EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT prEN 1993-1-8
December 2003
ICS Will superde ENV 1993-1-1:1992
English version
Eurocode 3: Design of steel structures - Part 1-8: Design of
joints
Eurocode 3: Calcul des structures en acier - Partie 1-8:
Calcul des asmblages Eurocode 3: Bemessung und Konstruktion von Stahlbauten - Teil 1-8: Bemessung von Anschlüsn
This draft European Standard is submitted to CEN members for formal vote. It has been drawn up by the Technical Committee CEN/TC 250.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.
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E N O R M A LI S A T I O N
EUR OPÄIS C HES KOM ITEE FÜR NOR M UNG
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worldwide for CEN national Members.
Ref. No. prEN 1993-1-8:2003 E
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1.1 Scope
6 1.2 Distinction between Principles and Application Rules 6 1.3 Definitions 6 1.4 Symbols
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2.1 Assumptions
13 2.2 General requirements
13 2.3 Applied forces and moments 13 2.4 Resistance of joints 13 2.5 Design assumptions
14 2.6 Joints loaded in shear subject to impact, vibration and/or load reversal 14 2.7 Eccentricity at interctions 14 2.8 References
15
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3.1 Bolts, nuts and washers 18 3.1.1 General 18 3.1.2 Preloaded bolts 18 3.2 Rivets
18 3.3 Anchor bolts
18 3.4 Categories of bolted connections 18 3.4.1 Shear connections 18 3.4.2 Tension connections
19 3.5 Positioning of holes for bolts and rivets 20 3.6 Design resistance of individual fasteners 21 3.6.1 Bolts and rivets 21 3.6.2 Injection bolts 25 3.7 Group of fasteners 26 3.8 Long joints
26 3.9 Slip-resistant connections using 8.8 or 10.9 bolts 27 3.9.1 Design Slip resistance 27 3.9.2 Combined tension and shear 28 3.9.3 Hybrid connections 28 3.10 Deductions for fastener holes 28 3.10.1 General
28 3.10.2 Design for block tearing
29 3.10.3 Angles connected by one leg and other unsymmetrically connected members in tension 30 3.10.4 Lug angles 31 3.11 Prying forces
31 3.12 Distribution of forces between fasteners at the ultimate limit state 31 3.13 Connections made with pins 32 3.13.1 General
32 3.13.2 Design of pins
32 :HOGHG FRQQHFWLRQV 4.1 General
35 4.2 Welding consumables 35 4.3 Geometry and dimensions 35 4.3.1 Type of weld 35 4.3.2 Fillet welds 35 4.3.3 Fillet welds all round 36 4.3.4 Butt welds 36 4.3.5 Plug welds 37 4.3.6 Flare groove welds
38
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4.4 Welds with packings
38 4.5 Design resistance of a fillet weld 38 4.5.1 Length of welds 38 4.5.2 Effective throat thickness 38 4.5.3 Design Resistance of fillet welds 39 4.6 Design resistance of fillet welds all round 41 4.7 Design resistance of butt welds 41 4.7.1 Full penetration butt welds 41 4.7.2 Partial penetration butt welds 41 4.7.3 T-butt joints
41 4.8 Design resistance of plug welds 42 4.9 Distribution of forces
42 4.10 Connections to unstiffened flanges 43 4.11 Long joints
44 4.12 Eccentrically loaded single fillet or single-sided partial penetration butt welds 44 4.13 Angles connected by one leg 45 4.14 Welding in cold-formed zones 45
$QDO\VLV FODVVLILFDWLRQ DQG PRGHOOLQJ 5.1 Global analysis 47 5.1.1 General 47 5.1.2 Elastic global analysis 47 5.1.3 Rigid-plastic global analysis 48 5.1.4 Elastic- plastic global analysis 48 5.1.5 Global analysis of lattice girders 49 5.2 Classification of joints 51 5.2.1 General 51 5.2.2 Classification by stiffness 51 5.2.3 Classification by strength
52 5.3 Modelling of beam-to-column joints
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6.1 General 57 6.1.1 Basis 57 6.1.2 Structural properties 57 6.1.3 Basic components of a joint 58 6.2 Design Resistance 62 6.2.1 Internal forces 62 6.2.2 Shear forces 62 6.2.3 Bending moments 63 6.2.4 Equivalent T-stub in tension 64 6.2.5 Equivalent T-stub in compression 67 6.2.6 Design Resistance of basic components 68 6.2.7 Design Moment resistance of beam-to-column joints and splices 81 6.2.8 Design Resistance of column bas with ba plates 86 6.3 Rotational stiffness 89 6.3.1 Basic model 89 6.3.2 Stiffness coefficients for basic joint components 91 6.3.3 End-plate connections with two or more bolt-rows in tension 94 6.3.4 Column bas 95 6.4 Rotation capacity 96 6.4.1 General 96 6.4.2 Bolted joints 97 6.4.3 Welded Joints
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7.1 General 98 7.1.1 Scope 98 7.1.2 Field of application 98 7.2 Design 100 7.2.1 General 100 7.2.2 Failure modes for hollow ction connections 100 7.3 Welds 104 7.3.1 Design resistance
104 7.4 Welded joints between CHS members 105 7.4.1 General 105 7.4.2 Uniplanar joints 105 7.4.3 Multiplanar joints
112 7.5 Welded joints between CHS or RHS brace members and RHS chord members 113 7.5.1 General 113 7.5.2 Uniplanar joints 114 7.5.3 Multiplanar joints
125 7.6 Welded joints between CHS or RHS brace members and I or H ction chords
126 7.7 Welded joints between CHS or RHS brace members and channel ction chord members 129
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This document (prEN 1993-1-8: 2003) has been prepared by Technical Committee CEN/TC 250 "Structural Eurocodes", the cretariat of which is held be BSI.
This document is currently submitted to the Formal Vote.
This document will superde ENV 1993-1-1.
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This standard gives alternative procedures, values and recommendations with notes indicating where national choices may have to be made. The National Standard implementing EN 1993-1-8 should have a National Annex containing all Nationally Determined Parameters for the design of steel structures to be constructed in the relevant country.
National choice is allowed in EN 1993-1-8 through:
– 2.2(2)
– 2.8 (Group 6: Rivets) – 3.4.2(3) –
6.2.
7.2(9)
