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1、BRITISH STANDARD BS EN 4 Incorporating Eurocode 5: Design of timber structures Part 1-1: General Common rules and rules for buildings ICS 91.010.30; 91.080.20 ? ? ? ? ? ? ? ? ? ? ? +A1:2008 1995-1-1:2004 corrigendum June 2006 Licensed Copy: London South Bank University, South Bank University, 02/02/
2、2009 03:29, Uncontrolled Copy, (c) BSI published under the authority of the Standards Policy and Strategy Committee on 15 December 2004 National foreword The structural Eurocodes are divided into packages by grouping Eurocodes for each of the main materials, concrete, steel, composite concrete and s
3、teel, timber, masonry and aluminium, which 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 The conflicting national standards will be withdrawn at the end of the coexistence period, after all the EN Eurocodes of a package are availab
4、le. Following publication of the EN, there is a period of 2 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 w
5、ithdraw conflicting national rules before the end of the coexistent 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 At the end of this coexistence period, the national standard(s) will be withdrawn. In th
6、e UK, the corresponding national standards are: BS 5268-2:2002, Structural use of timber Part 2: Code of practice for permissible stress design, materials and workmanship; BS 5268-3:1998, Structural use of timber Part 3: Code of practice for trussed rafter roofs; BS 5268-6.1:1996, Structural use of
7、timber Part 6: Code of practice for timber frame walls Section 6.1: Dwellings not exceeding four storeys; BS 5268-6.2:2002, Structural use of timber Part 6: Code of practice for timber frame walls Section 6.2: Buildings other than dwellings not exceeding four storeys; BS 5268-7.1:1989, Structural us
8、e of timber Part 7: Recommendations for the calculation basis for span tables Section 7.1: Domestic floor joists; BS 5268-7.2:1989, Structural use of timber Part 7: Recommendations for the calculation basis for span tables Section 7.2: Joists for flat roofs; BS 5268-7.3:1989, Structural use of timbe
9、r Part 7: Recommendations for the calculation basis for span tables Section 7.3: Ceiling joists; BS 5268-7.4:1989, Structural use of timber Part 7: Recommendations for the calculation basis for span tables Part 7.4: Ceiling binders; BS 5268-7.5:1990, Structural use of timber Part 7: Recommendations
10、for the calculation basis for span tables Section 7.5: Domestic rafters; BS 5268-7.6:1990, Structural use of timber Part 7: Recommendations for the calculation basis for span tables Section 7.6: Purlins supporting rafters; ISBN 978 0 580 65467 1 BSI 200 the text by tags. Tags indicating changes to C
11、EN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is !“indicated by . BS EN 1995-1-1:2004+A1:2008 This British Standard is the UK implementation of EN 1995-1-1:2004+A1:2008, incorporating corrigendum June 2006. It supersedes BS EN 1995-1-1:2004 The start an
12、d finish of text introduced or altered by amendment is indicated in which is withdrawn. This British Standard was Amd. No.DateComments 16499 Corrigendum No. 1 31 July 2006Implementation of CEN corrigendum June 2006. Modifications and 8.3.1.2 31Implementation of CEN amendment A1:2008 to 6.5.2, 8.2.2,
13、 8.3.1.1 Amendments/corrigenda issued since publication January 2009 9 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:29, Uncontrolled Copy, (c) BSI i The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering
14、 structures, to Subcommittee B/525/5, A list of organizations represented on this 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, therangeand possible choice will be given inthe normativetext, and a not
15、e 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 method or a particular application rule if several are proposed in the EN. To enable EN 1995-1-1 to be used in the UK, the NDPs will be published in a Nati
16、onal Annex, which will be made available by BSI in due course, after public consultation has taken place. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. BS 5268-7.7:1990, Structural use of timber Part 7: Rec
17、ommendations for the calculation basis for span tables Section 7.7: Purlins supporting sheeting or decking; and based on this transition period, these standards will be withdrawn on a date to be announced. Structural use of timber. 4BS EN 1995-1-1:200 +A1:2008 Compliance with a British Standard cann
18、ot confer immunity from legal obligations. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:29, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:29, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME E
19、UROPENNE EUROPISCHE NORM ICS 91.010.30; 91.080.20 Supersedes ENV 1995-1-1:1993 English version Eurocode 5: Design of timber structures - Part 1-1: General - Common rules and rules for buildings Eurocode 5: Conception et calcul des structures en bois - Partie 1-1 : Gnralits - Rgles communes et rgles
20、pour les btiments Eurocode 5: Bemessung und Konstruktion von Holzbauten - Teil 1-1: Allgemeines - Allgemeine Regeln und Regeln fr den Hochbau This European Standard was approved by CEN on 16 April 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the con
21、ditions 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 thre
22、e 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 Aus
23、tria, 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 STANDARD
24、IZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1995-1-1:2004: E June 2008 EN 1995-1-1:2004+A1 Incorp
25、orating corrigendum June 2006 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:29, Uncontrolled Copy, (c) BSI 2 Contents Page Foreword7 SECTION 1GENERAL 10 1.1SCOPE10 1.1.1Scope of EN 199510 1.1.2Scope of EN 1995-1-110 1.2NORMATIVE REFERENCES 11 1.3ASSUMPTIONS 13 1.4
26、DISTINCTION BETWEEN PRINCIPLES AND APPLICATION RULES 13 1.5TERMS AND DEFINITIONS 13 1.5.1General 13 1.5.2Additional terms and definitions used in this present standard13 1.6SYMBOLS USED INEN 1995-1-1 14 SECTION 2BASIS OF DESIGN 19 2.1REQUIREMENTS 19 2.1.1Basic requirements 19 2.1.2Reliability manage
27、ment19 2.1.3Design working life and durability 19 2.2PRINCIPLES OF LIMIT STATE DESIGN 19 2.2.1General 19 2.2.2Ultimate limit states 19 2.2.3Serviceability limit states 20 2.3BASIC VARIABLES 21 2.3.1Actions and environmental influences 21 2.3.1.1General21 2.3.1.2Load-duration classes21 2.3.1.3Service
28、 classes 22 2.3.2Materials and product properties 22 2.3.2.1Load-duration and moisture influences on strength22 2.3.2.2Load-duration and moisture influences on deformations22 2.4VERIFICATION BY THE PARTIAL FACTOR METHOD 24 2.4.1Design value of material property24 2.4.2Design value of geometrical dat
29、a 25 2.4.3Design resistances 25 2.4.4Verification of equilibrium (EQU) 25 SECTION 3MATERIAL PROPERTIES 26 3.1GENERAL26 3.1.1Strength and stiffness parameters 26 3.1.2Stress-strain relations 26 3.1.3Strength modification factors for service classes and load-duration classes 26 3.1.4Deformation modifi
30、cation factors for service classes 26 3.2SOLID TIMBER 26 3.3GLUED LAMINATED TIMBER 27 3.4LAMINATED VENEER LUMBER (LVL) 28 3.5WOOD-BASED PANELS 29 3.6ADHESIVES 29 3.7METAL FASTENERS 29 SECTION 4DURABILITY 30 4.1RESISTANCE TO BIOLOGICAL ORGANISMS 30 4.2RESISTANCE TO CORROSION 30 SECTION 5BASIS OF STRU
31、CTURAL ANALYSIS 31 5.1GENERAL31 EN 1995-1-1:2004 A1:2008 (E) + BS EN 1995-1-1:2004+A1:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:29, Uncontrolled Copy, (c) BSI 3 5.2MEMBERS31 5.3CONNECTIONS 31 5.4ASSEMBLIES 32 5.4.1General 32 5.4.2Frame structures32 5.4.3S
32、implified analysis of trusses with punched metal plate fasteners 33 5.4.4Plane frames and arches34 SECTION 6ULTIMATE LIMIT STATES 36 6.1DESIGN OF CROSS-SECTIONS SUBJECTED TO STRESS IN ONE PRINCIPAL DIRECTION 36 6.1.1General 36 6.1.2Tension parallel to the grain 36 6.1.3Tension perpendicular to the g
33、rain36 6.1.4Compression parallel to the grain36 6.1.5Compression perpendicular to the grain36 6.1.6 6.1.7Shear 6.1.8Torsion 6.2DESIGN OF CROSS-SECTIONS SUBJECTED TO COMBINED STRESSES 6.2.1General 6.2.2Compression stresses at an angle to the grain 6.2.3 6.2.4Combined bending and axial compression 6.3
34、STABILITY OF MEMBERS 6.3.1General 6.3.2 6.3.3Beams subjected to either bending or combined bending and compression 6.4DESIGN OF CROSS-SECTIONS IN MEMBERS WITH VARYING CROSS-SECTION OR CURVED 6.4.1 6.4.2Single tapered beams 6.4.3 6.5NOTCHED MEMBERS 6.5.1General 6.5.2Beams with a notch at the support
35、6.6SYSTEM STRENGTH SECTION 7SERVICEABILITY LIMIT STATES 7.1JOINT SLIP 7.2LIMITING VALUES FOR DEFLECTIONS OF BEAMS 7.3VIBRATIONS 7.3.1General 7.3.2Vibrations from machinery 7.3.3Residential floors SECTION 8CONNECTIONS WITH METAL FASTENERS 8.1GENERAL 8.1.1Fastener requirements 8.1.2Multiple fastener c
36、onnections 8.1.3Multiple shear plane connections 8.1.4Connection forces at an angle to the grain 8.1.5Alternating connection forces 8.2LATERAL LOAD-CARRYING CAPACITY OF METAL DOWEL-TYPE FASTENERS 8.2.1General 8.2.2 8.2.3 8.3NAILED CONNECTIONS 8.3.1 +EN 1995-1-1:2004 A1:2008 (E) Bending 33838 38 39 4
37、0 40 Combined bending and axial tension40 40 41 41 Columns subjected to either compression or combined compression and bending41 42 SHAPE 44 General 44 44 Double tapered, curved and pitched cambered beams5 49 94 49 50 52 52 52 53 53 53 53 56 56 56 56 56 56 58 58 58 Timber-to-timber and panel-to-timb
38、er connections58 Steel-to-timber connections 60 Laterally loaded nails 62 62 4 40 BS EN 1995-1-1:2004+A1:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:29, Uncontrolled Copy, (c) BSI 4 8.3.1.1 8.3.1.2Nailed timber-to-timber connections 8.3.1.3Nailed panel-to-t
39、imber connections 8.3.1.4Nailed steel-to-timber connections 8.3.2Axially loaded nails 8.3.3Combined laterally and axially loaded nails 8.4STAPLED CONNECTIONS 8.5BOLTED CONNECTIONS 8.5.1Laterally loaded bolts 8.5.1.1General and bolted timber-to-timber connections 8.5.1.2Bolted panel-to-timber connect
40、ions 8.5.1.3Bolted steel-to-timber connections 8.5.2Axially loaded bolts 8.6DOWELLED CONNECTIONS 8.7SCREWED CONNECTIONS 8.7.1Laterally loaded screws 8.7.2Axially loaded screws 8.7.3Combined laterally and axially loaded screws 8.8CONNECTIONS MADE WITH PUNCHED METAL PLATE FASTENERS 8.8.1General 8.8.2P
41、late geometry 8.8.3 8.8.4 8.8.5Connection strength verification 8.8.5.1Plate anchorage capacity 8.8.5.2 8.9SPLIT RING AND SHEAR PLATE CONNECTORS 8.10TOOTHED-PLATE CONNECTORS SECTION 9COMPONENTS AND ASSEMBLIES 9.1COMPONENTS 9.1.1Glued thin-webbed beams 9.1.2Glued thin-flanged beams 9.1.3Mechanically
42、jointed beams 9.1.4Mechanically jointed and glued columns 9.2ASSEMBLIES 9.2.1Trusses 9.2.2Trusses with punched metal plate fasteners 9.2.3Roof and floor diaphragms 9.2.3.2Simplified analysis of roof and floor diaphragms. 9.2.4 9.2.4.1 9.2.4.2 9.2.4.3 9.2.4.3.2Design procedure 9.2.5.1 9.2.5.2Single m
43、embers in compression 9.2.5.3Bracing of beam or truss systems SECTION 10 STRUCTURAL DETAILING AND CONTROL 10.1GENERAL 10.2MATERIALS 10.3G 10.4CONNECTIONS WITH MECHANICAL FASTENERS 10.4.1 10.4.2Nails 10.4.3 +EN 1995-1-1:2004 A1:2008 (E) General62 64 67 67 67 69 71 71 69 74 74 71 72 73 73 73 74 77 77
44、77 77 Plate strength properties77 Plate anchorage strengths78 78 78 Plate capacity80 81 84 87 87 87 89 90 91 91 91 92 93 9.2.3.1General93 93 Wall diaphragms94 General Simplified analysis of wall diaphragms Method A 94 94 Simplified analysis of wall diaphragms Method B 97 9.2.4.3.1Construction of wal
45、ls and panels to meet the requirements of the simplified analysis97 98 9.2.5Bracing 100 General100 100 101 103 103 103 LUED JOINTS 103 103 General 103 103 Bolts and washers 103 BS EN 1995-1-1:2004+A1:2008 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:29, Uncontrol
46、led Copy, (c) BSI 5 10.4.4Dowels 10.4.5 10.5ASSEMBLY 10.6TRANSPORTATION AND ERECTION 10.7CONTROL 10.8S 10.8.1 10.8.2Wall diaphragms 10.9.1Fabrication 10.9.2Erection ANNEX A(INFORMATIVE): BLOCK SHEAR AND PLUG SHEAR FAILURE AT MULTIPLE DOWEL-TYPE STEEL-TO-TIMBER CONNECTIONS ANNEX B(INFORMATIVE): MECHA
47、NICALLY JOINTED BEAMS B.1S B.1.1Cross-sections B.1.2Assumptions B.1.3Spacings B.1.4Deflections resulting from bending moments B.2E B.3N B.4M B.5F C.1GENERAL C.1.1Assumptions C.1.2Load-carrying capacity C.2M C.2.1Effective slenderness ratio C.2.2Load on fasteners C.2.3Combined loads C.3S C.3.1Assumpt
48、ions C.3.2Axial load-carrying capacity C.3.3Load on fasteners, gussets or packs C.4.1Assumptions C.4.2Load-carrying capacity ANNEX D (INFORMATIVE): BIBLIOGRAPHY +EN 1995-1-1:2004 A1:2008 (E) 104 Screws 104 104 10 Floor and roof diaphragms105 105 PECIAL RULES FOR DIAPHRAGM STRUCTURES 105 106 10.9SPEC
49、IAL RULES FOR TRUSSES WITH PUNCHED METAL PLATE FASTENERS 106 106 106 108 110 IMPLIFIED ANALYSIS 110 110 110 110 110 FFECTIVE BENDING STIFFNESS 112 ORMAL STRESSES 112 AXIMUM SHEAR STRESS 112 ASTENER LOAD 112 ANNEX C(INFORMATIVE): BUILT-UP COLUMNS 114 114 114 114 ECHANICALLY JOINTED COLUMNS 114 114 114 115 PACED COLUMNS WITH PACKS OR GUSSETS 115 115 116 117 C.4LATTICE COLUMNS W