A limit states design approach has been developed for geotechnical loads using a strain-based design format. This approach addresses the high level of uncertainty associated with the loading processed, which has limited the availability of design guidance in the past.
Working as part of a joint industry project, we have carried out a project to calibrate risk-consistent limit states checks that can be used for a range of strain demand and capacity distributions applicable to geotechnical loads.
- Developed checks for local buckling and rupture;
- Defined criteria for selecting the characteristic strain demand and capacity to be used in the checks;
- Considered temporal and spatial characteristics of the loading process; and
- Calibrated a set of safety parameters that meet allowable failure probabilities for relevant pipelines.
Dr. Maher Nessim is presenting the results of this project at the upcoming International Pipeline Conference in Calgary, Alberta on September 26, 2018 at 10:30 AM to 12:00 PM. The presentation will be in Telus McLeod E4. You will learn about the development of the limit states design checks for geotechnical loads that can be applied to both the design of new pipelines and the assessment of existing pipelines.
The entire paper – “Limit States Design Checks for Geotechnical Loads” – is available through the 2018 International Pipeline Conference.