STSS Full PresentationV9

Report
STSS
Simple Tools Sell Steel
Simple Tools Sell Steel (STSS)
STANDARDS
PROBLEM/OPPORTUNITY
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Development of new methods for prediction
of performance and characterisation of
resistance in design applications for new high
strength steels are needed
Objectives are to remove the cumbersome
complexity of the calculation methods and to
provide efficient tools
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Structural Steel Resistance
New Methods and Tools
PARTICIPANTS
IMS ACTIVITY
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Research, develop and disseminate new
calculation methods and tools
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Direct Strength Method – Lead
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Continuous Strength Method – Lead
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Overall Interaction Concept – Lead
Planned project launch March, 2012
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Major Steel Producers
Steel Fabricators
Structural Steel Associations
Construction Design Engineering Firms
Structural Steel Research Institutions
Universities
SSTS - Project Rationale
• In order to use structural steel in buildings, bridges,
and any other applications, design engineers must
calculate the resistances to ensure design safety.
• Current calculation methods are cumbersome and
will not accommodate advances in new materials.
• Because incremental improvements of existing
methods will not be successful, this project starts
from the perspective of new methods, revolutionary
in character, and appropriate for the materials of
today and tomorrow.
SSTS – The Big Picture
• The core of this project is the development and
assessment of new design methods for steel structures.
• Simple design formulae and application software will be
eventually embedded in standards and must therefore
anticipate now, the needs of tomorrow
• The developed methods must be able to:
– Calculate the resistance of sections and members
– Include a possible influence of shear stresses
– Offer the possibility to resort to either elastic or plastic analysis
• Common structural steels and non-linear materials
(stainless steel, aluminium) in various cross-sectional
shapes, either open or hollow, must be able to be
included in the analysis.
STSS Project Business Architecture
STSS Basic Concept
• Overall Interaction Concept (OIC)
– Basis: interaction between Resistance and Instability
– Generalizes “relative slenderness” concept to:
• Sections and Members
• Basic loading cases as well as complex ones
SSTS Benefits of Overall Interaction Concept
• Simple, consistent, rational (economic)
• Allows for direct design calculations:
– effective and efficient analytical framework
• Pave the way for tomorrow’s high strength steels
• Removes disadvantages embedded with crosssection classification system
– effective properties, discontinuities, inconsistencies
• Simple application tools to be made available for an
efficient and practical use
STSS Project Work Plan
• STSS operates in 4 IMS Regions
– Switzerland, Europe, USA, and Korea
• There are 7 separate Work Packages
• The Project Lead is in Switzerland
Professor Nicolas Boissonnade
College of Engineering and Architecture
Civil Engineering Department
Fribourg, Switzerland
STSS Project Work Packages
Cross-Sectional and Member
Resistance
I and H-shaped Sections
Development of
Practical Tools
and Design Formulae
WP 6
Development of
Criteria to allow
for Plastic Analysis
WP 5
WP 1
Cross-Sectional and
Member Resistance
Hollow or
Tubular Sections
WP 2
WP 4
WP 3
Behaviour of Non-linear
Materials, including
Strain Hardening Effects
Influence of Shear Stresses
on Cross-sectional Resistance
WP 7 - Incorporation of Design Formulae
into Design Standards
STSS Project Work Package One
• Develop and assess the Overall Interaction Concept to
provide accurate estimates of the resistance of Open
Sections, for both Sections and Members.
• Lead – Prof. Jean-Pierre Jaspart – University of Liège –
Belgium.
• Confirmed Partners: ArcelorMittal – Luxembourg;
College of Engineering and Architecture of Fribourg,
Johns Hopkins University, Imperial College London;
Technical University of Graz.
• To be invited – Tata Steel, United Kingdom;
AISI/AISC/Nucor – USA; POSCO – Korea.
STSS Project Work Package Two
•
Develop and assess the Overall Interaction Concept to provide
accurate estimates of the resistance of Hollow Sections, for
both Sections and Members.
•
Lead – Prof. Nicolas Boissonnade – College of Engineering and
Architecture of Fribourg – Switzerland.
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Confirmed Partners: Voestalpine Krems – Austria; BrütschRuegger – Switzerland; Stahl Gerlafingen – Switzerland;
University of Liège, Johns Hopkins University, Imperial College
London; Technical University of Graz.
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To be invited – CIDECT; Tata Steel, United Kingdom; Grupo
Condesa, Spain; Vallourec & Mannesmann Tubes, Germany,
POSCO – Korea.
STSS Project Work Package Three
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Extend the scope of the Overall Interaction Concept to include
the behaviour of non-linear materials and to benefit from the
inclusion of strain hardening effects.
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Lead – Dr Leroy Gardner – Imperial College London – England.
•
Confirmed Partners: College of Engineering and Architecture
of Fribourg, University of Liège, Johns Hopkins University,
Technical University of Lisbon, Technical University of Graz.
•
To be invited – ArcelorMittal – Luxembourg; Tata Steel, United
Kingdom; AISI/AISC/Nucor – USA; POSCO – Korea, CIDECT;
Grupo Condesa, Spain; Vallourec & Mannesmann Tubes,
Germany.
STSS Project Work Package Four
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Include Influence of Shear and/or Torsion Stresses in the Overall
Interaction Concept Resistance Estimates of WP1 and WP2.
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Lead – Prof. Ben Schafer – Johns Hopkins University – Baltimore, USA
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Confirmed Partners: Voestalpine Krems – Austria; Brütsch-Ruegger –
Switzerland; Stahl Gerlafingen – Switzerland; College of Engineering
and Architecture of Fribourg, University of Liège, Imperial College
London, Technical University of Lisbon, Virginia Tech (Blacksburg, VA –
USA).
•
To be invited – ArcelorMittal – Luxembourg; Tata Steel, United
Kingdom; AISI/AISC/Nucor – USA; POSCO – Korea, CIDECT; Grupo
Condesa, Spain; Vallourec & Mannesmann Tubes, Germany.
STSS Project Work Package Five
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The removal of Classes within the Overall Interaction Concept requires
the development of a set of new criteria for Plastic Analysis.
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Lead – Prof. Nicolas Boissonnade – College of Engineering and
Architecture of Fribourg – Switzerland.
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Confirmed Partners: Voestalpine Krems – Austria; Brütsch-Ruegger –
Switzerland; Stahl Gerlafingen – Switzerland; University of Liège,
Imperial College London, Technical University of Lisbon, Technical
University of Graz, Johns Hopkins University, Virginia Tech (Blacksburg,
VA – USA).
•
To be invited – ArcelorMittal – Luxembourg; Tata Steel, United
Kingdom; AISI/AISC/Nucor – USA; POSCO – Korea, CIDECT; Grupo
Condesa, Spain; Vallourec & Mannesmann Tubes, Germany.
STSS Project Work Package Six
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Based on the Overall Interaction Concept as developed in WPs 1,2,3,
and 4, provide practical tools and design formulae to structural
engineers for resistance calculations in project design. These tools and
formulae will be prepared in a manner consistent with building codes
for ease of promulgation and adoption as national standards.
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Lead – Prof. Dinar Camotin – Technical University of Lisbon – Portugal.
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Confirmed Partners: College of Engineering and Architecture of
Fribourg, University of Liège, Imperial College London, Johns Hopkins
University.
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To be invited – ArcelorMittal – Luxembourg; Tata Steel, United
Kingdom; AISI/AISC/Nucor – USA; POSCO – Korea, CIDECT; Grupo
Condesa, Spain; Vallourec & Mannesmann Tubes, Germany.
STSS Project Work Package Seven
WP 7 - Incorporation of Design Formulae
into Design Standards
• The various developed design formulae are
developed in a code-ready format, with the
intention to see them incorporated in design
standards worldwide.
• Lead – Prof. Nicolas Boissonnade – College of
Engineering and Architecture of Fribourg –
Switzerland.
• Confirmed Partners: University of Liège, Imperial
College London, Johns Hopkins University, Virginia
Tech , Technical University of Lisbon, Technical
University of Graz.
STSS Project Timing
• The project will begin in Q1 of
2012 and is expected to have a
duration of five years.
• Parts of WPs 1, 2, 3 and 4 have
already been launched.
STSS Project Contact Information
• Prof. Dr. Nicolas Boissonnade
[email protected]
• Civil Engineering Department– College of
Engineering and Architecture of Fribourg
• Pérolles 80 – CP 32 – CH-1705 Fribourg
(Switzerland)
• +41 (0)26 429 66 79 (direct)
• +41 (0)26 429 66.11 (central)
• +41 (0)26 429 66.00 (fax)

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