Abstract
The objective of this paper is to assess the impact of soil axial resistance on initiation of the buckles on sleepers. It also covers the effects of history of pressure and temperature increase on effective axial force as well as the incorporation of external pressure in the Finite Element (FE) models. This is carried out for 6″, 8″, 10″ and 12″ pipelines laying on sleepers with different heights for a range of axial soil frictions and mobilisations. Knowing the sensitivity of buckle initiation to soil parameters can help in simplifying engineering analysis by avoiding repetitive simulations for parameters with less importance.
To carry out the above, a series of FE models including normal and bi-linear axial contacts between pipeline and sleeper / seabed were built in Abaqus FE package and at the point of initiation of the buckles, the effective axial force was extracted by a Python script. FE models were validated by comparison of the simulation results with analytical solutions and experimental results from published literature.
To carry out the above, a series of FE models including normal and bi-linear axial contacts between pipeline and sleeper / seabed were built in Abaqus FE package and at the point of initiation of the buckles, the effective axial force was extracted by a Python script. FE models were validated by comparison of the simulation results with analytical solutions and experimental results from published literature.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering OMAE2016 |
| Subtitle of host publication | Pipelines, Risers, and Subsea Systems |
| Publisher | ASME |
| Pages | 1-7 |
| Number of pages | 7 |
| Volume | 5 |
| ISBN (Print) | 9780791849965 |
| DOIs | |
| Publication status | Published - 2016 |
| Event | ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering - Busan, Korea, Democratic People's Republic of Duration: 19 Jun 2016 → 24 Jun 2016 |
Conference
| Conference | ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering |
|---|---|
| Country/Territory | Korea, Democratic People's Republic of |
| City | Busan |
| Period | 19/06/16 → 24/06/16 |
Bibliographical note
We would like to acknowledge the valuable contribution of Dr. Kasra Farahani, the Technical Director of Z-Subsea Limited and Moosa Esmeaili from University of Aberdeen. It also should be noted that Sriramula’s work within the Lloyd’sRegister Foundation Centre for Safety and Reliability Engineering at the University of Aberdeen is supported by Lloyd’s Register Foundation. The Foundation helps to protect life and property by supporting engineering-related education, public engagement and the application of research.
Keywords
- earth resistance
- pipelines