BS_EN_1994-1-2-2005_欧洲法规4．复合钢和混凝土结构的设计．通用规则．结构防火设计.pdf

BRITISH STANDARD BS EN 1994-1-22005 Eurocode 4 Design of composite steel and concrete structures Part 1-2 General rules Structural fire design The European Standard EN 1994-1-22005 has the status of a British Standard ICS 13.220.50; 91.010.30; 91.080.10; 91.080.40 Licensed Copy x x, University of Glamorgan, Mon Apr 23 190452 GMT0000 2007, Uncontrolled Copy, c BSI BS EN 1994-1-22005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 December 2005 BSI 5 December 2005 ISBN 0 580 47235 3 National foreword This British Standard is the official English language version of EN 1994-1-22005. 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 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 The conflicting national standards will be withdrawn at the end of the coexistence period, after all the EN Eurocodes of a package are available. Following publication of the EN, there is a period of two years allowed for the national calibration period during which the national annex is issued, followed by a three year coexistence period. During the coexistence period Member States will be encouraged to adapt their national provisions to withdraw conflicting national rules before the end of the coexistence period. The Commission in consultation with Member States is expected to agree the end of the coexistence period for each package of Eurocodes. At the end of this coexistence period, the national standards will be withdrawn. In the case of BS EN 1994-1-22005, there are no corresponding national standards. The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/4, Composite structures, which has the responsibility to A list of organizations represented on this subcommittee can be obtained on request to its secretary. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests ined; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, page i, a blank page, the EN title page, pages 2 to 109 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy x x, University of Glamorgan, Mon Apr 23 190452 GMT0000 2007, Uncontrolled Copy, c BSI 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m BS EN 1994-1-22005 i 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 specific value for a factor, a specific level or class, a particular or a particular application rule if several are proposed in the EN. To enable EN 1994-1-2 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 consultation has taken place. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 does not of itself confer immunity from legal obligations. Licensed Copy x x, University of Glamorgan, Mon Apr 23 190452 GMT0000 2007, Uncontrolled Copy, c BSI w w w . b z f x w . c o m blank Licensed Copy x x, University of Glamorgan, Mon Apr 23 190452 GMT0000 2007, Uncontrolled Copy, c BSI 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1994-1-2 August 2005 ICS 13.220.50; 91.010.30; 91.080.10; 91.080.40Supersedes ENV 1994-1-21994 English Version Eurocode 4 - Design of composite steel and concrete structures - Part 1-2 General rules - Structural fire design Eurocode 4 - Calcul des structures mixtes acier-bton - Partie 1-2 Rgles gnrales - Calcul du comportement au feu Eurocode 4 - Bemessung und Konstruktion von Verbundtragwerken aus Stahl und Beton - Teil 1-2 Allgemeine Regeln Tragwerksbemessung im Brandfall This European Standard was approved by CEN on 4 November 2004. 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 national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists 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 notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN 1994-1-22005 E Licensed Copy x x, University of Glamorgan, Mon Apr 23 190452 GMT0000 2007, Uncontrolled Copy, c BSI w w w . b z f x w . c o m EN 1994-1-22005 E 2 Contents Page Foreword ...........................................................................................................................5 Background of the Eurocode programme..................................................................................................5 Status and field of application of Eurocodes .............................................................................................6 National Standards implementing Eurocodes ...........................................................................................6 Links between Eurocodes and harmonised technical specifications ENs and ETAs for products.........7 Additional ination specific for EN 1994-1-2 ........................................................................................7 National annex for EN 1994-1-2..............................................................................................................10 Section 1 General...........................................................................................................11 1.1 Scope............................................................................................................................................11 1.2 Normative references....................................................................................................................13 1.3 Assumptions..................................................................................................................................15 1.4 Distinction between Principles and Application Rules..................................................................15 1.5 Definitions .....................................................................................................................................15 1.5.1 Special terms relating to design in general .............15 1.5.2 Terms relating to material and products properties...........................................................16 1.5.3 Terms relating to heat transfer analysis ............................................................................16 1.5.4 Terms relating to mechanical behaviour analysis .............................................................16 1.6 Symbols ........................................................................................................................................16 Section 2 Basis of design..............................................................................................26 2.1 Requirements................................................................................................................................26 2.1.1 Basic requirements............................................................................................................26 2.1.2 Nominal fire exposure........................................................................................................26 2.1.3 Parametric fire exposure....................................................................................................27 2.2 Actions ..........................................................................................................................................27 2.3 Design values of material properties ............................................................................................27 2.4 Verification s .....................................................................................................................28 2.4.1 General..............................................................................................................................28 2.4.2 Member analysis................................................................................................................29 2.4.3 Analysis of part of the structure.........................................................................................30 2.4.4 Global structural analysis...................................................................................................31 Section 3 Material properties ........................................................................................31 3.1 General .........................................................................................................................................31 3.2 Mechanical properties...................................................................................................................31 3.2.1 Strength and deation properties of structural steel ....................................................31 3.2.2 Strength and deation properties of concrete..............................................................33 3.2.3 Reinforcing steels ..............................................................................................................35 3.3 Thermal properties........................................................................................................................36 3.3.1 Structural and reinforcing steels........................................................................................36 3.3.2 Normal weight concrete.....................................................................................................39 3.3.3 Light weight concrete.........................................................................................................41 3.3.4 Fire protection materials....................................................................................................42 3.4 Density..........................................................................................................................................42 Licensed Copy x x, University of Glamorgan, Mon Apr 23 190452 GMT0000 2007, Uncontrolled Copy, c BSI 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m EN 1994-1-22005 E 3 Section 4 Design procedures ..43 4.1 Introduction ...................................................................................................................................43 4.2 Tabulated data..............................................................................................................................44 4.2.1 Scope of application ..........................................................................................................44 4.2.2 Composite beam comprising steel beam with partial concrete encasement....................45 4.2.3 Composite columns...........................................................................................................47 4.3 Simple Calculation Models............................................................................................................51 4.3.1 General rules for composite slabs and composite beams ................................................51 4.3.2 Unprotected composite slabs ............................................................................................51 4.3.3 Protected composite slabs.................................................................................................52 4.3.4 Composite beams..............................................................................................................53 4.3.5 Composite columns...........................................................................................................61 4.4 Advanced calculation models .......................................................................................................64 4.4.1 Basis of analysis................................................................................................................64 4.4.2 Thermal response..............................................................................................................65 4.4.3 Mechanical response.........................................................................................................65 4.4.4 Validation of advanced calculation models........................................................................65 Section 5 Constructional details...................................................................................66 5.1 Introduction ...................................................................................................................................66 5.2 Composite beams.........................................................................................................................66 5.3 Composite columns ................................................................................