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 |
| Miroslav | Sykora | Czech Republic | Czech Technical University in Prague |
| Alfred | Strauss | Austria | Univ. Bodenkultur Vienna |
| Raphaël | Steenbergen | Netherlands | TNO Structures and Safety |
| Giuseppe | Mancini | Italy | Politecnico Torino |
| Gerrie | Dieteren | Netherlands | TNO |
| David | Fernández-Ordóñez | Switzerland | fib |
| Stuart | Matthews | United Kingdom | Consulting |
| Sylvia | Kessler | Germany | Helmut-Schmidt-University/ University of the Federal Armed Forces Hamburg |
| José | Campos e Matos | Portugal | University of Minho |
| Thomas | Braml | Germany | Universität der Bundeswehr München |
| Tamon | Ueda | China | Shenzhen University |
| Fuyuan | Gong | China | Zhejiang University |
| Robby | Caspeele | Belgium | Ghent University |
| Dario | Coronelli | Italy | Politecnico di Milano |
| 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
- TG3.5 - Forensic engineering
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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 full-probabilistic modelling of the structural safety and semi-probabilistic assessment methods for existing structures.
The TG aims to (i) resolve pending questions with respect to the full-probabilistic assessment and target safety levels for the assessment and retrofitting of existing structures, and (ii) support the risk and reliability related questions arising due to the developments in TG3.2, TG3.3 and TG3.4.
Initially, attention will be given to developing a technical guideline for assigning target reliabilities and making a suitable risk differentiation for existing and monumental structures, considering both individuals and groups.
First name Last name Country Affiliation Dimitris Diamantidis Germany Fachhochschule Regensburg Diego Lorenzo Allaix Italy Politecnico di Torino Miguel Prieto Spain Torroja Inst. of Construction Sciences Marcus Achenbach Germany LGA KdöR Max Hendriks Netherlands Delft University of Technology Milan Holicky Czech Republic Czech Techn. Univ. of Prague - CVUT Sebastian Thöns Germany BAM Federal Inst. for Mat. Research & Testing Poul Linneberg Denmark COWI A/S Michael Faber Denmark Aalborg University Giuseppe Mancini Italy Politecnico Torino Jan Cervenka Czech Republic Cervenka Consulting Ltd Alfred Strauss Austria Univ. Bodenkultur Vienna Miroslav Sykora Czech Republic Czech Technical University in Prague Raphaël Steenbergen Netherlands TNO Structures and Safety David Fernández-Ordóñez Switzerland fib Peter Tanner Spain Cesma Ingenieros José Campos e Matos Portugal University of Minho Paolo Castaldo Italy Politecnico di Torino Diego Gino Italy Politecnico di Torino Christian Glock Germany Technical University of Kaiserslautern Ramón Hingorani Spain Instituto Eduardo Torroja Carlos Paul Lara Sarache Spain Instituto Eduardo Torroja Luis Neves United Kingdom Nottingham University Wouter Botte Belgium Ghent University Ab Alexander Bos Netherlands DIANA FEA bv Filippo Sangiorgio Sweden COWI AB Morten Engen Norway - Lukas Novak Czech Republic Brno University of Technology Aurelio Muttoni Switzerland École polytechnique fédérale de Lausanne (EPF Lausanne) Mayer Melhem Australia Monash University Peter Kotes Slovakia University of Zilina Ehsan Noroozinejad Iran, Islamic Republic of Graduate University of Advanced Technology João André Portugal - -
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 Gabriele Bertagnoli Italy Politecnico di Torino Max Hendriks Netherlands Delft University of Technology Daniel Dunkelberg Germany Pirlet & Partner Ingenieurgesellschaft mbh Kamyab Zandi Hanjari Sweden Chalmers University of Technology Kunal Kansara United Kingdom HD & M Mouchel Infrastructure Services 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 - 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 - Gerrie Dieteren Netherlands TNO Daia Zwicky Switzerland Univ. of Applied Sciences Fribourg Attila Vardai Hungary EMI-TUV SUD Ltd. Ane de Boer Netherlands Rijkswaterstaat Centre for Infrastructure & Environment Christis Chrysostomou Cyprus Cyprus University of Technology Stuart Matthews United Kingdom Consulting David Fernández-Ordóñez Switzerland fib Viktor Sigrist Switzerland Lucerne School of Engineering and Architecture F. Javier León Spain FHECOR - Ingenieros Consultores Daniel Kuchma United States University of Illinois Yuguang Yang Netherlands TU Delft Francesco Tondolo Italy Politecnico di Torino Tamon Ueda China Shenzhen University Hikaru Nakamura Japan Nagoya University Jeovan Freitas Norway Private Dario Coronelli Italy Politecnico di Milano Chris Hendy United Kingdom Atkins Chris Hendy United Kingdom Atkins Agnieszka Bigaj-van Vliet Netherlands TNO-Built Environment + Geosciences Ab Alexander Bos Netherlands DIANA FEA bv Ehsan Noroozinejad Iran, Islamic Republic of Graduate University of Advanced Technology -
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 Gabriele Bertagnoli Italy Politecnico di Torino David Lehky Czech Republic Brno University of Technology Drahomir Novak Czech Republic Technical University of Brno Stefan Maas Luxembourg Université du Luxembourg Thomas Petraschek Austria OBB-Infrastruktur AG Mark Alexander Ahrens Germany Ruhr-Univ. Bochum Michael Hansen Germany Leibniz Universität Hannover N/A Lavorato Italy University of Rome Geert Lombaert Belgium University of Leuven Marian Ralbosky Austria Austrian Research Institute Joost Gulikers Netherlands Rijkswaterstaat Centre for Infrastructure Giuseppe Mancini Italy Politecnico Torino Carmen Andrade Spain - Alberto Meda Italy University of Rome “Tor Vergata” Alfred Strauss Austria Univ. Bodenkultur Vienna Miroslav Sykora Czech Republic Czech Technical University in Prague Gerrie Dieteren Netherlands TNO Jonathon Dyson Australia BCRC Brett Pielstick United States - Stuart Matthews United Kingdom Consulting David Fernández-Ordóñez Switzerland fib Sylvia Kessler Germany Helmut-Schmidt-University/ University of the Federal Armed Forces Hamburg Peter Tanner Spain Cesma Ingenieros José Campos e Matos Portugal University of Minho F. Javier León Spain FHECOR - Ingenieros Consultores Giorgio Monti Italy Sapienza Università di Roma Francesco Tondolo Italy Politecnico di Torino Thomas Braml Germany Universität der Bundeswehr München Joan Casas Rius Spain Tech. Univ. of Catalunya, UPC-BarcelonaTech Marcin Gorski Poland - Robby Caspeele Belgium Ghent University Eftychia Apostolidi Austria University BOKU (University ofNatural Resources and Life Sciences) Chris Hendy United Kingdom Atkins Chris Hendy United Kingdom Atkins Manfred Keuser Germany BUNG Ingenieure A Milan Holicky Czech Republic Czech Techn. Univ. of Prague - CVUT Camillo Nuti Italy Università degli Studi Roma Tre Marcus Hoffmann Austria - Emilio Bastidas-Arteaga France - Tamon Ueda China Shenzhen University Florian Zimmert Germany - Frédéric Duprat France INSA Toulouse -
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 - 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 Frank Papworth Australia BCRC David Fernández-Ordóñez Switzerland fib José Campos e Matos Portugal University of Minho F. Javier León Spain FHECOR - Ingenieros Consultores Meini Su United Kingdom University of Manchester Thanasis Triantafillou Greece University of Patras Xilin Lu China Tongji University Costantino Menna Italy University of Naples Federico II Norbert Randl Austria Carinthia Univ. of Applied Sciences Hikaru Nakamura Japan Nagoya University Tamon Ueda China Shenzhen University Anna Saetta Italy Università Iuav di Venezia Marco Savoia Italy University of Bologna Jihua Zhu China Shenzhen University Hugo Corres Peiretti Spain FHECOR Ingenieros Consultores Marta Del Zoppo Italy University of Naples Federico II Takumi Shimomura Japan Nagaoka Univ. of Technology Alessio Cascardi Italy University of Salento -
TG3.5 - Forensic engineering
We have an enormous and an ever-increasing heritage of reinforced and prestressed concrete structures, many of which are currently approaching the end of their intended service life. However, there are pressing societal, economic and environmental needs to safely extend the service lives of many of these structures. This poses a delicate and challenging task if we are to make appropriate decisions on the through-life management and care of these constructed assets to achieve this while avoiding transferring an excessive burden onto the next generation. To do this we need a better understanding of the real behaviours of structures, why they may not achieved the required performance and, ultimately, what may cause them to fail.
First name Last name Country Affiliation Daniele Zonta United Kingdom University of Strathclyde Ab Alexander Bos Netherlands DIANA FEA bv Ehsan Noroozinejad Iran, Islamic Republic of Graduate University of Advanced Technology
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