Frédéric Cherqui

Frédéric Cherqui
Claude Bernard University Lyon 1 | UCBL · DEEP

A/Prof

About

88
Publications
23,668
Reads
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729
Citations
Introduction
TOPICS OF INTEREST: Stormwater control measures and sewer asset management, Nature-based Solutions, innovative monitoring, and sustainable urban water management -------------------------------------------------------------------------------------------------------------------------------------- POSITION: Associated Professor at INSA Lyon, Lyon, France (since 2005), Teaching at IUT Lyon, Lyon, France (since 2005), Visiting academic at University of Melbourne, Burnley, Australia (2018-2020)
Additional affiliations
September 2018 - September 2020
University of Melbourne
Position
  • Visiting academic
Description
  • The position has been funded by the by the European Union's Horizon 2020 research and innovation programme under Grant Agreement no. 786566 - Project Mind4Stormwater: https://mind4stormwater.org
September 2006 - present
Claude Bernard University Lyon 1
Position
  • Professor (Assistant)
Education
June 2016 - June 2016
Institut National des Sciences Appliquées de Lyon
Field of study
  • Civil engineering - Urban hydroloogy
September 2002 - December 2005
La Rochelle Université
Field of study
  • Civil engineering
September 2001 - June 2002
MINES ParisTech
Field of study
  • Civil engineering

Publications

Publications (88)
Article
Full-text available
La façon de gérer les eaux pluviales urbaines est en train de changer rapidement pour répondre à des enjeux de plus en plus nombreux et complexes : maîtrise des flux d’eau et de polluants produits par la ville, préservation des ressources, meilleure intégration dans le paysage, prise en compte d’objectifs sociaux, économiques, climatiques, écologiq...
Article
Full-text available
Studies in Real−Time Control (RTC) Rainwater Harvesting Systems (RWH) have to date been limited to the control of single storages, leaving the potential benefits of operating multiple storages in a coordinated manner largely untested. In this study, we aimed to design an optimization‐based RTC strategy that can operate multiple storages in a coordi...
Chapter
This book presents the advancements made in applied metrology in the field of Urban Drainage and Storm water Management over the past two decades in scientific research as well as in practical applications. Given the broadness of this subject (measuring principles, uncertainty in data, data validation, data storage and communication, design, mainte...
Article
Full-text available
Stormwater Control Measures (SCMs) are increasingly applied to capture and utilise urban runoff to augment water supply, reduce flood risk, and to restore natural flow regimes in receiving waters. New advances in Real-Time Control (RTC) technology offer the potential to dynamically optimise SCM performance to meet multi-objectives, without the need...
Article
Full-text available
Water infrastructure in cities is complex and requires proactive management to optimise function. The scale and distribution of assets across municipalities requires affordable systems which can trigger alerts. Systems underpinned by low-cost sensors could meet increasing monitoring needs: more assets, more often, and at a better resolution. Howeve...
Technical Report
Full-text available
Centré sur la contamination des eaux pluviales par les micropolluants, l’objectif de MicroMegas était d’évaluer et de comparer les systèmes de gestion des eaux pluviales centralisés et les dispositifs à la source (noues, tranchées, parking poreux) en termes d’efficacité vis-à-vis des micropolluants, mais aussi en termes de perceptions/représentatio...
Article
Full-text available
Use of real time control (RTC) technology in rainwater harvesting systems can improve performance across water supply, flood protection, and environmental flow provision. Such systems make the most of rainfall forecast information, to release water prior to storm events and thus minimize uncontrolled overflows. To date, most advanced applications h...
Article
Full-text available
Sewer asset management gained momentum and importance in recent years due to economic considerations , since infrastructure maintenance and rehabilitation directly represent major investments. Because physical urban water infrastructure has life expectancies of up to 100 years or more, contemporary urban drainage systems are strongly influenced by...
Conference Paper
Full-text available
According to Raymond et al. (2017) “nature-based solutions (NBS) are solutions to societal challenges that are inspired and supported by nature”. Such solutions offer a great potential in addressing a variety of challenges in many domains (H2020, 2015), and providing ecosystemic services (Nesshöver et al., 2017). Regarding urban water, “NBS can con...
Article
Full-text available
Deterioration models can be used to forecast the evolution of the condition of the sewer network under different investment strategies. Models are calibrated using condition scores obtained from sewer visual inspection. Many studies highlighted the uncertainties in the procedure of sewer condition assessment, mainly due to the subjectivity of the c...
Conference Paper
Full-text available
Maintenance of stormwater control measures (SCMs) is perhaps the biggest threat to their adoption and performance. Assuring long-term performance which matches the design intent requires suitable monitoring, at the right place and right time, to intervene before malfunctions occur. Doing so has traditionally been very expensive and labour-intensive...
Conference Paper
Full-text available
La question de l'entretien des techniques alternatives émerge en France comme à l'étranger. Plusieurs raisons peuvent expliquer les difficultés actuelles : des ressources limitées ne permettant pas de suivre tous les ouvrages, des modèles multi-paramètres difficilement adaptables d'un ouvrage à l'autre, ou encore la méconnaissance de l'impact des a...
Article
Share Link:https://authors.elsevier.com/c/1YjmB3IhXMfaUp Sewer condition prediction is a fundamental element of proactive maintenance programs. The prediction relies mostly on the assessed condition of inspected segments, generally based on CCTV reports. However, several sources of uncertainty affect the condition assessment and may lead to ineffi...
Article
The rainfalls design method is an old and practical method for designing BMPs. Despite its limitations, it can be useful in two situations: for the first design of the structures before verifying their operation with a more complete method or to design very small structures in the context of a rainwater management at a little scale. However, in its...
Article
Alternative techniques to the stormwater drainage system are based on the general principles of temporary storage, controlled flow evacuation and infiltration. These techniques have existed for a long time but are designated under various names, designating facilities which not always well identified. This lack of rigor does not facilitate their un...
Article
The article presents some of the discussions carried out by the Scientific and Technical Association for Water and the Environment (ASTEE) work groups on asset management of drinking water and sewer networks…. , combining feedback from network managers and the more scientific approaches proposed and tested by research laboratories. It presents more...
Article
Urban green spaces are vital parts of any city due to their capacity to provide a large number of urban services to a wide range of stakeholders. However, since urban green spaces can consume large areas of the city, where land is both scarce and expensive, planners and managers are usually faced with conflicting challenges. They must endeavour to...
Article
L'article présente une vue globale de la réflexion réalisée par les groupes de travail de l'ASTEE sur la gestion patrimoniale des réseaux d'eau potable et d'assainissement croisant des retours d'expérience des gestionnaires de réseaux et des approches plus scientifiques proposées et testées par les laboratoires de recherche. Il présente plus spécif...
Article
Full-text available
Closed Circuit Television Inspection is used since decades as industry standard for sewer system inspection and structural performance evaluation. In current practice, inspection data are helpful to support asset management decisions. However, the quality and uncertainty of sewer condition assessment is rarely questioned. This article presents a me...
Technical Report
Full-text available
Synthèse des résultats scientifiques de l'observatoire sur 2013-2016 QUELQUES CLES DE LECTURE DU DOCUMENT Le rapport est divisé en 5 PARTIES. 1- Présentation du dispositif d’observation, la démarche scientifique associée et le mode actuel de gestion des données. 2- Résultats de recherche obtenus à partir des observations menées au sein de l’OTHU....
Article
Full-text available
Le patrimoine des ouvrages alternatifs de gestion des eaux pluviales ne cesse de s’accroître depuis maintenant plusieurs décennies. Pour les collectivités, organiser le recensement et développer des méthodes pour optimiser le fonctionnement et l’exploitation sur le long terme de ces ouvrages devient donc une préoccupation majeure. À partir du retou...
Article
Full-text available
Une gestion patrimoniale efficace des infrastructures dépend fortement de la disponibilité des données issues des domaines techniques, environnementaux, socio-économiques et financiers. Aussi il est important de mettre en oeuvre plusieurs modes appropriés pour collecter, formaliser, qualifier et stocker ces données. Cet article propose ici un balay...
Conference Paper
Full-text available
Le nécessaire développement des techniques alternatives, depuis maintenant plusieurs décennies, en complément ou en remplacement des réseaux existants pose la question de leur gestion sur le long terme. Ces aménagements, rarement dédiés uniquement à la gestion des eaux pluviales, assurent ainsi d’autres fonctions en lien avec la ville et ses usager...
Article
Full-text available
Sustainable water management is a worldwide challenge for the twenty-first century. It involves replacing traditional management approaches with a new concept, often referred to as sustainable urban water management (SUWM). This paradigm shift means that SUWM systems must include new services, some of which have already emerged. However, no publica...
Article
Full-text available
One key goal of sewer inspection programmes is to target segments in the worst condition. Despite the development of deterioration models, the influence of available data on models’ predictive power has not been studied in depth yet. In this article, numerical experiments have been conducted to answer three main questions: (1) How can the data most...
Article
Full-text available
Utilities are faced with the challenge of how to manage their assets cost-effectively while providing safe and reliable services to their customers (Marlow et al., 2007). A small number of utilities have completely inspected their sewer networks. Therefore, the use of an asset stock's sample to calibrate deterioration models and to study scenarios...
Article
Full-text available
The purpose of this paper is to discuss the influence of data availability and quality within a utility to prioritise inspection and rehabilitation needs. Data are required in order to predict the structural condition of assets. Lack of data and budget limitation do not encourage utilities to evolve from reactive to proactive management. Methods an...
Article
Full-text available
One key aspect of sewer inspection programs is the prediction of sewer condition. Despite the development of deterioration models, the influence of available data on models' predictive power has not been studied in depth. In this article, numerical experiments on a semi-virtual asset stock have been conducted to answer two main questions: how to es...
Article
Full-text available
In the context of new challenges and emerging needs for transparency regarding users, urban water management is obliged to forge links between different technical fields. This implies managing interfaces between multiple stakeholders on the one hand, and ensuring the adaptability and sustainability of technical infrastructures on the other hand. In...
Article
Full-text available
Asset management is an increasing concern for the water and wastewater industry. Condition assessment of sewer segments is an important component of sewer asset management and relies mostly on visual inspection. Observed defects are translated into a score for each segment. Although most protocols give a segment a condition grade by comparing its s...
Article
For many years water management has evolved to meet various challenges. The quality of aquatic environments has become a major issue since the creation of the European Water Framework Directive No 2000/60. In this framework, the proposed indicators are technical and difficult to understand for most involved and/or impacted stakeholders in the manag...
Article
Souvent percus comme de simples désagréments, les débordements lies a un dysfonctionnement du réseau d'assainissement apparaissent comme une veritable problématique a traiter pour les gestionnaires et les élus désireux de limiter les nuisances en milieu urbain. Ces dysfonctionnements peuvent etre de causes multiples: bouchage par Les feuilles ou Le...
Book
Les réseaux d'eau potable (AEP) et d'assainissement comme toutes les infrastructures publiques constituent des investissements importants, qui nécessitent une gestion durable tout a long de leur cycle de vie, afin d'assurer la continuité du service à un niveau de performance adéquat aux usagers. Deux facteurs importants sont à prendre en compte et...
Article
Full-text available
This paper presents the first real implementation of INDIGAU asset management toolbox based on French national RERAU methodology. This toolbox allows the utility manager or consultant to define a rehabilitation program using CCTV reports and other indicators such as economic, social or environmental indicators. The methodology is described and each...
Article
Full-text available
Sustainable water management is a global challenge for the 21st century. One key aspect remains protection against urban flooding. The main objective is to ensure or maintain an adequate level of service for all inhabitants. However, level of service is still difficult to assess and the high-risk locations difficult to identify. In this article, we...
Article
Full-text available
In common with most infrastructure systems, sewers are often inspected visually. Currently, the results from these inspections inform decisions for significant investments regarding sewer rehabilitation or replacement. In practice, the quality of the data and its analysis are not questioned although psychological research indicates that, as a conse...
Article
Full-text available
RÉSUMÉ L'une des questions centrales de la gestion de l'assainissement dans la ville de demain concernera la mesure objective du niveau de service réellement rendu aux usagers. Le développement rapide de systèmes alternatifs, collectifs ou non, aussi bien pour les eaux usées que pour les eaux pluviales, venant cohabiter avec les systèmes traditionn...
Article
Full-text available
La gestion patrimoniale des réseaux d'assainissement est un enjeu de société. La connaissance de l'état de santé d'un patrimoine indispensable à toute stratégie de gestion. L'évaluation de l'état d'un tronçon du réseau d'assainissement est donc un enjeu majeur et les inspections visuelles constituent actuellement la méthode d'investigation privilég...