Limit state equation and failure pressure prediction model of pipeline with complex loading.

Autor: Sun MM; School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China.; National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou, 450001, China.; Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety, Zhengzhou, 450001, China., Fang HY; School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China. fanghongyuan1982@163.com.; National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou, 450001, China. fanghongyuan1982@163.com.; Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety, Zhengzhou, 450001, China. fanghongyuan1982@163.com., Wang NN; School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China.; National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou, 450001, China.; Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety, Zhengzhou, 450001, China., Du XM; School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China.; National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou, 450001, China.; Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety, Zhengzhou, 450001, China., Zhao HS; State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China.; School of Hydraulic Engineering, Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, 116024, China., Zhai KJ; School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, 450001, China.; National Local Joint Engineering Laboratory of Major Infrastructure Testing and Rehabilitation Technology, Zhengzhou, 450001, China.; Collaborative Innovation Center of Water Conservancy and Transportation Infrastructure Safety, Zhengzhou, 450001, China.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 May 25; Vol. 15 (1), pp. 4473. Date of Electronic Publication: 2024 May 25.
DOI: 10.1038/s41467-024-48688-1
Abstrakt: Assessing failure pressure is critical in determining pipeline integrity. Current research primarily concerns the buckling performance of pressurized pipelines subjected to a bending load or axial compression force, with some also looking at the failure pressure of corroded pipelines. However, there is currently a lack of limit state models for pressurized pipelines with bending moments and axial forces. In this study, based on the unified yield criterion, we propose a limit state equation for steel pipes under various loads. The most common operating loads on buried pipelines are bending moment, internal pressure, and axial force. The proposed limit state equation for intact pipelines is based on a three-dimensional pipeline stress model with complex load coupling. Using failure data, we investigate the applicability of various yield criteria in assessing the failure pressure of pipelines with complex loads. We show that the evaluation model can be effectively used as a theoretical solution for assessing the failure pressure in such circumstances and for selecting appropriate yield criteria based on load condition differences.
(© 2024. The Author(s).)
Databáze: MEDLINE
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