Concrete: Future direction in Transport and Main Roads · Concrete: Future direction in Transport...
Transcript of Concrete: Future direction in Transport and Main Roads · Concrete: Future direction in Transport...
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Concrete: Future direction in
Transport and Main Roads
Ross Pritchard | Department of Transport and Main Roads
Concrete Institute Seminar, 17 May 2016
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Our values, our diversity
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Agenda
1. Industry feedback
2. The Department of Transport and Main Roads (TMR)
“Design Criteria for Bridges and Other Structures”
3. Forthcoming AS 5100 Bridge Code Update
4. Specifications
5. Building Information Modelling
6. Conclusion.
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Industry consultation
1. Develop common / shared understanding of challenges
facing Transport and Main Roads (TMR) when building
infrastructure
2. The department’s objective to provide fit-for-purpose,
value for money outcomes
3. Risk balance – the department and industry
4. Performance standard versus prescriptive standard
5. Variation climate, geology and traffic volumes
6. Engage new developments in technology.
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Design Criteria for Bridges and
Other Structures 1. Industry forum 2015
2. Work group selected for consultation
3. Workshop and comments in drafts has resulted in 100s
of comments
4. Some clauses extensive refinements
5. Publish by June 2016.
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Design criteria amendments
• Design traffic loads for busways and light rail
• Disability access for public transport at stations
• Development applications
• Tunnel design – linings, anchors
• Protection to bridge piers for vehicle impact – new and
existing bridges
• Raked piles
• Concrete arch design – responsibility of arch designer
and footing designer, work method statement for
construction.
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Design Criteria outcomes
1. More clarity
2. Better shared understanding
3. More balanced document identifying a broader range of
cases applicable to the department
4. Better prescriptive versus performance criteria.
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AS 5100 Bridge Code update
• Standards Australia managing update
• Commenced late 2010
• Expect to publish late 2016
• Approximately 2,500 pages
• Massive project, enormous engagement by industry and
Austroads members
• Member Standards Australia BD-090 Committee and
Subcommittees.
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AS 5100 changes
Part Title Changes
Part 1 General Refresh
Part 2 Loads Update especially rail
Part 3 Foundations Minor changes
Part 4 Bearings and Joints New products
Part 5 Concrete Major rewrite of some sections
Part 6 Steel Total rewrite
Part 7 Bridge Assessment Major revision
Part 8 Rehabilitation
Part 9 Timber
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AS 5100.1 General
• General upgrade including ductility
• Defined service and ultimate limit states
• Hydraulics – clarity about flood immunity and
serviceability design life
• Safety in Design
• Climate change and sustainability
• Collision loads
• Transition barrier between bridge and road.
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AS 5100.2 Loads
• Urban flooding loads included
• Air space development
• Earthquake (force method in main text, displacement in
Appendix)
• Road traffic loads barriers increased
• Light rail included
• Rail loading changes
Braking
Collision loads
Protection of abutments and piers.
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AS 5100.7 Bridge assessment
• Changes from “Rating” to “Bridge Assessment”
• Clear methodology for bridge assessment 9 (compared
to design)
• Definition of what is included in bridge assessment
• Includes cranes and Heavy Load Platforms for the first
time
• Assessment factors, as well as design factors.
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AS5100.8 Rehabilitation
• Concrete
Cathodic Protection
Fire damage
Repair, rehabilitation and strengthening
• Steel
• Timber
• Masonry
• Bearings
• Deck joints
• Barriers Culverts.
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TMR Implementation – AS 5100
• Implement on new contracts / commissions, not
retrospectively
• “Matters Requiring Resolution” to be updated
• Some alignment between new code and “Design
Criteria” but there will be change
• Update of “Design Criteria”.
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MRTS 70 Concrete
• MRTS70 based on ‘N’ and ‘S’ Class of AS 1397
• Risk based methodology considering geology and
environment
• Management of Alkali Aggregate Reactivity
• A process to manage new and innovative concrete
products
• Reality check to ensure we consider all concrete
applications used by TMR to avoid unintended
consequences
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Proposed MRTS 70
MRTS70 – In Scope
Product AS1397 Class
Quarry Registrat
ion
Flyash/ Supplementary Cementitious
Additional
Curing
Increased Test
Frequency
All Prestressed
All steam cured
100 year design life
S Required Required Yes Increased
50 year (or less) design life
S Required Required Yes AS 1379 (project)
Small precast concrete stock items (your feedback being sought)
N Optional Optional No AS 1379
Non-Structural N Optional Optional No AS 1379
MRTS70 – Out of scope
Steel-reinforced concrete pipes
Fibre reinforced pipes
Concrete pavements
Extruded concrete barriers
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Building Information Modelling (BIM)
• Trialled on Angellala Creek
• BIM Design, Construction, Asset Management
• Progressive implementation
• Effectiveness in design
• Strategy of construction data
• Construction data asset management
• 21st Century.
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2D drawing
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3D technology overlayed on aerial photo
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3D by product type
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3D visualization
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Construction data
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Conclusion
• Transport and Main Roads are keen to engage with
industry
• The department is incorporating changes to AS 5100
• MRTS70 is being updated
• New technology, BIM, being adoptive.
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Thank you