水网地区漂浮输气管道应力分析
Analysis on Stress of Floating Gas Pipeline in River-network Area
浏览(1573) 下载(9)
- 引用格式:
-
付冉,姚安林.水网地区漂浮输气管道应力分析[J].天然气与石油,2015,33(4):0.doi:
Fu Ran, Yao Anlin.Analysis on Stress of Floating Gas Pipeline in River-network Area[J].Natural Gas and Oil,2015,33(4):0.doi:
- DOI:
- 作者:
- 付 冉1 姚安林1,2
Fu Ran, Yao Anlin
- 作者单位:
- 1.西南石油大学石油与天然气工程学院,2.油气消防四川省重点实验室
1.School of Petroleum & Natural Gas Engineering, Southwest Petroleum University;2.Oil and Gas Fire Protection Key Laboratory of Sichuan Province
- 关键词:
- 输气管道；漂浮；应力分析；CAESARⅡ
Gas pipeline; Floating; Stress analysis; CAESAR II
- 摘要:
- 水网地区输气管道在汛期会产生不与河床接触的局部漂浮管段,管道在动水作用力、浮力、重力及岸边土体抗力的共同作用下发生空间弯曲变形。为得出管道在局部漂浮时的应力分布情况,建立水流作用下漂浮管道的力学模型,采用CAESARⅡ有限元软件对管道进行数值模拟。结合管线工程实例进行分析,得到管道应力分布和变形情况及危险点的位置。漂浮管道的力学行为受诸多因素影响,分析管道最大当量应力随影响因素的变化规律,对水网地区输气管道的日常维护和制定抢险方案具有重要的参考意义。
In flood season, the formation of local floating pipeline occurs in river-network areas because gas pipeline is out of touch with riverbed. Under the combined effects of dynamic water, buoyancy, gravity and resistance of bank soil, pipeline generally presents three-dimensional bending. Applied is the infinite software CAESAR II to conduct numerical simulation of pipeline in order to obtain the stress distribution of local floating pipeline and establish mechanical model of pipeline under the action of water flowing. Taken are practical engineering examples of pipeline for specific analysis and obtained are stress distribution and deformation of pipeline and locations of dangerous points. Mechanical behavior of floating pipeline is influenced by many factors and analysis on change law of max pipeline equivalent stress has very important reference meaning for daily maintenance of gas pipelines in river-network area and making emergency plans.
