Environmental assessment of an offshore infrastructure using a beltline of concrete caissons and impact of logistical decisions - IMT Mines Alès Accéder directement au contenu
Article Dans Une Revue Revue Paralia Année : 2020

Environmental assessment of an offshore infrastructure using a beltline of concrete caissons and impact of logistical decisions

Résumé

Mainly due to the attraction of the coastal areas, projects encroaching on the sea are growing in France and worldwide. Besides risk management (storms and flooding), coastal erosion and biodiversity loss, the issue of matter and energy consumption appears of importance for such infrastructures, inducing environmental impacts at a global scale. This study aims at quantifying these environmental impacts, using Life Cycle Assessment (LCA), applied to an offshore infrastructure using a beltline of concrete caissons. This technology has been used in Monaco, for the Anse du Portier’s extension, because it ensured a good wave resistance, a cost reduction (works in open sea being limited) and a soil level being in accordance with architectural landscape constraints and sea view. A realistic case study has been used to scale the assessment, suggesting optimal solutions based on the current knowledge. The main construction steps inducing environmental impacts as well as the opportunities of technical improvements allowing their reduction have been identified and characterized. Furthermore, effects of logistical decisions (for transportation distances and sourcing) on the global performances have been quantified. Results highlight the importance of supply chain choices on global performances. Territorial constraints can reduce logistical options, due to local deposit size and availability, time constraints for the construction, storage and loading capabilities on site. These limitations are discussed as well as the environmental concern integration in the project management.
Fichier principal
Vignette du fichier
Langlois_al_Paralia_2020.pdf (396.8 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03219372 , version 1 (10-05-2021)

Identifiants

Citer

Juliette Langlois, Guillaume Junqua, Jean-Claude Souche, Sylvain Pioch. Environmental assessment of an offshore infrastructure using a beltline of concrete caissons and impact of logistical decisions. Revue Paralia, 2020, pp.451-458. ⟨10.5150/jngcgc.2020.051⟩. ⟨hal-03219372⟩
187 Consultations
307 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More