opportunities for scientific and technical cooperation in structural...
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Workshop on the use of the Eurocodes in the Mediterranean Countries
26-27 November 2006 - VareseJRC - NATO
Opportunities for scientific and Opportunities for scientific and technical cooperation in technical cooperation in
structural concretestructural concrete
Prof. Ing. Giuseppe Mancinifib President
Chairman of CEN-TC250 – SC2
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fibfib fédération internationale du béton
International Federation for Structural Concrete
38 Countries ⇒ 5 Continents
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fibfib
Born in the 1998 by the merging of
CEBComité Européen du
Béton(1953)
FIPFédération Internationale
de la Precontrainte(1952)
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fibfib
Interacting with other international civil engineering associations
CIB ECCS fib IABSE IASS RILEM
Liaison Committee
Joint Commitee on Structural Safety(JCSS)
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Scientific activity
10 Permanent Commissions
S.A.G. 5
fibfib
42 Task Groups
3 Special Activity Groups
New Model Code
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fib fib OBJECTIVESOBJECTIVES
Develop at the international level the study of scientific and practical matters in order to
advance the technical, economic, aesthetic and environmental performance of concrete
construction
This scope is achieved by:
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-- Stimulation Stimulation of of research research and and synthesis synthesis of of finding finding from research from research and and practicepractice
-- Translation Translation of of research findings research findings and and experience experience into into design and design and construction practiceconstruction practice
-- Dissemination Dissemination of the of the results by results by way of way of pubblicationspubblications, , international congresses international congresses and and symposiasymposia
-- Production of Production of reccomandations for reccomandations for design and design and construction construction of concrete of concrete structuresstructures
-- Information to Information to the the members members on the on the latest latest developments developments through regular through regular pubblications pubblications ((BulletinsBulletins, Journal, Model , Journal, Model CodesCodes) )
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Main Code relates pubblicationsMain Code relates pubblications
1964: CEB International Raccomandations(pubblished in 15 languages)
1970: CEB-FIP International Raccomandations(R.C. And P.C.)
1978: CEB-FIP Model Code 1978(strong influence on ENV 1992)
1985: CEB Model Code for Seismic Design ofConcrete Strctures
1993: CEB-FIP Model Code 1990(strong influence on EN 1992)
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The same people involved in fib and CEN-TC 250
Joost WalravenChairman of P.T. for EN 1992-1-1
Giuseppe Mancini Chairman of P.T.
for EN 1992-2
Andrew Beeby Chairman of P.T.
for EN1992-3
and many others
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The same scope and the same feeling in concrete world
CENCEN--TC 250TC 250
International Model Codes
Regional CodesEN 1992 (1-1 / 1-2 / 2 / 3)
Strict collaborationStrict collaboration
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In different stages
CENCEN--TC 250TC 250
CommissionsTask Groups
S.A.G.
SC0, SC2SC4, SC8, HGB
Opportunities for cooperation betweenOpportunities for cooperation between
Maintenance of EN199X
Future developments
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NPD’s ⇒ Incidental anomalous values choosen by the member countries
⇒ Amendments
Maintenance period
e.g. in EN 1992-1-1 → shear-tension failure of hollow core elements
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Safety format for actual safety evaluation of existing structures
CENCEN--TC 250TC 250Commissions 2 (safety)
S.A.G. 5 (new Model Code)SC0
(Basis of design)
Future Future developmentsdevelopments
γm calibration Random fieldsJCSS: Probabilistic Assessment
of Existing Structures
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Pedestrian bridges
CENCEN--TC 250TC 250TG 1.2
(Bulletin 32, Nov. 2005:Guidelines for the design of
footbridges)
HGB
Future Future developmentsdevelopments
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fibfib CENCEN--TC 250TC 250Commission 4
(Modelling of structuralbehaviour and design)
SC2(Concrete structures)
Future Future developmentsdevelopments
-- Influence Influence of aggregate of aggregate type type ((limestonelimestone) and ) and min value min value of of DDmaxmax on on the the resisting mechanisms controlled by tensile strength resisting mechanisms controlled by tensile strength and and by by interlockinterlock
-- Web Web crushing strength for very thin webs crushing strength for very thin webs and and inclined stirrupsinclined stirrups-- Shear Shear design and design and size effect size effect in in bridgesbridges-- Sticking factor combined with other mechanisms Sticking factor combined with other mechanisms in in shear friction shear friction
strength evaluationstrength evaluation-- AdditionalAdditional design design rules for external tendons rules for external tendons ((deviatorsdeviators))-- New New resisting models resisting models in in presence presence of of corroded reinforcement corroded reinforcement ((bond bond
reductionreduction))
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fibfib CENCEN--TC 250TC 250S.A.G. 5
(New Model Code)SC4
(Composite structures)
Future Future developmentsdevelopments
-- ShearShear behaviour behaviour of concrete of concrete slabs subject to slabs subject to out of the out of the plane shear plane shear and and biaxial tensionbiaxial tension, , combined with bendingcombined with bending
-- Developing Developing of composite of composite externally prestressed structures externally prestressed structures ((bridgesbridges))
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fibfib CENCEN--TC 250TC 250Commission 7
(Seismic design) SC8
Future Future developmentsdevelopments
-- Compatibility Compatibility of of models used for seismic models used for seismic and nonand non--seismic seismic design design ((shearshear))
-- Safety Safety format format for for N.L. N.L. analysis analysis ((safety evaluation safety evaluation of of existing bridges existing bridges in in seismic areasseismic areas))
-- ReliabilityReliability of of capacity capacity design design for for mediummedium--large bridgeslarge bridges
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fibfib CENCEN--TC 250TC 250
ConclusionConclusion
A common task
Produce codes able to fulfill the sustainability criteria in design of
concrete structures
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A full integration is necessary between:
Research Design Construction
Several opportunities for collaboration between fib and CEN TC250
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Thank you for the attention