DD_ENV_1994-1-1-1994_欧洲规程_4复合钢和混凝土结构设计．和英国国家应用文件一块实用的建筑物的一般规则和规则.pdf

DRAFT FOR DEVELOPMENT DD ENV 1994-1-11994 Eurocode 4 Design of composite steel and concrete structures Part 1.1 General rules and rules for buildings together with United Kingdom National Application Document UDC 624.92.016624.07 DD ENV 1994-1-11994 This Draft for Development, having been prepared under the direction of the Technical Sector Board for Building and Civil Engineering B/-, was published under the authority of the Standards Board and comes into effect on 15 May 1994 BSI 05-2000 The following BSI reference relates to the work on this Draft for Development Committee reference B/525/4 ISBN 0 580 22797 9 Cooperating organizations The European Committee for Standardization CEN, under whose supervision this European Prestandard was prepared, comprises the national standards organizations of the following countries AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y Certificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments w w w . b z f x w . c o m DD ENV 1994-1-11994 BSI 05-2000i Contents Page Cooperating organizationsInside front cover National forewordii Text of National Application Documentiii Foreword2 Text of ENV 1994-1-19 National annex NA inative Committees responsibleInside back cover w w w . b z f x w . c o m DD ENV 1994-1-11994 ii BSI 05-2000 National foreword This publication comprises the English language version of ENV 1994-1-11992 Eurocode 4 Design of composite steel and concrete structures Part 1.1 General rules and rules for buildings, as published by the European Committee for Standardization CEN, plus the National Application Document to be used with the ENV in the design of buildings to be constructed in the United Kingdom. ENV 1994-1-11992 results from a programme of work sponsored by the European Commission to make available a common set of rules for the design of building and civil engineering works. An ENV is made available for provisional application, but does not have the status of a European Standard. The aim is to use the experience gained to modify the ENV so that it can be adopted as a European Standard. The values for certain parameters in the ENV Eurocodes may be set by CEN members so as to meet the requirements of national regulations. These parameters are designated by P in the ENV. During the ENV period of validity, reference should be made to the supporting documents listed in the National Application Document NAD. The purpose of the NAD is to provide essential ination, particularly in relation to safety, to enable the ENV to be used for buildings constructed in the UK. The NAD takes precedence over corresponding provisions in the ENV. The Building Regulations 1991, Approved Document A 1992, published December 1991 draws designers’ attention to the potential use of ENV Eurocodes as an alternative approach to Building Regulation compliance. ENV 1994-1-11992 has been thoroughly examined over a period of several years and is considered to offer such an alternative approach, when used in conjunction with the NAD. Compliance with ENV 1994-1-11992 and the NAD does not in itself confer immunity from legal obligations. Users of this document are invited to comment on its technical content, ease of use and any ambiguities or anomalies. These comments will be taken into account when preparing the UK national response to CEN on the question of whether the ENV can be converted to an EN. Comments should be sent in writing to BSI, 2 Park Street, London W1A 2BS, quoting the document reference, the relevant clause and, where possible, a proposed revision, within 2 years of the issue of this document. Summary of pages This document comprises a front cover, an inside front cover, pages i to xxii, the ENV title page, pages 2 to 134, an inside back cover and a back cover. This standard has been updated see copyright date and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. w w w . b z f x w . c o m DD ENV 1994-1-11994 BSI 05-2000iii National Application Document for use in the UK with ENV 1994-1-11992 w w w . b z f x w . c o m DD ENV 1994-1-11994 iv BSI 05-2000 Contents of National Application Document Page Introductionv 1Scopev 2Referencesv 3Partial safety factors, combination factors and other valuesv 4Loading codesviii 5Reference standardsix 6Additional recommendationsxiii Annex A normative General requirements for structural integrityxvi Annex B normative Application rules for composite columns in simple framingxvii Table 1 Partial safety factors factorsv Table 2 Combination factors factors for persistent and transient design situationsvii Table 3 Combination factors for accidental design situationsvii Table 4 Boxed valuesviii Table 5 References in EC4 to other codes and standardsix List of referencesxx w w w . b z f x w . c o m DD ENV 1994-1-11994 BSI 05-2000v Introduction This National Application Document NAD has been prepared under the direction of the Civil Engineering and Technical Sector Board for Buildings and Civil Engineering. It has been developed from a a textual examination of ENV 1994-1-11992; b calibration against UK practice, supporting standards and test data; c trial calculations. 1 Scope This NAD provides ination required to enable ENV 1994-1-11992 EC4-1.1 to be used for the design of buildings to be constructed in the UK. 2 References 2.1 Normative references This National Application Document incorporates, by reference, provisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publications are listed on page xx. Subsequent amendments to, or revisions of, any of these publications apply to this National Application Document only when incorporated in it by updating or revision. 2.2 Inative references This National Application Document refers to other publications that provide ination or guidance. Editions of these publications current at the time of issue of this standard are listed on page xx, but reference should be made to the latest editions. 3 Partial safety factors, combination factors and other values a The values for partial safety factors should be those given in Table 1 of this NAD. b The values for combination factors should be those given in Table 2 and Table 3 of this NAD. c The values for the boxed factors should be those given in Table 4 of this NAD. Table 1 Partial safety factors factors Reference in EC4-1.1 DefinitionSymbolCondition Value Boxed EC4UK 2.3.2.2 1Partial safety factor for accidental actions AAccidental1.001.05 2.3.2.2 3Partial safety factor for permanent actions in accidental design situations GAFavourable1.000.90 GAUnfavourable1.001.05 2.3.3.1 1Partial safety factors for permanent actions G.infFavourable1.001.00 G.supUnfavourable1.351.35 2.3.3.1 1Partial safety factors for variable actions Q.infFavourable0.000.00 Q.supUnfavourable1.501.50 Q.sup2 or more combined1.501.50 2.3.3.1 3Partial safety factors for permanent actions G.infFavourable part1.101.10 G.supUnfavourable part1.351.35 G.infFavourable and unfavourable parts 1.001.00 w w w . b z f x w . c o m DD ENV 1994-1-11994 vi BSI 05-2000 Table 1 Partial safety factors factors Reference in EC4-1.1 DefinitionSymbolCondition Value Boxed EC4UK 2.3.3.2 1Partial safety factors for structural steel aFundamental1.101.05 aAccidental except earthquakes 1.001.05 2.3.3.2 1Partial safety factors for concrete cFundamental1.501.50 cAccidental except earthquakes 1.301.30 2.3.3.2 1Partial safety factors for steel reinforcement sFundamental1.151.15 sAccidental except earthquakes 1.001.00 2.3.3.2 1Partial safety factors for profiled steel sheeting apFundamental1.101.05 apAccidental except earthquakes 1.001.05 2.3.3.2 2Partial safety factors for elastic mechanical properties MGeneral1.001.00 2.3.3.2 2Partial safety factors for non-mechanical coefficients MGeneral1.001.00 4.1.1 5Partial safety factors for the buckling resistance of structural steel RdAccidental combinations1.001.05 4.4.1.4 3Partial safety factors for steel RdResistance of Class 4 cross sections 1.101.05 4.6.3 1Partial safety factors for steel RdResistance of Class 1 or 2 cross sections 1.101.05 RdResistance of Class 3 cross sections 1.101.05 4.8.3.2 1Partial safety factors for steel MaFor a column length with1.101.05 Ma k 0.2 or Nsd/Ncr k 0.1 otherwise 1.101.05 4.8.3.5 1Partial safety factors for the elastic flexural stiffness of concrete c1.351.35 6.3.2.1Partial safety factors for shear studs vUltimate limit state1.251.25 6.3.7Partial safety factors for angle connectors in solid slabs vUltimate limit state1.251.25 6.5.2.1 1Partial safety factors for friction grip bolts v1.251.35 7.6.1.3 2Partial safety factors for slabs with mechanical or frictional interlock vsFor use in equation 7.61.251.25 10.2.5 1Partial safety factor for shear connectors vTest uation1.251.25 w w w . b z f x w . c o m DD ENV 1994-1-11994 BSI 05-2000vii Table 1 Partial safety factors factors Table 2 Combination factors factors for persistent and transient design situations Table 3 Combination factors for accidental design situations Reference in EC4-1.1 DefinitionSymbolCondition Value Boxed EC4UK E.2 5Partial safety factor for shear connection vShear strength1.251.25 E.4 4Partial safety factor for shear connection vEnd anchorage1.251.25 Variable actiona 012 Imposed floor loads Dwellings0.50.40.2 Office and stores0.70.60.3 Parking0.70.70.6 Wind loads0.70.20 Imposed roof loadsb0.70.20 Crane loadscVertical0.70.60.3 Horizontal 0.9 Vertical and Horizontal a For the purposes of EC4-1.1 these four categories of variable action should be treated as separate and independent variable actions. b Local drifting of snow on roofs should be treated as an accidental action [see 6.1.1 c]. c The most onerous of the three specified alternatives should be treated as a single variable action. Variable action 1 or 2 for use in A.3 and A.4 Imposed floor loadsDwellings0.35a Offices0.35a Stores1.0 Parking0.35a Wind loadsb0.35 Imposed roof loads0.35 Crane loadscVertical1.00 Horizontal0.00 a Where the variable action is of a persistent or quasi-permanent nature, the factor should be taken as 1.0. b The full value obtained from CP 3 Chapter V-2 should be multiplied by 0.35 c The values given in this table assume that the crane is stationary. The vertical load to which the combination factor is applied is the static load value. w w w . b z f x w . c o m DD ENV 1994-1-11994 viii BSI 05-2000 Table 4 Boxed values 4 Loading codes The loading codes to be used are Reference in EC4-1.1 DefinitionSymbolCondition Value Boxed EC4UK 3.1.3 2Long-term free shrinkage strain from setting of the concrete dry environments csNormal-weight concrete 325 10–6325 10–6 csLight-weight concrete500 10–6500 10–6 3.1.3 2Long-term free shrinkage strain from setting of the concrete other environments and in filled members csNormal-weight concrete 200 10–6200 10–6 csLight-weight concrete300 10–6300 10–6 4.8.3.13 6 reduction in the partial safety factor for the favourable component Nsd 20 30 5.3.2 2Minimum tensile strength of concrete fcte3 N/mm23 N/mm2 10.2.5 1Reduction for the characteristic resistance PRk 10 10 10.2.5 4Reduction for the characteristic slip capacity 10 10 10.3.1.5 5Reduction for the characteristic values m and k 10 10 10.3.2.5Design resistance of composite slab a0.750.75 b0.50.5 c0.750.75 E.2 4Reduction for the characteristic shear strength 10 10 E.4 3Reduction for the characteristic resistance of the end anchorage 10 10 E.5 4Lower limit on bending resistance 10 10 BS 6481964Schedule of weights of building materials BS 6399Design loading for buildings BS 6399-11984Code of practice for dead and imposed loads BS 6399-31988Code of practice for imposed roof loads CP3Code of basic data for the design of buildings CP3Chapter VLoading CP3Chapter V-21972Wind loads BS 5950Structural use of steelwork in building BS 5950-3Design in composite construction BS 5950-3.11990Code of practice for design of simple and continuous composite beams Clause 2.2 Loading w w w . b z f x w . c o m DD ENV 1994-1-11994 BSI 05-2000ix In using the above documents with EC4-1.1 the following modifications should be noted a The imposed floor loads of a building should be treated as one variable action to which the reduction factors given in BS 6399-11984 are applicable. b The characteristic wind loading should be taken as 90 of the value obtained from CP3Chapter V-21972. 5 Reference standards The supporting standards to be used, including materials specifications and standards for construction are listed in Table 5. Table 5 References in EC4-1.1 to other codes and standards BS 5950-41993Code of practice for design of composite slabs with profiled steel sheeting Clause 2.2 Loading BS 59751982Code of practice for falsework Section 4 Loads applied to falsework Reference in EC4-1.1 Document referred to Document title or subject areaStatusUK document 1.1.1 3Eurocode 2Design of concrete structures Part 1. General rules and rules for buildings ENV 1992-1-1DD ENV 1992-1-1 See note 1 Part 1A Plain or lightly-reinforced concrete structures DraftBS 8110-1, and section 8 of BS 8110-21985 Part 1B Precast concrete structuresDraftBS 8110-1 Part 1C The use of lightweight aggregate concrete DraftSection 5 of BS 8110-21985 Part 1D The use of unbonded and external prestressing tendons No draftSection 8 of BS 8110-11985 Part 10. Fire resistance of concrete structures DraftBS 8110-1 and section 4 of BS 8110-21985 1.1.1 3Eurocode 3 Design of steel structures Part 1.1 General rules and rules for buildings ENV 1993-1-1DD ENV 1993-1-1 See note 1 Part 1.2 Fire resistanceDraftSection 7 of BS 5950-41993 BS 5950-8 Part 1.3 Cold ed thin gauge members and sheeting DraftBS 5950-4, BS 5950-6 See note 6 and BS 5950-7 1.1.1 4Eurocode 8Design of structures for earthquake resistance In preparation 1.1.1 5Eurocode 1Basis of design and actions on structures In prepara