Study on Security of Long-distance Transport X52 Pipeline in Suspended State
-
摘要: 以轮库输油复线某段X52原油管道为工程背景,管道意外悬空后,将管线悬空段简化为大挠度梁,且考虑管梁的几何非线性,将埋地段看成有限长梁,考虑了土壤纵向抗力的物理非线性,利用Winkler弹性地基理论、管-土互作用双线性模型等力学理论建立悬空管道系统的大变形分析模型。通过X52管线钢拉伸试验、管道悬空模拟试验研究及有限元仿真建模,验证了有限元仿真方法的可靠性,分析计算了X52管道基于应力失效准则的安全悬空长度和基于应变失效准则的极限悬空长度,通过极值应力、应变随不同悬空长度的变化规律研究,解释了取应变作为管道失效判据的合理性。Abstract: Taking a segment of Lunnan-korla double line of crude oil X52 pipeline as the engineering background, considering that the pipeline is suspended accidentally and the pipeline segment is simplified as a deflected beam, we establish the large deformation analysis model of suspended pipeline system with the theory of Winkler elastic foundation and the tube-soil interaction bilinear model. In the analysis model, the geometric nonlinearity and the physical nonlinear longitudinal resistance of soil are considered and the buried area is treated as limited long beam. Through X52 pipe tensile test, the experiments for suspended pipeline and finite element simulation, the reliability of the finite element simulation method have been tested and verified. The security suspended length is calculated based on X52 pipe stress failure criterion and the maximum suspended length is also obtained based on failure criterion strain. The rationality of taken strain as the pipeline failure criterion is explained with studying the extreme stress and strain changing with the different suspended length.
-
Key words:
- ABAQUS /
- calculations /
- computer simulation /
- constitutive models /
- deformation
-
[1] 王沪毅.输气管线在地质灾害中的力学行为研究[D]. 西安:西北工业大学,2003:1-5 Wang H Y. Research on failures of pipeline under geological disaster[D]. Xi'an:Northwestern Polytechnic University, 2003:1-5(in Chinese) [2] 王建华,罗朔.悬空管道的安全性评估[J]. 后勤工程学院学报,2010,26(3):32-36 Wang J H, Luo S. Evaluation on the security of the suspended pipeline[J]. Journal of Logistical Engineering University, 2010,26(3):32-36(in Chinese) [3] 马廷霞,吴锦强,唐愚,等.成品油管道的极限悬空长度研究[J]. 西南石油大学学报, 2012,34(4):165-173 Ma T X, Wu J Q, Tang Y, et al. Maximum suspended length of production pipeline[J]. Journal of Southwest Petroleum University, 2012,34(4):165-173(in Chinese) [4] 邓道明,周新海,申玉平.横向滑坡过程中管道的内力和变形计算[J]. 油气储运,1998,17(7):18-22 Deng D M, Zhou X H, Shen Y P. Calulation of pipeline inner force and distortion during transverse landslide body[J]. Oil & Gas Storage and Transportation, 1998,17(7):18-22(in Chinese) [5] 童华,祝效华,练章华,等.坍塌和冲沟作用下埋地管道大变形分析[J]. 石油机械,2007,35(11):29-32 Tong H, Zhu X H, Lian Z H, et al. Large deformation analysis of buried pipelines under the condition of collapse and gulch[J]. China Petroleum Machinery, 2007,35(11):29-32(in Chinese) [6] 王维,梁政.关于悬垂管道计算模型的研究[J]. 天然气工业,1997,17(5):63-66 Wang W, Liang Z. A study on the calculation model of catenary pipe[J]. Natural Gas Industry, 1997,17(5):63-66(in Chinese) [7] 王峰会,赵新伟,王沪毅.高压管道黄土塌陷情况下的力学分析与计算[J]. 油气储运,2004,23(4):6-8 Wang F H, Zhao X W, Wang H Y. Failure of high pressure pipeline under collapse of loess[J]. Oil & Gas Storage and Transportation, 2004,23(4):6-8(in Chinese) [8] 童华.长输管线大变形设计理论研究[D]. 成都:西南石油学院,2005:39-45 Tong H. Research on the theory of large deformation design of long distance pipeline[D]. Chengdu:Southwest Petroleum University, 2005:39-45(in Chinese) [9] 帅健.管线力学[M]. 北京:科学出版社,2010 Shuai J. Mechanics of pipeline[M]. Beijing:Science Press, 2010(in Chinese) [10] 刘冰,刘学杰,张宏.基于应变的管道设计准则[J]. 天然气工业,2008,28(2):129-131 Liu B, Liu X J, Zhang H. Pipeline design code based on morphotropy strain[J]. Natural Gas Industry, 2008,28(2):129-131(in Chinese) [11] 高建,王德国,何仁洋,等.基于应变的悬空管道性能分析[J]. 管道技术与设备, 2011,(6):13-15 Gao J, Wang D G, He R Y, et al. Performance analysis of the suspended pipeline based on strain[J]. Pipeline Technique and Equipment, 2011,(6):13-15(in Chinese) [12] DNV. Offshore Standard OS-F101. Submarine pipeline systems[S]. 2000 [13] Canadian Standards Association Oil and gas pipeline systems[S]. Canada, 2003 [14] The American Society of Civil Engineers. Guidelines for the design of buried steel Pipe(with addenda through February 2005)[S]. USA, 2005 [15] 赵林,冯启民.埋地管线有限元建模方法研究[J]. 地震工程与工程振动,2001,21(2):53-57 Zhao L, Feng Q M. Research on methods for establishing FEM model of buried pipelines[J]. Earthquake Engineering and Engineering Vibration, 2001,21(2):53-57(in Chinese)\
点击查看大图
计量
- 文章访问数: 134
- HTML全文浏览量: 21
- PDF下载量: 9
- 被引次数: 0