EN Eurocodes of a package a
5、re available.Following publication of the EN, there is a period allowed for national calibration during which the national annex is issued, followed by a further coexistence period of a maximum 3 years. During the coexistence period Member States will be encouraged to adapt their national provisions
6、 to withdraw conflicting national rules before the end of the coexistent period in March 2010.At the end of this coexistence period, the national standard(s) will be withdrawn.In the UK, the following national standards are superseded by the Eurocode 9 series. These standards will be withdrawn on a
7、date to be announced.Eurocode Superseded British StandardsEN 1999-1-1 BS 8118-2:1991 Structural use of aluminium. Specification for materials, workmanship and protection (superseded).DD ENV 1999-1-1:2000 Eurocode 9. Design of aluminium structures. General rules. General rules and rules for buildings
8、 (superseded).BS 8118-1:1991 Structural use of aluminium. Code of practice for design (partially superseded).EN 1999-1-2 DD ENV 1999-1-2 Design of aluminium structures. General rules. Structural fire design (superseded).EN 1999-1-3 DD ENV 1999-2:2000 Eurocode 9. Design of aluminium structures. Struc
9、tures susceptible to fatigue (superseded).BS 8118-1:1991 Structural use of aluminium. Code of practice for design (partially superseded).EN 1999-1-4 BS 8118-1:1991 Structural use of aluminium. Code of practice for design (partially superseded).EN 1999-1-5 NoneBS EN 1999-1-2:2007This British Standard
10、 waspublished under the authorityof the Standards Policy andStrategy Committeeon 30 March 2007 BSI 2010Amendments/corrigenda issued since publicationDate Comments 31 December 2008 Publication of corrected English language text as supplied by CEN31 March 2009 Re-print of the CEN text provided31 Augus
11、t 2010 Implementation of CEN corrigendum October 2009ISBN 978 0 580 69404 2The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/12, Structural use of aluminium.A list of organizations represented on this
12、subcommittee can be obtained on request 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, and a note will qualify it as a Nationally Determined Parameter (NDP). NDPs can be a spe
13、cific value for a factor, a specific level or class, a particular method or a particular application rule if several are proposed in the EN.To enable EN 1999 to be used in the UK, the NDPs will be published in a National Annex, which will be made available by BSI in due course, after public consulta
14、tion has taken place.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 confer immunity from legal obligations.BS EN 1999-1-2:2007iblankEUROPEAN STANDARDNORME EUROPENNEEU
15、ROPISCHE NORMEN 1999-1-2February 2007ICS 91.010.30; 91.080.10 Supersedes ENV 1999-1-2:1998 English VersionEurocode 9 - Design of aluminium structures - Part 1-2:Structural fire designEurocode 9 - Calcul des structures en aluminium - Partie 1-2: Calcul du comportement au feuEurocode 9 - Bemessung und
16、 Konstruktion vonAluminiumtragwerken - Teil 1-2: Tragwerksbemessung frden BrandfallThis European Standard was approved by CEN on 18 September 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a
17、 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 versions (English, French, German). A version
18、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, Bulgaria, Cyprus, Czech Republic, Denmark,
19、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 STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROP
20、ISCHES 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 1999-1-2:2007: EIncorporating corrigendum October 2009EN 1999-1-2:2007 (E) 2 Contents Page Foreword4
21、 1 General10 1.1 Scope 10 1.1.1 Scope of EN 1999.10 1.1.2 Scope of EN 1999-1-2 10 1.2 Normative references 11 1.3 Assumptions 11 1.4 Distinction between principles and application rules11 1.5 Terms and definitions .12 1.5.1 Special terms relating to design in general 12 1.5.2 Terms relating to therm
22、al actions12 1.5.3 Terms relating to material and products.12 1.5.4 Terms relating to heat transfer analysis .12 1.5.5 Terms relating to mechanical behaviour analysis .13 1.6 Symbols 13 2 Basis of design 15 2.1 Requirements.15 2.1.1 Basic requirements15 2.1.2 Nominal fire exposure .15 2.1.3 Parametr
23、ic fire exposure.16 2.2 Actions16 2.3 Design values of material properties.16 2.4 Verification methods .16 2.4.1 General16 2.4.2 Member analysis17 2.4.3 Analysis of part of the structure 18 2.4.4 Global structural analysis.19 3 Material .19 3.1 General19 3.2 Mechanical properties of aluminium alloys
24、 19 3.2.1 Strength and deformation properties 19 3.2.2 Unit mass22 3.3 Thermal properties 22 3.3.1 Aluminium alloys .22 3.3.2 Fire protection materials.24 4 Structural fire design.24 4.1 General24 4.2 Simple calculation models25 4.2.1 General25 4.2.2 Resistance 25 4.2.3 Aluminium temperature develop
25、ment .28 4.3 Advanced calculation models 34 4.3.1 General34 4.3.2 Thermal response35 4.3.3 Mechanical response 35 4.3.4 Validation of advanced calculation models 36 Annex A (informative) Properties of aluminium alloys and/or tempers not listed in EN 1999-1-137 Annex B (informative) Heat transfer to
26、external structural aluminium members.38 B.1 General38 BS EN 1999-1-2:2007EN 1999-1-2:2007 (E) 3 B.1.1 Basis .38 B.1.2 Conventions for dimensions38 B.1.3 Heat balance 38 B.1.4 Overall configuration factors .40 B.2 Column not engulfed in flame41 B.2.1 Radiative heat transfer41 B.2.2 Flame emissivity4
27、2 B.2.3 Flame temperature 46 B.2.4 Flame absorptivity.47 B.3 Beam not engulfed in flame47 B.3.1 Radiative heat transfer47 B.3.2 Flame emissivity49 B.3.3 Flame temperature 50 B.3.4 Flame absorptivity.50 B.4 Column engulfed in flame.50 B.5 Beam fully or partially engulfed in flame 53 B.5.1 Radiative h
28、eat transfer53 B.5.2 Flame emissivity57 B.5.3 Flame absorptivity.57 BS EN 1999-1-2:2007EN 1999-1-2:2007 (E) 4 Foreword This European Standard (EN 1999-1-2:2007) has been prepared by Technical Committee CEN/TC 250 “Structural Eurocodes”, the secretariat of which is held by BSI. This European Standard
29、 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 standard shall be withdrawn at the latest by March 2010. This European Standard supersedes ENV 1999-1-2:1998 CEN/TC 250 is responsib
30、le for all Structural Eurocodes According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hu
31、ngary, Iceland, 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 program
32、me in the field of construction, based on article 95 of the Treaty. The objective 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
33、technical rules 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
34、 States, conducted 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 agreement1between the Commission and CEN, to transfer the preparation and the
35、publication 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 C
36、ouncil Directive 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 stand
37、ards generally consisting of a number of Parts: EN 1990 Eurocode 0: Basis of Structural Design EN 1991 Eurocode 1: Actions on structures 1Agreement between the Commission of the European Communities and the European Committee for Standardisation (CEN) concerning the work on EUROCODES for the design
38、of building and civil engineering works (BC/CEN/03/89). BS EN 1999-1-2:2007EN 1999-1-2:2007 (E) 5 EN 1992 Eurocode 2: Design of concrete structures EN 1993 Eurocode 3: Design of steel structures EN 1994 Eurocode 4: Design of composite steel and concrete structures EN 1995 Eurocode 5: Design of timbe
39、r structures EN 1996 Eurocode 6: Design of masonry structures EN 1997 Eurocode 7: Geotechnical design EN 1998 Eurocode 8: Design of structures for earthquake resistance EN 1999 Eurocode 9: Design of aluminium structures Eurocode standards recognise the responsibility of regulatory authorities in eac
40、h Member State and 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 d
41、ocuments for the following 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 No.1 Mechanical resistance and stability, and Essential Requirement No 2 Safety in case of f
42、ire as a basis for specifying contracts for the execution of 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
43、direct relationship with the Interpretative Documents2referred 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 EOT
44、A Working Groups working on 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 tradition
45、al and an innovative nature. Unusual forms of construction or design conditions are not specifically covered and additional expert consideration will be required by the designer in such cases. 2According to Art. 3.3 of the CPD, the essential requirements (ERs) shall be given concrete form in interpr
46、etative documents for the creation of the necessary links between the essential requirements and the mandates for harmonised ENs and ETAGs/ETAs. 3According to Art. 12 of the CPD the interpretative documents shall : a) give concrete form to the essential requirements by harmonising the terminology an
47、d the technical bases and indicating 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
48、a reference for the establishment of 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 1999-1-2:2007EN 1999-1-2:2007 (E) 6 National standards implementing Eurocodes The National Standa
49、rds implementing Eurocodes will comprise the full text of the Eurocode (including 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 (informative). The National Annex (informative) 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 and civil engineering works to be constructed in the country concerned, i.e.: values for partial factor
