Lateral buckling of subsea pipelines triggered by combined sleeper and distributed buoyancy section |
| |
| Institution: | 1. Ocean College, Zhejiang University, Zhoushan, 316021, Zhejiang, China;2. Ocean Academy, Zhejiang University, Zhoushan, 316021, Zhejiang, China;1. Shanghai Engineering Research Center of Marine Renewable Energy, College of Engineering Science and Technology, Shanghai Ocean University, Shanghai, China;2. University of Stavanger, Norway;1. National Engineering Research Center for Port Hydraulic Construction Technology, Tianjin Research Institute for Water Transport Engineering, M.O.T, Tianjin, 300456, China;2. State Key Laboratory of Ocean Engineering, Shanghai JiaoTong University, Shanghai, 200240, China;3. Key Laboratory for Damage Diagnosis of Engineering Structures of Hunan Province, College of Civil Engineering, Hunan University, Changsha, 410082, China;4. College of Civil Engineering and Architecture, Hainan University, Haikou, 570208, China;1. School of Naval Architecture and Ocean Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China;2. gMarine, Houston, TX, USA;3. China Ship Scientific Research Center (CSSRC), Wuxi, 214082, China |
| |
| Abstract: | In order to release the axial compressive force resulting from high-temperature conditions, sleepers or distributed buoyancy sections are usually installed along the route of the subsea pipeline as the buckle initiation facilities to trigger lateral buckles. DNV-RP-F110 suggests that the individual buckle initiators can be combined to further increase the reliability of buckle formation. In this study, an improved buckle initiation technique, called the combined sleeper and distributed buoyancy section, is investigated. A generalised mathematical model is proposed to simulate lateral buckling triggered by the combined sleeper and distributed buoyancy section, and it can also be applied to simulate lateral buckling triggered by an individual technique, such as triggered only by sleeper or only by distributed buoyancy section. The mathematical model is verified by comparing with the solutions in the literature. The parametric analysis shows that the buckle formation reliability can be improved when the combined sleeper and distributed buoyancy section is employed. Moreover, both the axial force and the maximum stress along the buckled pipeline in the post-buckling stage are at a lower level, so the pipeline will be safer when the combined sleeper and distributed buoyancy section is utilised as the triggers. |
| |
| Keywords: | Combined sleeper and distributed buoyancy section Buckle initiation method Analytical solution |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
