Location
Chicago, Illinois
Date
02 May 2013, 2:00 pm - 3:30 pm
Abstract
The marine terminal of Bejaia is a zone of storage of hydrocarbon liquids. It consists of sixteen cylindrical floating roof steel tanks founded on a reconstituted and compacted granular fill. At the end of 1980s, after about 25 years of satisfactory service, the tanks were subjected to settlements, ovalization and tilting. Because of a distortion of the steel tank walls and jamming of the floating roof, a shear failure was evident and some tanks were considered unsafe for service. A comprehensive geotechnical investigation was conducted to evaluate the subsurface conditions of the site and to provide recommendations for foundation repair or retrofit of existing tanks as well as foundation design for new tanks and related facilities. It was concluded that the soils underneath each tank to be improved. Micropiling has been chosen to strengthen the soil beneath the foundation. The proposed paper describes and discusses the case study, the method of treatment adopted in the field and the results of numerical modeling, and gives some lessons learnt.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Ramdane, Bahar; Omar, Sadaoui; and Djahid, Amzal, "Differential Settlements of Cylindrical Steel Storage Tanks: Case of the Marine Terminal of Bejaia" (2013). International Conference on Case Histories in Geotechnical Engineering. 12.
https://scholarsmine.mst.edu/icchge/7icchge/session02/12
Differential Settlements of Cylindrical Steel Storage Tanks: Case of the Marine Terminal of Bejaia
Chicago, Illinois
The marine terminal of Bejaia is a zone of storage of hydrocarbon liquids. It consists of sixteen cylindrical floating roof steel tanks founded on a reconstituted and compacted granular fill. At the end of 1980s, after about 25 years of satisfactory service, the tanks were subjected to settlements, ovalization and tilting. Because of a distortion of the steel tank walls and jamming of the floating roof, a shear failure was evident and some tanks were considered unsafe for service. A comprehensive geotechnical investigation was conducted to evaluate the subsurface conditions of the site and to provide recommendations for foundation repair or retrofit of existing tanks as well as foundation design for new tanks and related facilities. It was concluded that the soils underneath each tank to be improved. Micropiling has been chosen to strengthen the soil beneath the foundation. The proposed paper describes and discusses the case study, the method of treatment adopted in the field and the results of numerical modeling, and gives some lessons learnt.
