Foreword
1 General
1.1 Scope
1.2 Normative references
1.3 Assumptions
1.4 Distinction between principles and
application rules
1.5 Terms and definitions
1.6 Symbols
2 Basis of design
2.1 Requirements
2.1.1 Basic requirements
2.1.2 Reliability management
2.1.3 Design working life, durability and
robustness
2.2 Principles of limit state design
2.3 Basic variables
2.3.1 Actions and environmental influences
2.3.2 Material and product properties
2.4 Verification by the partial factor method
2.5 Design assisted by testing
2.6 Clearances to overhead travelling cranes
2.7 Underslung cranes and hoist blocks
2.8 Crane tests
3 Materials
3.1 General
3.2 Structural steels
3.2.1 Material properties
3.2.2 Ductility requirements
3.2.3 Fracture toughness
3.2.4 Through thickness properties
3.2.5 Tolerances
3.2.6 Design values of material coefficients
3.3 Stainless steels
3.4 Fasteners and welds
3.5 Bearings
3.6 Other products for crane supporting
structures
3.6.1 General
3.6.2 Rail steels
3.6.3 Special connecting devices for rails
4 Durability
5 Structural analysis
5.1 Structural modelling for analysis
5.1.1 Structural modelling and basic assumptions
5.1.2 Joint modeling
5.1.3 Ground structure interaction
5.2 Global analysis
5.2.1 Effects of deformed geometry of the
structure
5.2.2 Structural stability of frames
5.3 Imperfections
5.3.1 Basis
5.3.2 Imperfections for global analysis of frames
5.3.3 Imperfections for analysis of bracing systems
5.3.4 Member imperfections
5.4 Methods of analysis
5.4.1 General
5.4.2 Elastic global analysis
5.4.3 Plastic global analysis
5.5 Classification of cross-sections
5.6 Runway beams
5.6.1 Effects of crane loads
5.6.2 Structural system
5.7 Local stresses in the web due to wheel loads on
the top flange
5.7.1 Local vertical compressive stresses
5.7.2 Local shear stresses
5.7.3 Local bending stresses in the web due to eccentricity
of wheel loads
5.8 Local bending stresses in the bottom flange due to
wheel loads
5.9 Secondary moments in triangulated components
6 Ultimate limit states
6.1 General
6.2 Resistance of cross-section
6.3 Buckling resistance of members
6.3.1 General
6.3.2 Lateral-torsional buckling
6.4 Built up compression members
6.5 Resistance of the web to wheel loads
6.5.1 General
6.5.2 Length of stiff bearing
6.6 Buckling of plates
6.7 Resistance of bottom flanges to wheel loads
7 Serviceability limit states
7.1 General
7.2 Calculation models
7.3 Limits for deformations and displacements
7.4 Limitation of web breathing
7.5 Reversible behaviour
7.6 Vibration of the bottom flange
8 Fasteners, welds, surge connectors and rails
8.1 Connections using bolts, rivets or pins
8.2 Welded connections
8.3 Surge connectors
8.4 Crane rails
8.4.1 Rail material
8.4.2 Design working life
8.4.3 Rail selection
8.5 Rail fixings
8.5.1 General
8.5.2 Rigid fixings
8.5.3 Independent fixings
8.6 Rail joints
9 Fatigue assessment
9.1 Requirement for fatigue assessment
9.2 Partial factors for fatigue
9.3 Fatigue stress spectra
9.3.1 General
9.3.2 Simplified approach
9.3.3 Local stresses due to wheel loads on the top flange
9.3.4 Local stresses due to underslung trolleys
9.4 Fatigue assessment
9.4.1 General
9.4.2 Multiple crane actions
9.5 Fatigue strength
Annex A [informative] - Alternative assessment method
for lateral-torsional buckling
Annex NA (informative) Irish National Annex to
Eurocode 3: Design of steel structures
- Part 6: Crane supporting structures
Introduction
NA.1 Scope
NA.2 Nationally Determined Parameters
NA.3 Decisions on informative annexes