首页> 外文会议>Proceedings of the ASME India oil and gas pipeline conference 2015 >ANALYZING EFFECTS OF SOIL PARAMETERS ON BURIED PIPE BEHAVIOR AND DECIDING GOVERNING PARAMETER USING STATISTICAL APPROACH
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ANALYZING EFFECTS OF SOIL PARAMETERS ON BURIED PIPE BEHAVIOR AND DECIDING GOVERNING PARAMETER USING STATISTICAL APPROACH

机译:用统计方法分析土壤参数对埋管性能的影响并确定治理参数

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One of the most common and practical difficulties a pipeline engineer faces at the initial stage of the project is the lack of Soil survey data. Hence, various soil parameters like soil type, density, friction angle, cohesive pressure, depth of cover, pipe coating etc. are needed to be assumed. The critical designs like anchor block requirement, pipe route changes, support loads which involve a huge cost are required to be 'Issued for Construction' based on assumed data. This paper briefly illustrates and compares the results obtained from the two most common buried pipe stress analysis methods viz. 'American Lifeline Alliance- Appendix B'(1)and 'Stress Analysis Methods for Underground Pipelines' (2) and shows their effects graphically on the various Stress Analysis results like pipe movement, end force, active length (virtual anchor length) and bending stress generated in the buried pipeline. Further, this paper comes up with an unique application of ANOVA, a Statistical method, to find out the most significant soil parameter affecting the said results. The paper explains this method with a solved example. These results are useful for a pipeline engineer to determine the governing soil parameter in the design and thus provide a useful tool to make optimum assumptions in absence of soil data so as to minimize the changes in future design and helps saving the cost of the project due to rework.
机译:管道工程师在项目初期面临的最普遍和实际的困难之一是缺乏土壤调查数据。因此,需要假设各种土壤参数,例如土壤类型,密度,摩擦角,内聚压力,覆盖深度,管道覆盖层等。必须根据假定的数据“发布用于施工”的关键设计,例如锚块要求,管道路线变更,涉及巨大成本的支撑载荷。本文简要说明并比较了从两种最常见的地下管道应力分析方法(即viz)获得的结果。 “美国生命线联盟-附录B”(1)和“地下管道的应力分析方法”(2),并以图形方式显示了它们对各种应力分析结果的影响,例如管道运动,端力,有效长度(虚拟锚定长度)和弯曲在地下管道中产生的应力。此外,本文提出了统计方法ANOVA的独特应用,以找出影响上述结果的最重要的土壤参数。本文通过一个已解决的示例说明了该方法。这些结果对于管道工程师确定设计中的支配土壤参数很有用,从而为在没有土壤数据的情况下进行最佳假设提供了有用的工具,从而最大程度地减少了未来设计的变化并有助于节省项目成本。返工。

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