DIN EN 1991-1-2-2010 Eurocode 1 Actions on structures - Part 1-2 General actions - Actions on structures exposed to fire German version EN 1991-1-2 2002 + AC 2009《欧洲规范1 对结构物的作用- 第1.pdf

1、December 2010 Translation by DIN-Sprachendienst.English price group 23No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).I

2、CS 13.220.50; 91.010.30!$llf“1737367www.din.deDDIN EN 1991-1-2Eurocode 1: Actions on structures Part 1-2: General actions Actions on structures exposed to fire(includes Corrigendum AC:2009)English translation of DIN EN 1991-1-2:2010-12Eurocode 1: Einwirkungen auf Tragwerke Teil 1-2: Allgemeine Einwi

3、rkungen Brandeinwirkungen auf Tragwerke(enthlt Berichtigung AC:2009)Englische bersetzung von DIN EN 1991-1-2:2010-12Eurocode 1: Actions sur les structures Partie 1-2: Actions gnrales Actions sur les structures exposes au feu(Corrigendum AC:2009 inclus)Traduction anglaise de DIN EN 1991-1-2:2010-12Su

4、persedesDIN EN 1991-1-2:2003-09 andDIN EN 1991-1-2 www.beuth.deDocument comprises 6 pagesIn case of doubt, the German-language original shall be considered authoritative.Corrigendum 1:2009-0910 .11 2DIN EN 1991-1-2:2010-12 2 A comma is used as the decimal marker. National foreword This standard has

5、been prepared by Technical Committee CEN/TC 250 “Structural Eurocodes” (Secretariat: BSI, United Kingdom), Subcommittee SC 1 “Eurocode 1: Actions on structures”. The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committ

6、ee), Working Committee NA 005-52-22 AA Konstruktiver baulicher Brandschutz. This European Standard is part of a series of standards dealing with structural design (Eurocodes) which are intended to be used as a “package”. In the Directive on the application and use of Eurocodes, issued by the EU Comm

7、ission, reference is made to transitional periods for the introduction of the Eurocodes in the Member states. It will be the responsibility of CEN and the EU Commission to agree the details of the introduction on a case-by-case basis. In Germany, this standard is to be applied in conjunction with th

8、e National Annex. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. The start and finish of text introduced or altered by amendment is indic

9、ated in the text by tags . Amendments This standard differs from DIN V ENV 1991-2-2:1997-05 as follows: a) the prestandard status has been changed to that of a full standard; b) the comments received from the national standards bodies have been taken into account and the text of the standard has bee

10、n completely revised. Compared with DIN EN 1991-1-2:2003-09 and DIN EN 1991-1-2 Corrigendum 1:2009-09, the following corrections have been made: a) this standard is the consolidated version of the previous 2002 edition with Corrigendum AC:2009; b) the standard has been editorially revised. Previous

11、editions DIN V ENV 1991-2-2: 1997-05 DIN EN 1991-1-2: 2003-09 DIN EN 1991-1-2 Corrigendum 1: 2009-09 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1991-1-2 November 2002 + AC March 2009 ICS 13.220.50; 91.010.30 English version Eurocode 1: Actions on structures Part 1-2: General actions Action

12、s on structures exposed to fire Eurocode 1: Actions sur les structures Partie 1-2: Actions gnrales Actions sur les structures exposes au feu Eurocode 1: Einwirkungen auf Tragwerke Teil 1-2: Allgemeine Einwirkungen Brandeinwirkungen auf Tragwerke EN 1991-1-2:2002 was approved by CEN on 2002-09-01 and

13、 Corrigendum AC:2009 on 2009-03-04. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nat

14、ional standards may be obtained on application to the Management Centre or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and noti

15、fied to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour

16、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG 2009 CEN All rights of exploitation in any form and by any means reserved w

17、orldwide for CEN national Members. Ref. No. EN 1991-1-2:2002 + AC:2009 EManagement Centre: Avenue Marnix 17, B-1000 Brussels ContentsForeword to EN 1991-1-2:2002 + AC:20094Section 1 General .101.1 Scope 101.2 Normative references 101.3 Assumptions 111.4 Distinction between Principles and Application

18、 Rules. 111.5 Terms and definitions 111.5.1 Common terms used in Eurocode Fire parts . 111.5.2 Special terms relating to design in general. 131.5.3 Terms relating to thermal actions . 131.5.4 Terms relating to heat transfer analysis . 151.6 Symbols. 15Section 2 Structural Fire design procedure212.1

19、General 212.2 Design fire scenario. 212.3 Design fire . 212.4 Temperature Analysis . 212.5 Mechanical Analysis 22Section 3 Thermal actions for temperature analysis .233.1 General rules. 233.2 Nominal temperature-time curves . 243.2.1 Standard temperature-time curve. 243.2.2 External fire curve. 243.

20、2.3 Hydrocarbon curve . 253.3 Natural fire models 253.3.1 Simplified fire models .253.3.1.1 General . 253.3.1.2 Compartment fires 253.3.1.3 Localised fires . 263.3.2 Advanced fire models. 26Section 4 Mechanical actions for structural analysis 274.1 General 274.2 Simultaneity of actions. 274.2.1 Acti

21、ons from normal temperature design . 274.2.2 Additional actions 284.3 Combination rules for actions 284.3.1 General rule 284.3.2 Simplified rules . 284.3.3 Load level . 29Annex A (informative) Parametric temperature-time curves30Annex B (informative) Thermal actions for external members - Simplified

22、 calculationmethod 33B.1 Scope 33B.2 Conditions of use. 33PageDIN EN 1991-1-2:2010-12 EN 1991-1-2:2002 + AC:2009 (E) 2 B.3 Effects of wind. 34B.3.1 Mode of ventilation 34B.3.2 Flame deflection by wind 34B.4 Characteristics of fire and flames 35B.4.1 No forced draught. 35B.4.2 Forced draught . 37B.5

23、Overall configuration factors 39Annex C (informative) Localised fires41Annex D (informative) Advanced fire models44D.1 One-zone models 44D.2 Two-zone models 45D.3 Computational fluid dynamic models.45Annex E (informative) Fire load densities .46E.1 General 46E.2 Determination of fire load densities.

24、 47E.2.1 General. 47E.2.2 Definitions. 47E.2.3 Protected fire loads. 48E.2.4 Net calorific values . 48E.2.5 Fire load classification of occupancies . 50E.2.6 Individual assessment of fire load densities . 50E.3 Combustion behaviour 50E.4 Rate of heat release Q 51Annex F (informative) Equivalent time

25、 of fire exposure.53Annex G (informative) Configuration factor 55G.1 General 55G.2 Shadow effects 56G.3 External members . 56Bibliography 59DIN EN 1991-1-2:2010-12 EN 1991-1-2:2002 + AC:2009 (E) 3 Background of the Eurocode programmeIn 1975, the Commission of the European Community decided on an act

26、ion programme in the field ofconstruction, 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 har

27、monisedtechnical rules for the design of construction works which, in a first stage, would serve as an alternative tothe 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 M

28、emberStates, conducted the development of the Eurocodes programme, which led to the first generation ofEuropean codes in the 1980s.In 1989, the Commission and the Member States of the EU and EFTA decided, on the basis of anagreement1between the Commission and CEN, to transfer the preparation and the

29、 publication of theEurocodes to CEN through a series of Mandates, in order to provide them with a future status ofEuropean Standard (EN). This links de facto the Eurocodes with the provisions of all the CouncilsDirectives and/or Commissions Decisions dealing with European Standards (e.g. the Council

30、 Directive89/106/EEC on construction products - CPD - and Council Directives 93/37/EEC, 92/50/EEC and89/440/EEC on public works and services and equivalent EFTA Directives initiated in pursuit of setting upthe internal market).The Structural Eurocode programme comprises the following standards gener

31、ally consisting of a numberof Parts:EN 1990, Eurocode: Basis of structural design.EN 1991, Eurocode 1: Actions on structures.prEN 1992, Eurocode 2: Design of concrete structures.prEN 1993, Eurocode 3: Design of steel structures.1Agreement between the Commission of the European Communities and the Eu

32、ropean Committee for Standardisation (CEN)concerning the work on EUROCODES for the design of building and civil engineering works (BC/CEN/03/89).Foreword to EN 1991-1-2:2002 + AC:2009 This document (EN 1991-1-2:2002 + AC:2009) has been prepared by Technical Committee CEN/TC 250 “Structural Eurocodes

33、”, the secretariat of which is held by BSI. CEN/TC 250/SC 1 is responsible for Eurocode 1. 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 2003, and conflicting national standards shall be wit

34、hdrawn at the latest by December 2009. This document supersedes ENV 1991-2-2:1995. The Annexes A, B, C, D, E, F and G are informative. DIN EN 1991-1-2:2010-12 EN 1991-1-2:2002 + AC:2009 (E) 4 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following cou

35、ntries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slo

36、venia, Spain, Sweden, Switzerland, and United Kingdom. prEN 1994, Eurocode 4: Design of composite steel and concrete structures.prEN 1995, Eurocode 5: Design of timber structures.prEN 1996, Eurocode 6: Design of masonry structures.prEN 1997, Eurocode 7: Geotechnical design.prEN 1998, Eurocode 8: Des

37、ign of structures for earthquake resistance.prEN 1999, Eurocode 9: Design of aluminium structures.Eurocode standards recognise the responsibility of regulatory authorities in each Member State and havesafeguarded their right to determine values related to regulatory safety matters at national level

38、wherethese continue to vary from State to State.Status and field of application of EurocodesThe Member States of the EU and EFTA recognise that EUROCODES serve as reference documents forthe following purposes: as a means to prove compliance of building and civil engineering works with the essentialr

39、equirements of Council Directive 89/106/EEC, particularly Essential Requirement N1 - Mechanicalresistance and stability - and Essential Requirement N2 - Safety in case of fire; as a basis for specifying contracts for construction works and related engineering services; as a framework for drawing up

40、harmonised technical specifications for construction products (ENsand ETAs).The Eurocodes, as far as they concern the construction works themselves, have a direct relationship withthe Interpretative Documents2referred to in Article 12 of the CPD, although they are of a different naturefrom harmonise

41、d product standards3. Therefore, technical aspects arising from the Eurocodes work needto be adequately considered by CEN Technical Committees and/or EOTA Working Groups working onproduct standards with a view to achieving full compatibility of these technical specifications with theEurocodes.The Eu

42、rocode standards provide common structural design rules for everyday use for the design of wholestructures and component products of both a traditional and an innovative nature. Unusual forms ofconstruction or design conditions are not specifically covered and additional expert consideration will be

43、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 interpretative documents forthe creation of the necessary links between the essential requirements and the mandates for harmonised ENs and ETAGs/ETAs.3According

44、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 indicatingclasses or levels for each requirement where necessary;b) indicate methods of correlating these classes or levels of requi

45、rement with the technical specifications, e.g. methods ofcalculation 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.The Eurocodes, de facto, play a similar role in the field

46、of the ER 1 and a part of ER 2.DIN EN 1991-1-2:2010-12 EN 1991-1-2:2002 + AC:2009 (E) 5 National standards implementing EurocodesThe national standards implementing Eurocodes will comprise the full text of the Eurocode (including anyannexes), as published by CEN, which may be preceded by a national

47、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 Eurocodefor national choice, known as Nationally Determined Parameters, to be used for the design of buildingsand civil engineering

48、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 given in the Eurocode; country specific data (geographical, climatic, etc), e.g. snow map; the procedure to be used where alternative p

49、rocedures are given in the Eurocode.It may also contain: decisions on the application of informative annexes and references to non-contradictory complementary information to assist the user to apply the Eurocode.Links between Eurocodes and harmonised technical specifications (ENs and ETAs) forproductsThere is a need for consistency between the harmonised technical specifications for construction productsand the technical rules for works4. Furthermore, all the information accompanying the CE Marking of theconstruction products which