Ovalization of steel energy pipelines buried in saturated sands during ground deformations |
| |
| Institution: | 1. Department of Civil and Environmental Engineering, Western University, London, ON N6A 5B9, Canada;2. Natural Resources Canada, 490, Rue de la Couronne, Québec, QC G1K 9A9, Canada;1. Graduate School of Mechanical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, South Korea;2. Department of Mechanical Engineering, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon, South Korea;3. Department of Mechanical Engineering, Suwon Science College, 288, Seja-ro, Jeongnam-myeon, Hwaseong-si, Gyeonggi-do, South Korea;4. Research Development Institute, Korea Gas Corporation, 638-1, Il-dong, Sangrok-gu, Ansan-si, Gyeonggi-do, South Korea;1. Sch. of Civil & Envr. Engr., Cornell University, Ithaca, NY, USA;2. Civil & Envr. Engr., Youngstown State Univ., Youngstown, OH, USA;1. National Engineering Laboratory for Pipeline Safety, Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102246, China;2. PowerChina Beijing Engineering Corporation Limited, Beijing 100024, China;3. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China |
| |
| Abstract: | Cross-sectional ovalization of buried steel pipes subjected to bending moment induced by end displacements is discussed. A three dimensional finite element analysis was conducted employing Abaqus/CAE. The pipe was simulated using 3D shell elements while the saturated sand soil medium was simulated by employing discrete nonlinear springs along the pipeline. The effects of normalized burial depth (H/D), diameter to wall thickness ratio (D/t), sand density and level of the internal pressure on the ovalization are investigated, and resulting ovalization distribution with respect to bending moment at critical sections is presented. The results of this study enable simple one dimensional finite element models to consider geometrical cross-sectional nonlinearities in the analysis of buried pipelines. |
| |
| Keywords: | Buried steel pipeline Saturated sand Ovalization Finite element analysis |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
