X80输气管线悬空状态下的安全评价
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摘要
X80管线在我国西部恶劣复杂的环境中运行时,各类地质灾害经常造成管道悬空现象,严重影响管道的安全运营。在万能材料试验机上对X80管线进行拉伸试验,得其本构关系,为仿真计算提供依据。借助弹性地基理论、Winkler假定对悬空管道力学模型进行分析,应用基于应变准则的失效判据来判断管道的安全状态,并用有限元软件ABAQUS对X80悬空输气管道的安全状态进行模拟与分析。结果表明:最大应力、应变及挠度与悬空长度、管径比(D/t)呈正相关;悬空管道的危险点,位于埋设段与悬空段交汇处。这些结论为悬空管道的安全评估提供了一定的理论基础。
X80 pipeline operate in the western region of China where the environment conditions are extremely complicated. All kinds of geological disasters along the pipeline will result in pipeline dangling phenomenon. This phenomenon will seriously affect the safety of pipelines operation. The constitutive relationship of the X80 pipeline which getting from the tensile test operated in the universal material testing machine can provide the basis for the simulation calculation. The elastic foundation theory and Winkler assumption is used to analyze the mechanical model of suspended pipelines. The strain failure criterion is used to estimate the safety state of pipes. The finite element program ABAQUS is used to simulate and analyze the safety state of the X80 gas transmission pipes. The results indicate that the maximum stress,strain,deflection are in proportional to suspended length and diameterthickness ratio of pipeline( D / t). The most dangerous point of the pipe locates in the buried section and hanging section interchanged. These conclusions can provide theoretical basis for the safety assessment of suspended pipelines.
X80 pipeline operate in the western region of China where the environment conditions are extremely complicated. All kinds of geological disasters along the pipeline will result in pipeline dangling phenomenon. This phenomenon will seriously affect the safety of pipelines operation. The constitutive relationship of the X80 pipeline which getting from the tensile test operated in the universal material testing machine can provide the basis for the simulation calculation. The elastic foundation theory and Winkler assumption is used to analyze the mechanical model of suspended pipelines. The strain failure criterion is used to estimate the safety state of pipes. The finite element program ABAQUS is used to simulate and analyze the safety state of the X80 gas transmission pipes. The results indicate that the maximum stress,strain,deflection are in proportional to suspended length and diameterthickness ratio of pipeline( D / t). The most dangerous point of the pipe locates in the buried section and hanging section interchanged. These conclusions can provide theoretical basis for the safety assessment of suspended pipelines.
引文
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9 龚爱民,傅蜀燕,黄海燕.ANSYS软件在分析地下埋管工程中的应用.安徽建筑工业学院学报(自然科学版),2004;12(5):51 —55Gong A M,Fu S Y,Huang H Y.The application of ANSYS in filled conduit analysis.Journal of Anhui Institute of Architecture&Industry(Nature Science Edition),2004;12(5):51—55
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11 Tian Y H,Mark J C,Christophe G.Advancing pipe-soil interaction models in calcareous sand.Applied Ocean Research,2010;32(3):284—297
12 Han Bing,Wang Zhiyin,Zhao Honglin,et al.Strain-based design for buried pipelines subjected to landslides.Petroleum Science,2012;9(2):236—241
13 Shantanu J,Amit P,Arghya D,et al.Analysis of buried pipelines subjected to reverse fault motion.Soil Dynamics and Earthquake Engineering,2011;31(7):930—940
14 潘家华.高强度管线钢发展中的几个重要课题.焊管,2005;28(4):1—2Pan J H.Several concernment task under development of high strength pipeline steel.Welded Pipe and Tube,2005;28(4):1—2
15 帅健.管线力学.北京:科学出版社,2010:5—7Shuai J.Pipeline mechanics.Beijing:Science Press,2010:5—7
16 赵林,冯启民.埋地管线有限元建模方法研究.地震工程与工程振动,2001;21(2):53—57Zhao L,Feng Q M.Research on methods for establishing FEM model of buried pipelines.Earthquake Engineering and Engineering Vibration,2001;21(2):53—57
2 孙巧.X80管线钢用于国内输气管道工程.产品视点,2013;32(6):130Kong Q.X80 pipeline steel used for domestic gas pipeline projects.Product Point of View,2013;32(6):130
3 Gennaro G M.Pipelines exposed to coal mine subsidence face risk of serious damage.Pipeline and Gas Journal,2000;227(11):37—40
4 Liu P E,Zheng J Y,Zhang B J,et al.Failure analysis of natural gas buried X65 steel pipeline under deflection load using finite element method.Materials and Design,2009;31(3):1384—1391
5 张乐天,刘杨,魏立新,等.洪水冲击管道的模拟分析.管道技术与设备,2006;(2):11—17Zhang L T,Lui Y,Wei L X,et al.Simulation and analysis of impacted pipe.Pipeline Technique and Equipment 2006;(2):11—17
6 Scheiner S,Pichler B,Hellmich C,et al.Loading of soil-covered oil and gas pipelines due to adverse soil settlements-protection against thermal dilatation-induced wear,involving geosynthetics.Computers and Geotechnics,2006;33(8):371—380
7 马廷霞,吴锦强,唐愚,等.成品油管道的极限悬空长度研究.西南石油大学学报(自然科学版),2012;34(4):165—173Ma T X,Wu J Q,Tang Y,et al.Maximum suspended length of production pipeline.Journal of Southwest Petroleum University(Science&Technology Edition),2012;34(4):165—173
8 邓道明,周海新,申玉平.横向滑坡过程中管道的内力和变形计算.油气储运,1998;17(7):18—22Deng D M,Zhou H X,Shen Y P.Calulation of pipeline Inner force and distortion during transverse landslide body.Oil&Gas Storage and Transportation,1998;17(7):18—22
9 龚爱民,傅蜀燕,黄海燕.ANSYS软件在分析地下埋管工程中的应用.安徽建筑工业学院学报(自然科学版),2004;12(5):51 —55Gong A M,Fu S Y,Huang H Y.The application of ANSYS in filled conduit analysis.Journal of Anhui Institute of Architecture&Industry(Nature Science Edition),2004;12(5):51—55
10 张坤勇,王宇,艾英钵.任意载荷下管土相互作用解答.岩土工程学报,2012;32(8):1189—1193Zhang K Y,Wang Y,Ai Y B.Analytical solution to interaction between pipelines and soils under arbitrary loads.Chinese Journal of Geotechnical Engineering,2012;32(8):1189—1193
11 Tian Y H,Mark J C,Christophe G.Advancing pipe-soil interaction models in calcareous sand.Applied Ocean Research,2010;32(3):284—297
12 Han Bing,Wang Zhiyin,Zhao Honglin,et al.Strain-based design for buried pipelines subjected to landslides.Petroleum Science,2012;9(2):236—241
13 Shantanu J,Amit P,Arghya D,et al.Analysis of buried pipelines subjected to reverse fault motion.Soil Dynamics and Earthquake Engineering,2011;31(7):930—940
14 潘家华.高强度管线钢发展中的几个重要课题.焊管,2005;28(4):1—2Pan J H.Several concernment task under development of high strength pipeline steel.Welded Pipe and Tube,2005;28(4):1—2
15 帅健.管线力学.北京:科学出版社,2010:5—7Shuai J.Pipeline mechanics.Beijing:Science Press,2010:5—7
16 赵林,冯启民.埋地管线有限元建模方法研究.地震工程与工程振动,2001;21(2):53—57Zhao L,Feng Q M.Research on methods for establishing FEM model of buried pipelines.Earthquake Engineering and Engineering Vibration,2001;21(2):53—57
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