Design of Joints in Steel Structures : Eurocode 3: Design of Steel Structures ; Part 1-8 Design of Joints

368 Pages·2017·10.76 MB·English

by  Jaspart

D J
ESIGN OF OINTS IN
S S
TEEL TRUCTURES
UK E
DITION
ECCS E D M
UROCODE ESIGN ANUALS
ECCSEDITORIALBOARD
LuísSimõesdaSilva(ECCS)
AntónioLamas(Portugal)
Jean-PierreJaspart(Belgium)
ReidarBjorhovde(USA)
UlrikeKuhlmann(Germany)
DESIGNOFSTEELSTRUCTURES–2NDEDITION
LuísSimõesdaSilva,RuiSimõesandHelenaGervásio
FIREDESIGNOFSTEELSTRUCTURES–2NDEDITION
Jean-MarcFranssenandPauloVilaReal
DESIGNOFPLATEDSTRUCTURES
DarkoBeg,UlrikeKuhlmann,LaurenceDavaineandBenjaminBraun
FATIGUEDESIGNOFSTEELANDCOMPOSITESTRUCTURES
AlainNussbaumer,LuísBorgesandLaurenceDavaine
DESIGNOFCOLD-FORMEDSTEELSTRUCTURES
DanDubina,ViorelUngureanuandRaffaeleLandolfo
DESIGNOFJOINTSINSTEELANDCOMPOSITESTRUCTURES
Jean-PierreJaspartandKlausWeynand
DESIGNOFSTEELSTRUCTURESFORBUILDINGSINSEISMICAREAS
Raffaele Landolfo, Federico Mazzolani, Dan Dubina, Luís Simões da Silva and
Mariod’Aniello
ECCS–SCIEUROCODEDESIGNMANUALS
DESIGNOFJOINTSINSTEELSTRUCTURES,UKEDITION
Jean-PierreJaspartandKlausWeynand
AdaptedtoUKbyGrahamCouchmanandAnaM.GirãoCoelho
DESIGNOFSTEELSTRUCTURES,UKEDITION
LuísSimõesdaSilva,RuiSimões,HelenaGervásio
AdaptedtoUKbyGrahamCouchman
ECCSEUROCODEDESIGNMANUALS–BRAZILIANEDITIONS
DIMENSIONAMENTODEESTRUTURASDEAÇO
LuísSimõesdaSilva,RuiSimões,HelenaGervásio,PedroVellasco,LucianoLima
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D J S
ESIGN OF OINTS IN TEEL
S
TRUCTURES
Eurocode 3: Design of steel structures
Part 1-8 – Design of Joints
UK Edition
Jean-Pierre Jaspart
Klaus Weynand
Adapted for the UK by
Graham Couchman
Ana M. Girão Coelho
Design of Joints in Steel Structures
UKEdition
2017
Publishedby:
ECCS–EuropeanConventionforConstructionalSteelwork
[email protected]
www.steelconstruct.com
Sales:
Wilhelm Ernst & Sohn Verlag für Architektur und technische Wissenschaften
GmbH&Co.KG,Berlin
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Copyright©2017ECCS–EuropeanConventionforConstructionalSteelwork
ISBN(ECCS):978-92-9147-135-5
ISBN(Ernst&Sohn):978-3-433-03216-9
Legaldep.:PrintedinSersilito,EmpresaGráficaLda,Maia,Portugal
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TABLEOFCONTENTS
T C
ABLE OF ONTENTS
FOREWORD xiii
PREFACE xv
UKFOREWORD xix
NOTATION xxix
Chapter1
INTRODUCTION 1
1.1 General 1
1.1.1 Aimsofthebook 1
1.1.2 Briefdescriptionofthecontentsofthebook 10
1.1.3 Typesofstructuralsystemsandjointscovered 11
1.1.4 Basisofdesign 12
1.2 Definitions 12
1.2.1 Jointproperties 14
_____
1.2.2 Sourcesofjointdeformation 15
v
1.2.3 Beamsplicesandcolumnsplices 19
1.2.4 Beam-to-beamjoints 20
1.2.5 Columnbases 21
1.2.6 Hollowsectionjoints 22
1.3 Materialchoice 22
1.4 Fabricationanderection 26
1.5 Costs 27
1.6 Applicationofthe“staticapproach” 27
1.6.1 Componentapproach 29
1.6.2 Hybridjointsaspects 35
1.7 Designtools 35
1.7.1 Typesofdesigntools 36
TABLEOFCONTENTS
1.7.2 Examplesofdesigntools 37
1.8 Workedexamples 40
Chapter2
STRUCTURALANALYSISANDDESIGN 43
2.1 Introduction 43
2.1.1 Elasticorelastoplasticanalysisandverificationprocess 44
2.1.2 Firstorderorsecondorderanalysis 45
2.1.3 Integrationofjointresponseintotheframeanalysisand
designprocess 46
2.2 Jointmodelling 47
2.2.1 General 47
2.2.2 Modellingandsourcesofjointdeformation 49
2.2.3 SimplifiedmodellingaccordingtoEN1993 50
2.2.4 Concentrationofthejointdeformation 51
2.3 Jointidealisation 56
2.3.1 Elasticidealisationforanelasticanalysis 57
2.3.2 Rigid-plasticidealisationforarigid-plasticanalysis 58
2.3.3 Non-linearidealisationforanelastic-plasticanalysis 59
_____ 2.4 Jointclassification 59
2.4.1 General 59
vi
2.4.2 Classificationbasedonmechanicaljointproperties 60
2.5 Ductilityclasses 62
2.5.1 Generalconcept 62
2.5.2 Requirementsforclassesofjoints 65
Chapter3
CONNECTIONSWITHMECHANICALFASTENERS 67
3.1 Mechanicalfasteners 67
3.2 Categoriesofconnections 69
3.2.1 Shearconnections 69
3.2.2 Tensionconnections 71
TABLEOFCONTENTS
3.3 Positioningofboltholes 72
3.4 Designofthebasiccomponents 74
3.4.1 Boltsinshear 74
3.4.2 Boltsintension 75
3.4.3 Boltsinshearandtension 76
3.4.4 Preloadedbolts 77
3.4.5 Platesinbearing 85
3.4.6 Blocktearing 86
3.4.7 Injectionbolts 87
3.4.8 Pins 88
3.4.9 Blindbolting 91
3.4.10 Nails 94
3.4.11 Eccentricityofangles 95
3.5 Designofconnections 97
3.5.1 Boltedlapjoints 97
3.5.2 BoltedT-stubs 101
3.5.3 Gussetplates 113
3.5.4 Longjoints 117
Chapter4
_____
WELDEDCONNECTIONS 119
vii
4.1 Typesofwelds 119
4.1.1 Buttwelds 119
4.1.2 Filletwelds 120
4.1.3 Filletweldsallround 121
4.1.4 Plugwelds 122
4.2 Constructionconstraints 122
4.2.1 Mechanicalpropertiesofmaterials 122
4.2.2 Weldingprocesses,preparationofweldsandweldquality 123
4.2.3 Geometryanddimensionsofwelds 127
4.3 Designofwelds 130
4.3.1 Generalities 130
4.3.2 Filletwelds 131
4.3.3 Filletweldsallround 134
TABLEOFCONTENTS
4.3.4 Buttwelds 135
4.3.5 Plugwelds 136
4.3.6 Conceptoffullstrengthfilletweld 136
4.4 Distributionofforcesinaweldedjoint 139
4.4.1 Generalities 139
4.4.2 Particularsituations 141
Chapter5
SIMPLEJOINTS 147
5.1 Introduction 147
5.2 Beam-to-columnandbeam-to-beamjoints 149
5.2.1 Introduction 149
5.2.2 Scopeandfieldofapplication 150
5.2.3 Jointmodellingforframeanalysisanddesignrequirements 153
5.2.4 Designresistance 156
5.2.5 Practicalwaystosatisfytheductilityandrotation
requirements 163
5.3 Columnbases 174
5.3.1 Introduction 174
5.3.2 Basisfortheevaluationofthedesignresistance 176
_____
5.3.3 Resistancetoaxialforces 177
viii
5.3.4 Resistancetoshearforces 185
Chapter6
MOMENT-RESISTINGJOINTS 189
6.1 Introduction 189
6.2 Componentcharacterisation 190
6.2.1 Columnwebpanelinshearinsteelorcompositejoints 190
6.2.2 Columnwebintransversecompressioninsteelorcomposite
joints 192
6.2.3 Columnwebintransversetension 196
6.2.4 Columnflangeintransversebending 197
6.2.5 Endplateinbending 203
TABLEOFCONTENTS
6.2.6 Flangecleatinbending 205
6.2.7 Beamorcolumnflangeandwebincompression 207
6.2.8 Beamwebintension 209
6.2.9 Plateintensionorcompression 210
6.2.10 Boltsintension 211
6.2.11 Boltsinshear 212
6.2.12 Boltsinbearing(onbeamflange,columnflange,endplate
orcleat) 213
6.2.13 Concreteincompressionincludinggrout 213
6.2.14 Baseplateinbendingundercompression 214
6.2.15 Baseplateinbendingundertension 214
6.2.16 Anchorboltsintension 215
6.2.17 Anchorboltsinshear 215
6.2.18 Anchorboltsinbearing 215
6.2.19 Welds 216
6.2.20 Haunchedbeam 216
6.3 Assemblyforresistance 217
6.3.1 Jointsunderbendingmoments 217
6.3.2 Jointsunderaxialforces 225
6.3.3 Jointsunderbendingmomentsandaxialforces 226
6.3.4 M−N−V 233
_____
6.3.5 Designofwelds 234
ix
6.4 Assemblyforrotationalstiffness 238
6.4.1 Jointsunderbendingmoments 238
6.4.2 Jointsunderbendingmomentsandaxialforces 247
6.5 Assemblyforductility 249
6.5.1 Steelboltedjoints 250
6.5.2 Steelweldedjoints 252
6.6 Applicationtosteelbeam-to-columnjointconfigurations 253
6.6.1 Extendedscope 253
6.6.2 Possibledesignsimplificationsforendplateconnections 256
6.6.3 Workedexample 257
6.7 Applicationtosteelcolumnsplices 281
6.7.1 Commonspliceconfigurations 281
TABLEOFCONTENTS
6.7.2 Designconsiderations 283
6.8 Applicationtocolumnbases 284
6.8.1 Commoncolumnbasisconfigurations 284
6.8.2 Designconsiderations 287
Chapter7
LATTICEGIRDERJOINTS 295
7.1 General 295
7.2 Scopeandfieldofapplication 296
7.3 Designmodels 298
7.3.1 General 298
7.3.2 Failuremodes 299
7.3.3 ModelsforCHSchords 300
7.3.4 ModelforRHSchords 301
7.3.5 Punchingshearfailure 302
7.3.6 Modelforbracefailure 303
7.3.7 M-Ninteraction 304
Chapter8
_____ JOINTSUNDERVARIOUSLOADINGSITUATIONS 305
x
8.1 Introduction 305
8.2 Jointsinfire 306
8.3 Jointsundercyclicloading 307
8.4 Jointsunderexceptionalevents 308
Chapter9
DESIGNSTRATEGIES 311
9.1 Introduction 311
9.2 Traditionaldesignapproach 314
9.3 Integrateddesignapproach 317
9.4 Economicconsiderations 319