c7 advanced design of bridges -...
TRANSCRIPT
C7 Advanced design of bridges
Jakub Dolejš
Tomáš Rotter
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List of lectures
1. Loading of bridges2. Load capacity of plate girder web3. Basis of fracture mechanics4. Cable stayed and suspension bridges5. Railway bridges with ballast bed6. Road bridges with orthotropic deck7. Spatial interaction of bridge structures8. Bridges with arched plan, rigid frame bridges9. Arch bridges10. Loading tests of steel bridges11. Fatigue12. Modelling of bridges13. Load-carrying capacity of steel bridges
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Objectives of the lecture 1
• EN 1991-2
• Loading on road bridges
• Loading on railway bridges
• Loading on footbridges
Objectives
EN 1991-2
Road bridges
Railway bridges
Footbridges
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EN 1991-2
EN 1991-2 :EUROCODE 1 - Actions on structures
Part 2 : Traffic loads on bridges
Section 1 General rules
Section 2 Classification of actions
Section 3 Design situations
Section 4 Actions on road bridges
Section 5 Actions on footways, cycle ways and footbridges
Section 6 Actions on railway bridges
Objectives
EN 1991-2
Road bridges
Railway bridges
Footbridges
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Road bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
Footbridges
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Road bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
Footbridges Load model 1: Double-axle concentrated loads
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Road bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesLoad model 2: Single axle load
Load Model 3 (special vehicles)
The National Annex may define Load Model 3 and its conditions of use. Annex A gives guidance
Load Model 4 (crowd loading)
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Road bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesLoad model 2: Single axle load
Load Model 3 (special vehicles)
The National Annex may define Load Model 3 and its conditions of use. Annex A gives guidance
Load Model 4 (crowd loading)
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Road bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesLoad groups
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Road bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesFatigue load models
FLM 1 - similar to LM1
FLM 2 – set of frequent lorries
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Road bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesFatigue load models
FLM 3 – single vehicle
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Railway bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
Footbridges
1. Load Model 71 (and Load Model SW/0 for continuous bridges) to represent normal rail traffic on mainline railways,
2. Load Model SW/2 to represent heavy loads,
3. Load Model HSLM to represent the loading from passenger trains at speeds exceeding 200 km/h,
4. Load Model „unloaded train“
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Railway bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesLoad Model 71
Load Models SW0 and SW2
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Railway bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesDynamic effects
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Railway bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesGroups of raiway bridges actions
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Railway bridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesFatigue models - 12 types
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FootbridgesObjectives
EN 1991-2
Road bridges
Railway bridges
FootbridgesGroups of loads on footbridges
Thank you for your kind attention
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Notes to users of the lecture
• This session is a basic information about actions on bridgesand requires about 60 min lecturing.
• The use of relevant standards of national standard institutions are strongly recommended.
• Keywords for the lecture:
steel bridge, load on bridges, action, road bridge, footbridge, railway bridge, Eurocodes.