Location
San Diego, California
Presentation Date
31 Mar 2001, 8:00 am - 9:30 am
Abstract
The performance of pipeline systems under seismic loading is an important consideration in regions subject to earthquakes. Experience from previous seismic events indicates that earthquake-induced permanent ground displacements are one of the key geotechnical hazards to pipelines. This paper briefly describes an evaluation of the vulnerability of a natural gas transmission system to seismic hazards, along with some of the remedial treatments that were implemented. The work was carried out for BC Gas Utility Ltd. in the Lower Mainland of British Columbia, Canada. Initially, a regional study was carried out to identify components of the gas pipeline system that are seismically most vulnerable. Following the regional study, the most vulnerable sites were identified for detailed site-specific analyses with the objective of developing remedial treatment alternatives. Two case histories are described to illustrate some of the options available for seismic upgrading of pipeline systems. The first case history describes a project where ground densification by vibro-replacement was used to reduce the risk of ground deformations at an existing gate station. The second case history describes a project where a new pipeline was installed using the method of horizontal directional drilling (HDD) to avoid potentially liquefiable zones.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
4th International Conference on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
Publisher
University of Missouri--Rolla
Document Version
Final Version
Rights
© 2001 University of Missouri--Rolla, 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
Wijewichreme, Dharma; Mitchell, Allen; and Fitzell, Trevor, "Seismic Evaluation and Retrofit of a Major Natural Gas Transmission System" (2001). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 6.
https://scholarsmine.mst.edu/icrageesd/04icrageesd/session08/6
Included in
Seismic Evaluation and Retrofit of a Major Natural Gas Transmission System
San Diego, California
The performance of pipeline systems under seismic loading is an important consideration in regions subject to earthquakes. Experience from previous seismic events indicates that earthquake-induced permanent ground displacements are one of the key geotechnical hazards to pipelines. This paper briefly describes an evaluation of the vulnerability of a natural gas transmission system to seismic hazards, along with some of the remedial treatments that were implemented. The work was carried out for BC Gas Utility Ltd. in the Lower Mainland of British Columbia, Canada. Initially, a regional study was carried out to identify components of the gas pipeline system that are seismically most vulnerable. Following the regional study, the most vulnerable sites were identified for detailed site-specific analyses with the objective of developing remedial treatment alternatives. Two case histories are described to illustrate some of the options available for seismic upgrading of pipeline systems. The first case history describes a project where ground densification by vibro-replacement was used to reduce the risk of ground deformations at an existing gate station. The second case history describes a project where a new pipeline was installed using the method of horizontal directional drilling (HDD) to avoid potentially liquefiable zones.
