Overview
ABSTRACT
As bridges are engineering work which is destined to last for several decades and even centuries, they are bound to suffer from damage and disruption. The causes are diverse: climatic disturbances (wind, rain, earthquakes), ageing materials, accidents, eventual consequences of the traffic. It is thus necessary to regularly assess the state of the structure and the equipment ion order to verify the good functioning and security of the bridge. When a reinforcement or repair is required, methodologies are to be followed and principles are to be respected. This article notably focuses on the case of metallic bridges and details the main repair methods as well as the measures to be implemented in order to prevent future deteriorations.
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Read the articleAUTHORS
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Daniel POINEAU: Ingénieur divisionnaire des Travaux Publics de l'Etat – Former Technical Director of Sétra's Major Structures Division - Professor at the École nationale des Travaux Publics de l'État, the École spéciale des Travaux Publics and the École supérieure des ingénieurs des Travaux de la Construction - Consultant
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Jean-Armand CALGARO: Engineer General of Ponts et Chaussées - Permanent member of the Conseil Général de l'Environnement et du Développement Durable (General Council for the Environment and Sustainable Development) - Professor at the Centre des Hautes Études de la Construction - This edition is an update of the article by Roger LACROIX and Jean-Armand CALGARO, entitled Projet de renforcement ou de réparation d'un pont, published in 1999.
INTRODUCTION
An existing bridge was designed to provide a certain service. However, due to design and/or execution errors, ageing materials, environmental attacks, aggressive traffic, accidental actions, etc., the bridge may be in disrepair and no longer provide the intended service. It is therefore necessary to repair or even replace it.
In some cases, the load-bearing capacity and geometry of an existing bridge are no longer adapted to the new needs arising from increased traffic and loads. In most cases, this means reinforcing the structure.
The 1
er
part of this dossier,
The fourth and final section focuses on steel bridges.
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Bridge reinforcement or repair project
History of steel bridges
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