【摘 要】
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Taking into account the non-linear nature of the material and load of buried pipe is rarely studied around the world.Taking design strain as reliability evaluation index and considering different prop
【机 构】
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Oil and Gas CAE Technology Research Center,China University of Petroleum,Qingdao,Shandong 266555,Chi
【出 处】
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2015年油气输送管道高强度管线钢研究与应用技术国际研习会
论文部分内容阅读
Taking into account the non-linear nature of the material and load of buried pipe is rarely studied around the world.Taking design strain as reliability evaluation index and considering different properties of the fault and pipe,reliability study of crossing-fault buried pipeline is taken using pipe-soil coupling mechanical model.The result shows: 1.The maximum axial tensile strain and compressive strain rises as the staggered distance and internal friction angle of soil grows; 2.Wall thickness,radius to thickness ratio and depth of the pipe impacts the strain and the radius to thickness ratio has the greatest parameter sensitivity; 3.The results of sensitivity analysis can be used as the state variables of the integrity assessment of pipeline.The studying conclusions can provide ideas and reference for the integrity assessment of crossing-fault buried pipeline.
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