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 |
|---|---|---|---|
| Walraven | Joost | Netherlands | Delft University of Technology |
| Zandi Hanjari | Kamyab | Sweden | Chalmers University of Technology |
| Sykora | Miroslav | Czech Republic | Czech Technical University in Prague |
| Strauss | Alfred | Austria | Univ. Bodenkultur Vienna |
| Steenbergen | Raphaël | Netherlands | TNO Structures and Safety |
| Mancini | Giuseppe | Italy | Politecnico Torino |
| Dieteren | Gerrie | Netherlands | TNO |
| Fernández-Ordóñez | David | Switzerland | fib |
| Matthews | Stuart | United Kingdom | Consulting |
| Kessler | Sylvia | Germany | Helmut-Schmidt-University/ University of the Federal Armed Forces Hamburg |
| Campos e Matos | José | Portugal | University of Minho |
| Braml | Thomas | Germany | Universität der Bundeswehr München |
| Ueda | Tamon | China | Shenzhen University |
| Gong | Fuyuan | China | Zhejiang University |
| Caspeele | Robby | Belgium | Ghent University |
| Coronelli | Dario | Italy | Politecnico di Milano |
| Bigaj-van Vliet | Agnieszka | 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 Diamantidis Dimitris Germany Fachhochschule Regensburg Allaix Diego Lorenzo Italy Politecnico di Torino Prieto Miguel Spain Torroja Inst. of Construction Sciences Achenbach Marcus Germany LGA KdöR Hendriks Max Netherlands Delft University of Technology Holicky Milan Czech Republic Czech Techn. Univ. of Prague - CVUT Thöns Sebastian Germany BAM Federal Inst. for Mat. Research & Testing Linneberg Poul Denmark COWI A/S Faber Michael Denmark Aalborg University Mancini Giuseppe Italy Politecnico Torino Cervenka Jan Czech Republic Cervenka Consulting Ltd Strauss Alfred Austria Univ. Bodenkultur Vienna Sykora Miroslav Czech Republic Czech Technical University in Prague Steenbergen Raphaël Netherlands TNO Structures and Safety Fernández-Ordóñez David Switzerland fib Tanner Peter Spain Cesma Ingenieros Campos e Matos José Portugal University of Minho Castaldo Paolo Italy Politecnico di Torino Gino Diego Italy Politecnico di Torino Glock Christian Germany Technical University of Kaiserslautern Hingorani Ramón Spain Instituto Eduardo Torroja Lara Sarache Carlos Paul Spain Instituto Eduardo Torroja Neves Luis United Kingdom Nottingham University Botte Wouter Belgium Ghent University Bos A. A. Netherlands DIANA FEA bv Sangiorgio Filippo Sweden COWI AB Engen Morten Norway - -
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 Bertagnoli Gabriele Italy Politecnico di Torino Hendriks Max Netherlands Delft University of Technology Dunkelberg Daniel Germany Pirlet & Partner Ingenieurgesellschaft mbh Zandi Hanjari Kamyab Sweden Chalmers University of Technology Kansara Kunal United Kingdom HD & M Mouchel Infrastructure Services Walraven Joost Netherlands Delft University of Technology Cervenka Jan Czech Republic Cervenka Consulting Ltd Belletti Beatrice Italy Univ. degli Studi di Parma Andrade Carmen Spain - Meda Alberto Italy University of Rome “Tor Vergata” Rinaldi Zila Italy University of Rome “Tor Vergata” Strauss Alfred Austria Univ. Bodenkultur Vienna Zilch Konrad Germany - Dieteren Gerrie Netherlands TNO Zwicky Daia Switzerland Univ. of Applied Sciences Fribourg Vardai Attila Hungary EMI-TUV SUD Ltd. de Boer Ane Netherlands Rijkswaterstaat Centre for Infrastructure & Environment Chrysostomou Christis Cyprus Cyprus University of Technology Matthews Stuart United Kingdom Consulting Fernández-Ordóñez David Switzerland fib Sigrist Viktor Switzerland Lucerne School of Engineering and Architecture León F. Javier Spain FHECOR - Ingenieros Consultores Kuchma Daniel United States University of Illinois Yang Yuguang Netherlands TU Delft Tondolo Francesco Italy Politecnico di Torino Ueda Tamon China Shenzhen University Nakamura Hikaru Japan Nagoya University Freitas Jeovan Norway Private Coronelli Dario Italy Politecnico di Milano Hendy Chris United Kingdom Atkins Hendy Chris United Kingdom Atkins Bigaj-van Vliet Agnieszka Netherlands TNO-Built Environment + Geosciences Bos A. A. Netherlands DIANA FEA bv -
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 Bertagnoli Gabriele Italy Politecnico di Torino Lehky David Czech Republic Brno University of Technology Novak Drahomir Czech Republic Technical University of Brno Orlowsky Jeanette Germany Technische Universität Dortmund Maas Stefan Luxembourg Université du Luxembourg Petraschek Thomas Austria OBB-Infrastruktur AG Ahrens Mark Alexander Germany Ruhr-Univ. Bochum Hansen Michael Germany Leibniz Universität Hannover Lavorato N/A Italy University of Rome Lombaert Geert Belgium University of Leuven Ralbosky Marian Austria Austrian Research Institute Zabel Volkmar Germany Bauhaus University Weimar Gulikers Joost Netherlands Rijkswaterstaat Centre for Infrastructure Mancini Giuseppe Italy Politecnico Torino Andrade Carmen Spain - Meda Alberto Italy University of Rome “Tor Vergata” Strauss Alfred Austria Univ. Bodenkultur Vienna Sykora Miroslav Czech Republic Czech Technical University in Prague Dieteren Gerrie Netherlands TNO Dyson Jonathon Australia BCRC Pielstick Brett United States - Matthews Stuart United Kingdom Consulting Fernández-Ordóñez David Switzerland fib Kessler Sylvia Germany Helmut-Schmidt-University/ University of the Federal Armed Forces Hamburg Tanner Peter Spain Cesma Ingenieros Campos e Matos José Portugal University of Minho León F. Javier Spain FHECOR - Ingenieros Consultores Monti Giorgio Italy Sapienza Università di Roma Tondolo Francesco Italy Politecnico di Torino Braml Thomas Germany Universität der Bundeswehr München Nakamura Hikaru Japan Nagoya University Casas Rius Joan Spain Tech. Univ. of Catalunya, UPC-BarcelonaTech Gorski Marcin Poland - Caspeele Robby Belgium Ghent University Apostolidi Eftychia Austria University BOKU (University ofNatural Resources and Life Sciences) Hendy Chris United Kingdom Atkins Hendy Chris United Kingdom Atkins -
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 Kikuta Etsuji Japan Civil Engineering Research Institute for Cold Region Zhang Dawei China Zhejiang University McKenna Philip Ireland Halcrow Group Ltd., a CH2M HILL Company Mancini Giuseppe Italy Politecnico Torino Andrade Carmen Spain - Rahimi Amir Germany Bundesanstalt für Wasserbau Vítek Jan Czech Republic Metrostav a. s. Bevc Lojze Slovenia ZAG Slovenije Kobayashi Koichi Japan Gifu University Dyson Jonathon Australia BCRC Vardai Attila Hungary EMI-TUV SUD Ltd. Bencardino Francesco Italy University of Calabria Gehlen Christoph Germany CBM Papworth Frank Australia BCRC Fernández-Ordóñez David Switzerland fib Campos e Matos José Portugal University of Minho León F. Javier Spain FHECOR - Ingenieros Consultores Su Meini United Kingdom University of Manchester Triantafillou Thanasis Greece University of Patras Lu Xilin China Tongji University Menna Costantino Italy University of Naples Federico II Randl Norbert Austria Carinthia Univ. of Applied Sciences Nakamura Hikaru Japan Nagoya University Ueda Tamon China Shenzhen University Saetta Anna Italy Università Iuav di Venezia Savoia Marco Italy University of Bologna Zhu Jihua China Shenzhen University Corres Peiretti Hugo Spain FHECOR Ingenieros Consultores Del Zoppo Marta Italy University of Naples Federico II -
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 Zonta Daniele United Kingdom University of Strathclyde Bos A. A. Netherlands DIANA FEA bv
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