PIPELINE UPHEAVAL BUCKLING IN CLAYEY BACKFILL USING NUMERICAL ANALYSIS

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KOOCHEKALI A.; GATMIRI B.; KOOCHEKALI A.

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Journal Paper

Paper Information

Journal: INTERNATIONAL JOURNAL OF MARINE SCIENCE AND ENGINEERING Year:2013 | Volume:3 | Issue:2 Page(s): 43-50

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Information Journal Paper

Title

PIPELINE UPHEAVAL BUCKLING IN CLAYEY BACKFILL USING NUMERICAL ANALYSIS

Author(s)

KOOCHEKALI A. | GATMIRI B. | KOOCHEKALI A. | Issue Writer Certificate

Keywords

ARBITRARY LAGRANGIAN-EULERIAN ANALYSIS

EMBEDMENT DEPTH

SUBSEA PIPELINE

UPLIFT MECHANISM

UPLIFT RESISTANCE

Abstract

Offshore pipelines used for oil and gas transportation are often buried to avoid damage from fishing activities and to provide thermal insulation. Thermal expansion and contraction of the pipeline during operation can lead to lateral or upheaval buckling. A safe buried pipeline design must take into account a reliable evaluation of soil UPLIFT RESISTANCE and pipe EMBEDMENT DEPTH. While the cost of burying a pipeline for tens or hundreds of kilometer is significant, it is important to optimize the required soil cover depth. In this paper a parametric study of pipeline upheaval buckling in clayey backfill has been conducted using finite element analysis. Three different EMBEDMENT DEPTHs are considered. UPLIFT RESISTANCE is calculated and failure mechanism is obtained. To simulate the large penetration of the pipe into clayey backfill a novel Arbitrary Lagrangian Eulerian (ALE) finite element technique was employed in this paper. The results reveal that as EMBEDMENT DEPTH increases, UPLIFT RESISTANCE increases and also UPLIFT MECHANISM changes. However, UPLIFT RESISTANCE differ less than 5% for deep embedment case. In addition, the amount of pore pressure is investigated beneath the pipe for deep embedment cases and it reveals that negative excess pore pressure occurs under the pipeline.

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References

EULERIAN FINITE-ELEMENT TECHNIQUE FOR ANALYSIS OF JACK-UP SPUDCAN PENETRATION

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APA: Copy

KOOCHEKALI, A., GATMIRI, B., & KOOCHEKALI, A.. (2013). PIPELINE UPHEAVAL BUCKLING IN CLAYEY BACKFILL USING NUMERICAL ANALYSIS. INTERNATIONAL JOURNAL OF MARINE SCIENCE AND ENGINEERING, 3(2), 43-50. SID. https://sid.ir/paper/328952/en

Vancouver: Copy

KOOCHEKALI A., GATMIRI B., KOOCHEKALI A.. PIPELINE UPHEAVAL BUCKLING IN CLAYEY BACKFILL USING NUMERICAL ANALYSIS. INTERNATIONAL JOURNAL OF MARINE SCIENCE AND ENGINEERING[Internet]. 2013;3(2):43-50. Available from: https://sid.ir/paper/328952/en

IEEE: Copy

A. KOOCHEKALI, B. GATMIRI, and A. KOOCHEKALI, “PIPELINE UPHEAVAL BUCKLING IN CLAYEY BACKFILL USING NUMERICAL ANALYSIS,” INTERNATIONAL JOURNAL OF MARINE SCIENCE AND ENGINEERING, vol. 3, no. 2, pp. 43–50, 2013, [Online]. Available: https://sid.ir/paper/328952/en

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