What is it about?
Increasing reliability of pipelines becomes a real challenge at all stages: design, con-struction and operation of pipeline systems. It is very important to determine the behaviour of the constructed pipeline under the operational and environmental loads using the design model in ac-cordance with that one adopted in the rules and regulations. This article presents the simulation of pipeline in permafrost.
Featured Image
Photo by Mike Benna on Unsplash
Why is it important?
The evaluation of the stress-strain state is given herein and the areas of the stress concentration are detected with the account for different loads occurred during the pipeline operation. Information obtained from the assessment of the stress-strain state of the pipeline allows determining sections in pre-emergency state (even before damages) and take all the necessary measures for eliminating them, thus increasing the pipeline system reliability. It is shown that the most critical pipeline cross-section is observed at the point of transition from one environment to another. The maximum strains decrease the level of the pipeline reliability. The finite element model is presented to determine the pipeline sections in pre-emergency state.
Perspectives
The strength analysis of the pipeline showed that buckling or sagging of its sections resulted in unallowa-ble stresses. Larger pipeline sagging produce plastic deformations. Thus, the estimation of the stress-strain state and pipeline sections mostly exposed to loads, including those static and dynamic, is the im-portant factor in providing a safe operation of the pipeline.In order to increase the pipeline serviceability and estimate its technical conditions, it is advisable to timely conduct the technical diagnostics and strength analysis using the finite element method.
Doctor Petr Burkov
Tomsk State University of Architecture and Building
Read the Original
This page is a summary of: Stress-strain analysis of pipelines laid in permafrost, IOP Conference Series Earth and Environmental Science, September 2016, Institute of Physics Publishing,
DOI: 10.1088/1755-1315/43/1/012080.
You can read the full text:
Contributors
The following have contributed to this page
