Motivation
The goal of Commission 3 (COM3) is to define appropriate and reliable procedures to establish the safety of existing structures and any associated requirements for interventions to extend the safe operation or working life of such structures.
Scope and objective of technical work
COM3 will deliver this through the preparation of comprehensive guidance for the assessment of existing concrete structures, providing complementary recommendations to those given in the fib Model Code for Concrete Structures 2010 (fib MC2010), which was prepared primarily for the design of new concrete structures. To that end, COM3 will produce documents supporting the development of fib Model Code 2020 (fib MC2020) to be used for the assessment of the present structural performance and the prediction and evaluation of future structural performance of existing concrete structures with or without damage and/or revised operational requirements, together with any associated interventions required to extend their service life. It is envisaged that the documents to be produced could include technical reports, reviews of the state-of-the-art and technical history/evolution, technical guidelines, specifications and recommendations.
Commission Chair
Deputy Chair
| First name | Last name | Country | Affiliation |
|---|---|---|---|
| Joost | Walraven | Netherlands | Delft University of Technology |
| Kamyab | Zandi Hanjari | Sweden | Chalmers University of Technology |
| Tamon | Ueda | Japan | Hokkaido University |
| Takumi | Shimomura | Japan | Nagaoka Univ. of Technology |
| Miroslav | Sykora | Czech Republic | Czech Technical University in Prague |
| Alfred | Strauss | Austria | Univ. Bodenkultur Vienna |
| Raphaël | Steenbergen | Netherlands | TNO Structures and Safety |
| Norbert | Randl | Austria | Carinthia Univ. of Applied Sciences |
| Giuseppe | Mancini | Italy | Politecnico Torino |
| Sylvia | Kessler | Germany | Technical University of Munich |
| Gerrie | Dieteren | Netherlands | TNO |
| Dario | Coronelli | Italy | Politecnico di Milano |
| Robby | Caspeele | Belgium | Ghent University |
| Alberto | Meda | Italy | University of Rome “Tor Vergata” |
| David | Fernández-Ordóñez | Switzerland | fib |
| - | - | - | - |
| Stuart | Matthews | United Kingdom | Building Research Establishment Ltd |
| Agnieszka | Bigaj-van Vliet | Netherlands | TNO-Built Environment + Geosciences |
- TG3.1 - Reliability and safety evaluation: full-probabilistic and semi-probabilistic methods for existing structures
- TG3.2 - Modeling of structural performance of existing concrete structures
- TG3.3 - Assessment /evaluation and decision-making procedures for the through-life management of existing concrete structures
- TG3.4 - Selection and implementation of interventions / through-life management activities and measures for concrete structures
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TG3.1 - Reliability and safety evaluation: full-probabilistic and semi-probabilistic methods for existing structures
fib Task Group 3.1 (TG3.1) focuses on the reliability and safety evaluation of existing structures and focuses on the development of risk and reliability target levels for assessment and retrofitting, the fullprobabilistic modelling of the structural safety and semi-probabilistic assessment methods for existing structures.
Further, the scope of the previous activities will be broadened in order to resolve pending questions with respect to the full-probabilistic assessment and target safety levels for the assessment and retrofitting of existing structures, and support the risk and reliability related questions arising due to the developments in TG3.2, TG3.3 and TG3.4.
First name Last name Country Affiliation - - - - Dimitris Diamantidis Germany - Diego Lorenzo Allaix Italy - Miguel Prieto Spain - Wouter Botte Belgium Ghent University André Weber Germany Schöck Bauteile GmbH Marcus Achenbach Germany LGA KdöR Max Hendriks Netherlands - Milan Holicky Czech Republic - Sebastian Thöns Germany - Poul Linneberg Denmark COWI A/S Michael Faber Denmark Aalborg University Giuseppe Mancini Italy Politecnico Torino Jan Cervenka Czech Republic Cervenka Consulting Ltd Jürgen Schnell Germany University of Kaiserslautern Alfred Strauss Austria Univ. Bodenkultur Vienna Miroslav Sykora Czech Republic Czech Technical University in Prague Dara McDonnell Australia Arup Raphaël Steenbergen Netherlands TNO Structures and Safety Robby Caspeele Belgium Ghent University Peter Tanner Spain Cesma Ingenieros David Fernández-Ordóñez Switzerland fib -
TG3.2 - Modeling of structural performance of existing concrete structures
It is widely understood and accepted that existing concrete structures are different entities to contemporary new concrete structures. There are numerous flexibilities inherent to the process of the design of new concrete structures and in their construction. Existing structures are entities that can, in principle, be interrogated and assessed to establish their actual nature and condition. However, such processes have their difficulties and uncertainties and it is in fact often very difficult to interrogate an existing structure. These difficulties increase when an existing structure has experienced damage or deterioration. Accordingly, substantial and different uncertainties remain with respect to existing structures and these uncertainties need to be taken into account in the structural assessment process.
First name Last name Country Affiliation - - - - Francesco Tondolo Italy Politecnico di Torino Gabriele Bertagnoli Italy Politecnico di Torino Max Hendriks Netherlands - Daniel Dunkelberg Germany - Kamyab Zandi Hanjari Sweden Chalmers University of Technology Kunal Kansara United Kingdom - Dario Coronelli Italy Politecnico di Milano Camillo Nuti Italy Università degli Studi Roma Tre Agnieszka Bigaj-van Vliet Netherlands TNO-Built Environment + Geosciences Joost Walraven Netherlands Delft University of Technology Jan Cervenka Czech Republic Cervenka Consulting Ltd Beatrice Belletti Italy Univ. degli Studi di Parma Carmen Andrade Spain Instituto Eduardo Torroja Hikaru Nakamura Japan Nagoya University Alberto Meda Italy University of Rome “Tor Vergata” Zila Rinaldi Italy University of Rome “Tor Vergata” Alfred Strauss Austria Univ. Bodenkultur Vienna Konrad Zilch Germany Private Gerrie Dieteren Netherlands TNO Daia Zwicky Switzerland Univ. of Applied Sciences Fribourg Attila Vardai Hungary EMI-TUV SUD Ltd. Viktor Sigrist Switzerland Lucerne School of Engineering and Architecture Tamon Ueda Japan Hokkaido University Ane de Boer Netherlands Rijkswaterstaat Centre for Infrastructure & Environment Chris Hendy United Kingdom Atkins Christis Chrysostomou Cyprus Cyprus University of Technology Stuart Matthews United Kingdom Building Research Establishment Ltd David Fernández-Ordóñez Switzerland fib -
TG3.3 - Assessment /evaluation and decision-making procedures for the through-life management of existing concrete structures
Task Group 3.3 focuses on the development of a set of practical state-of-the-art guidelines for the assessment and decision-making procedures required for the through-life management of existing concrete structures, focusing on:
- advanced assessment techniques for the evaluation of existing structures, both in their current condition and taking account of time-dependent changes which may occur to them;
- simplified assessment approaches for such kind of evaluations;
- the development of practical decision-making procedures to perform a complete and coherent assessment of an existing structure.
The initial focus will be on the preparation of technical guidelines for the characterisation of deterioration mechanisms and of suitable prognosis methods that are feasible for practical engineering purposes. At the same time, technical guidelines will also be developed in order to clarify tools and techniques for surveys and monitoring of the addressed deterioration mechanisms.
First name Last name Country Affiliation - - - - Francesco Tondolo Italy Politecnico di Torino Gabriele Bertagnoli Italy Politecnico di Torino David Lehky Czech Republic Brno University of Technology Drahomir Novak Czech Republic Technical University of Brno Jeanette Orlowsky Germany - Stefan Maas Luxembourg - Thomas Petraschek Austria OBB-Infrastruktur AG Mark Alexander Ahrens Germany Ruhr-Univ. Bochum Michael Hansen Germany Leibniz Universität Hannover - Lavorato Italy University of Rome Geert Lombaert Belgium University of Leuven Marian Ralbosky Austria Austrian Research Institute Volkmar Zabel Germany Bauhaus University Weimar Joost Gulikers Netherlands Rijkswaterstaat Centre for Infrastructure Giuseppe Mancini Italy Politecnico Torino Camillo Nuti Italy Università degli Studi Roma Tre Carmen Andrade Spain Instituto Eduardo Torroja Dirk Lowke Germany Technische Universität Braunschweig Alberto Meda Italy University of Rome “Tor Vergata” Alfred Strauss Austria Univ. Bodenkultur Vienna Miroslav Sykora Czech Republic Czech Technical University in Prague Sylvia Kessler Germany Technical University of Munich Gerrie Dieteren Netherlands TNO Joan Ramon Casas Rius Spain Univ. of Catalunya Robby Caspeele Belgium Ghent University Giorgio Monti Italy Sapienza Università di Roma Jonathon Dyson Australia BCRC Manfred Keuser Germany BUNG Ingenieure AG Brett Pielstick United States Private Peter Tanner Spain Cesma Ingenieros Chris Hendy United Kingdom Atkins Hikaru Nakamura Japan Nagoya University Stuart Matthews United Kingdom Building Research Establishment Ltd David Fernández-Ordóñez Switzerland fib Harald Budelmann Germany TU Braunschweig -
TG3.4 - Selection and implementation of interventions/through-life management activities and measures for concrete structures
The focus will be on the selection and implementation of interventions and through-life management activities and measures for concrete structures. Its final goal is to provide the draft on intervention for the new fib MC2020. The basic procedure is updating “Chapter 9: Conservation” of the fib MC2010, considering recent progress in this field.
The initial focus will be on the preparation of technical guidelines for the selection and implementation of interventions dealing with current major intervention methods.
With respect to through-life management activities and measures for concrete structures, a primary objective will be updating “Chapter 9: Conservation” of the fib MC2010, considering recent technical progress and new ideas.
First name Last name Country Affiliation - - - - Etsuji Kikuta Japan Civil Engineering Research Institute for Cold Region Dawei Zhang China Zhejiang University Philip McKenna Ireland Halcrow Group Ltd., a CH2M HILL Company Giuseppe Mancini Italy Politecnico Torino Carmen Andrade Spain Instituto Eduardo Torroja Amir Rahimi Germany Bundesanstalt für Wasserbau Jan Vítek Czech Republic Metrostav a. s. Lojze Bevc Slovenia ZAG Slovenije Koichi Kobayashi Japan Gifu University Jonathon Dyson Australia BCRC Attila Vardai Hungary EMI-TUV SUD Ltd. Francesco Bencardino Italy University of Calabria Christoph Gehlen Germany CBM Takumi Shimomura Japan Nagaoka Univ. of Technology Tamon Ueda Japan Hokkaido University Frank Papworth Australia BCRC Hikaru Nakamura Japan Nagoya University David Fernández-Ordóñez Switzerland fib
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