DIN EN 1993-1-2 NA-2010 National Annex - Nationally determined parameters - Eurocode 3 Design of steel structures - Part 1-2 General rules - Structural fire design《国家附录 国家制定参数 欧洲规范.pdf

1、December 2010 Translation by DIN-Sprachendienst.English price group 6No 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).IC

2、S 13.220.50; 91.010.30; 91.080.10!$loi“1737670www.din.deDDIN EN 1993-1-2/NANational Annex Nationally determined parameters Eurocode 3: Design of steel structures Part 1-2: General rules Structural fire designEnglish translation of DIN EN 1993-1-2/NA:2010-12Nationaler Anhang National festgelegte Para

3、meter Eurocode 3: Bemessung und Konstruktion von Stahlbauten Teil 1-2: AllgemeineRegeln Tragwerksbemessung fr den BrandfallEnglische bersetzung von DIN EN 1993-1-2/NA:2010-12Annexe Nationale Paramtres dtermins au plan national Eurocode 3: Calcul des structures en acier Partie 1-2: Rgles gnrales Calc

4、ul ducomportement au feuTraduction anglaise de DIN EN 1993-1-2/NA:2010-12www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.8 02.12 DIN EN 1993-1-2/NA:2010-12 2 A comma is used as the decimal marker. Contents Page Foreword 3 NA.1 Scop

5、e 4 NA.2 National provisions for the application of DIN EN 1993-1-2:2010-12 .4 NA.2.1 General 4 NA.2.2 National provisions4 NCI Annex AA (normative) Characteristic values for fire protection materials 7 NCI Bibliography .8 DIN EN 1993-1-2/NA:2010-12 3 Foreword This document has been prepared by Work

6、ing Committee NA 005-52-22 AA Konstruktiver baulicher Brand-schutz (which deals with some fields covered by CEN/TC 250) of the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee). This document is the National Annex to DIN EN 1993-1-2:2010-12 Eurocode 3: Design of concrete

7、structures Part 1-2: General rules Structural fire design. European Standard EN 1993-1-2:2005 allows national safety parameters, referred to as Nationally Determined Parameters (NDPs), to be specified for a number of points. The NDPs cover alternative verification methods, the provision of individua

8、l values and the selection of classes from designated classification systems. The relevant parts of the text are identified in the European Standard by references to the possibility of national choice and are listed in Subclause NA.2.1. This National Annex also includes non-contradictory complementa

9、ry information (NCI) that is permitted by the European Commissions Guidance Paper L “Application and use of Eurocodes”, and provisions for the application of DIN EN 1993-1-2:2010-12. The provisions of this National Annex are based on investigations made and on the results of fire design analyses in

10、accordance with DIN 4102-4 and are intended to maintain the national safety level in terms of fire safety. This National Annex is an integral part of DIN EN 1993-1-2:2010-12. Annex AA below is normative. DIN EN 1993-1-2/NA:2010-12 4 NA.1 Scope This National Annex contains national provisions relatin

11、g to the structural fire design of steel structures that are to be taken into consideration when applying DIN EN 1993-1-2:2010-12 in Germany. This National Annex is only valid in conjunction with DIN EN 1993-1-2:2010-12. NA.2 National provisions for the application of DIN EN 1993-1-2:2010-12 NA.2.1

12、General DIN EN 1993-1-2:2010-12 refers to the option of choosing Nationally Determined Parameters (NDPs) at the following places in the text: 2.3 (1) 2.3 (2) 4.1 (2) 4.2.3.6 (1) 4.2.4 (2) Translators note: For ease of reference, the texts of relevant notes taken from DIN EN 1992-2-1 are given in ita

13、lics in each case above the provisions of this National Annex (which are printed in upright font). In addition, NA.2.2 includes non-contradictory complementary information for the application of DIN EN 1993-1-2:2010-12. This information is preceded by the letters “NCI”. NA.2.2 National provisions In

14、 the following, the clauses are numbered as in DIN EN 1993-1-2:2010-12. NCI re 1.2 Normative references DIN 4102-4:1994-03, Fire behaviour of building materials and elements Overview and design of classified building materials, elements and components DIN 4102-4/A1, Fire behaviour of building materi

15、als and elements Overview and design of classified building materials, elements and components (Amendment A1) DIN EN 1991-1-2/NA:201012, National Annex Nationally determined parameters Eurocode 1: Actions on structures Part 1-2: General actions Actions on structures exposed to fire DIN EN 1993-1-2:2

16、010-12, National Annex Nationally determined parameters Eurocode 3: Design of steel structures Part 1-2: General rules Structural fire design NDP re 2.3 (1) Design values of thermal material properties Re “NOTE For the mechanical properties of steel, the partial factor for the fire situation is give

17、n in the National Annex. The use of M,fi= 1,0 is recommended.” The recommended value applies. DIN EN 1993-1-2/NA:2010-12 5 NDP re 2.3 (2) Design values of thermal material properties Re “NOTE For the thermal properties of steel, the partial factor for the fire situation is given in the National Anne

18、x. The use of M,fi= 1,0 is recommended.” The recommended value applies. NDP re 4.1 (2) Structural fire design General Re “NOTE The decision on the use of advanced calculation methods in a country may be found in its National Annex.” Advanced calculation methods may be used. When analysing structures

19、 and parts of structures for their fire behaviour by advanced calculation methods using computing programmes, such programmes should be validated. Annex CC of DIN EN 1991-1-2/NA:2010-12 provides some suitable validation methods. NDP re 4.2.3.6 (1) Members with Class 4 cross sections Re “NOTE 2 The l

20、imit temperature critmay be chosen in the National Annex. The value crit= 350 C is recommended.” For the sake of simplification, the loadbearing function of a member with a Class 4 cross section may be assumed to be maintained after a time t in a given fire, if the steel temperature aat this time re

21、aches a value of crit= 350 C or greater at no point of the cross section. NDP re 4.2.4 (2) Critical temperature (Table 4.1) Re “NOTE The National Annex may give default values for critical temperatures.” The critical temperatures specified as a function of the utilization factor 0in Table 4.1 may be

22、 used. NCI re 3.4.3 Fire protection materials Characteristic values for a number of fire protection materials are given in Annex AA below. DIN EN 1993-1-2/NA:2010-12 6 NCI re Annex C Stainless steel The characteristic values and design rules given in Annex C may only be used in the design of members

23、 made of one of the following grades of steel (material numbers): 1.4301 1.4401 1.4571 1.4003 1.4462. When designing thin-walled members with a Class 4 cross section, the calculation models described in Annex E shall additionally be considered. NCI re Annex D Joints As a departure from the specifica

24、tions of DIN EN 1993-1-2:2010-12, 4.2.1, paragraphs (5) and (6), Annex D may be used in the design of bolted and welded joints (see Bibliography to this National Annex for suitable steel grades). Preloaded, slip-resistant bolted joints shall be assumed as having slipped in a fire and as being of the

25、 bearing type only, i.e. as behaving like friction-grip connections. When designing the bearing resistance of bolted joints subjected to combined shear and tension, analysis of the bolts may be made in accordance with DIN EN 1993-1-8:2010-12, Table 3.4, using the ultimate shear and tensile forces re

26、duced by the reduction factors given in Annex D. NCI re Annex E Class 4 cross sections As a departure from the simplified method given in DIN EN 1993-1-2:2010-12, 4.2.3.6 (1), members of a Class 4 cross section may be designed using the calculation models described in Annex E. DIN EN 1993-1-2/NA:201

27、0-12 7 NCI Annex AA (normative) Characteristic values for fire protection materials In the absence of any other characteristic values determined as a function of temperature, fire protection materials shall be selected with regard to their thermal properties (cf. DIN EN 1993-1-2:2010-12, 3.4.3) in a

28、ccordance with Table AA.1. Table AA.1 Thermal properties of fire protection materials Line 1 2 3 Fire protection material Thermal conductivity pSpecific heat cpDensity pW/(m K) J/(kg K) kg/m31 Plaster coatings: Mortar (including vermiculite and perlite mortar) as in DIN 4102-4:1994-03 0,12 1 100 550

29、 2 Panels and boards: Fire resistant gypsum plasterboard as in DIN 4102-4:1994-03 0,20 1 700 945 The characteristic values given in Table AA.1 apply only up to steel temperatures of 700 C if the design is made in accordance with DIN EN 1993-1-2:2010-12, 4.2.5.2. When using materials as specified in

30、Table AA.1, the relevant specifications of DIN 4102-4:1994-03 or the stipulations of the relevant bauaufsichtlicher Verwendbarkeitsnachweis (i.e. proof of suitability in the form of general building inspectorate approvals or test certificates issued by the building inspectorate) shall be complied wi

31、th. DIN EN 1993-1-2/NA:2010-12 8 NCI Bibliography DASt-Richtlinie (DASt Code of practice) 009 Stahlsortenauswahl fr geschweite Stahlbauten (Recommendations relating to the selection of steel quality groups for welded steel structures)1)1) Obtainable from Stahlbau Verlags- und Service GmbH, Sohnstrae 65, 40237 Dsseldorf or Beuth Verlag GmbH, 10772 Berlin, Germany.