• COM3: Existing concrete

    COM3: Existing Concrete Structures

  • COM3: Existing concrete

    COM3: Existing Concrete Structures

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. 

 

Matthews StuartCommission Chair
Alfred Strauss
Giuseppe ManciniDeputy Chair
Robby Caspeele

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 Technical University of Munich
José Campos e Matos Portugal University of Minho
Thomas Braml Germany Universität der Bundeswehr München
Tamon Ueda Japan Hokkaido University
Fuyuan Gong China Zhejiang University
Robby Caspeele Belgium Ghent University
Dario Coronelli Italy Politecnico di Milano

  • 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.


    Miroslav SykoraConvener
    Miroslav Sykora
    Raphaël SteenbergenCo-Convener
    Raphaël Steenbergen

    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
    Jürgen Schnell Germany University of Kaiserslautern
    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
    Morten Engen Norway Multiconsult AS
    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

  • 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.


    Joost WalravenConvener
    Joost Walraven
    Dario CoronelliCo-Convener
    Dario Coronelli

    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 Instituto Eduardo Torroja
    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.
    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 Japan Hokkaido 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

  • 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.


    Sylvia KesslerConvener
    Sylvia Kessler
    José Campos e MatosCo-Convener
    José Campos e Matos

    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
    Jeanette Orlowsky Germany Technische Universität Dortmund
    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
    Volkmar Zabel Germany Bauhaus University Weimar
    Joost Gulikers Netherlands Rijkswaterstaat Centre for Infrastructure
    Giuseppe Mancini Italy Politecnico Torino
    Carmen Andrade Spain Instituto Eduardo Torroja
    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 Private
    Stuart Matthews United Kingdom Consulting
    David Fernández-Ordóñez Switzerland fib
    Sylvia Kessler Germany Technical University of Munich
    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
    Hikaru Nakamura Japan Nagoya University
    Joan Casas Rius Spain Tech. Univ. of Catalunya, UPC-BarcelonaTech
    Marcin Gorski Poland Private
    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

  • 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.


    Tamon UedaConvener
    Tamon Ueda
    Giuseppe ManciniCo-Convener
    Giuseppe Mancini

    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
    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 Japan Hokkaido 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

  • 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.


    Daniele ZontaConvener
    Daniele Zonta

    First name Last name Country Affiliation
    - - - -
    Daniele Zonta United Kingdom University of Strathclyde

 

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