This book details the basic concepts and the design rules included in Eurocode 3
Design of steel structures: Part 1-8
Design of joints
Joints in composite construction are also addressed through references to Eurocode 4
Design of composite steel and concrete structures
Part 1-1: General rules and rules for buildings.
Attention has to be duly paid to the joints when designing a steel or composite structure, in terms of the global safety of the construction, and also in terms of the overall cost, including fabrication, transportation and erection. Therefore, in this book, the design of the joints themselves is widely detailed, and aspects of selection of joint configuration and integration of the joints into the analysis and the design process of the whole construction are also fully covered.
Connections using mechanical fasteners, welded connections, simple joints, moment-resisting joints and lattice girder joints are considered. Various joint configurations are treated, including beam-to-column, beam-to-beam, column bases, and beam and column splice configurations, under different loading situations (axial forces, shear forces, bending moments and their combinations).
The book also briefly summarises the available knowledge relating to the application of the Eurocode rules to joints under fire, fatigue, earthquake, etc., and also to joints in a structure subjected to exceptional loadings, where the risk of progressive collapse has to be mitigated.
Finally, there are some worked examples, plus references to already published examples and to design tools, which will provide practical help to practitioners.
FOREWORD XIII
PREFACE XV
LIST OF SYMBOLS AND ABBREVIATIONS XIX
Chapter 1 INTRODUCTION 1
1.1 General 1
1.2 Definitions 12
1.3 Material Choice 26
1.4 Fabrication and erection 28
1.5 Costs 29
1.6 Design approaches 29
1.7 Design tools 39
1.8 Worked examples 44
Chapter 2 STRUCTURAL ANALYSIS AND DESIGN 47
2.1 Introduction 47
2.2 Joint modelling 51
2.3 Joint idealisation 60
2.4 Joint classification 63
2.5 Ductility classes 66
Chapter 3 CONNECTIONS WITH MECHANICAL FASTENERS 71
3.1 Mechanical fasteners 71
3.2 Categories of connections 73
3.3 Positioning of bolt holes 76
3.4 Design of the basic components 78
3.5 Design of connections 100
Chapter 4 WELDED CONNECTIONS 123
4.1 Type ofwelds 123
4.2 Constructive constraints 127
4.3 Design of welds 135
4.4 Distribution of forces in a welded joint 145
Chapter 5 SIMPLE JOINTS 153
5.1 Introduction 153
5.2 Steel joints 155
5.3 Composite joints 187
5.4 Column bases 189
Chapter 6 MOMENT RESISTANT JOINTS 205
6.1 Introduction 205
6.2 Component characterisation 206
6.3 Assembly for resistance 235
6.4 Assembly for rotational stiffness 257
6.5 Assembly for ductility 268
6.6 Application to steel beam-to-column joint configurations 272
6.7 Application to steel column splices 300
6.8 Application to column bases 303
6.9 Application to composite joints 314
Chapter 7 LATTICE GIRDER JOINTS 329
7.1 General 329
7.2 Scope and field of application 330
7.3 Design models 333
Chapter 8 JOINTS UNDER VARIOUS LOADING SITUATIONS 341
8.1 Introduction 341
8.2 Composite joints under sagging moment 342
8.3 Joints in fire 343
8.4 Joints under cyclic loading 344
8.5 Joints under exceptional events 346
Chapter 9 DESIGN STRATEGIES 349
9.1 Design opportunities for optimisation of joints and frames 349
9.2 Application procedures 364
BIBLIOGRAPHIC REFERENCES 375
Annex A Practical values for required rotation capacity 385
Annex B Values for lateral torsional buckling strength of a fin plate 387
