埋地管道自然锚固规律研究
Study on Natural Anchorage Rule of Buried Pipeline
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- 引用格式:
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陈俊文,徐境,邱星栋,任启瑞,缪晖,杨帆.埋地管道自然锚固规律研究[J].天然气与石油,2015,33(3):0.doi:
Chen Junwen, Xu Jing, Qiu Xingdong, Ren Qirui, Miao Hui, Yang Fan.Study on Natural Anchorage Rule of Buried Pipeline[J].Natural Gas and Oil,2015,33(3):0.doi:
- DOI:
- 作者:
- 陈俊文1徐境2邱星栋3任启瑞1缪晖1杨帆1
Chen Junwen, Xu Jing, Qiu Xingdong, Ren Qirui, Miao Hui, Yang Fan
- 作者单位:
- 1.中国石油集团工程设计有限责任公司西南分公司，2.中国石油西南油气田公司，3.西南石油大学石油与天然气工程学院
1.China Petroleum Engineering Co., Ltd. Southwest Company 2.PetroChina Southwest Oil and Gas f ield Company; 3.College of Oil and Gas Engineering, Southwest Petroleum University
- 关键词:
- 埋地管道；应力分析；自然锚固；CAESARⅡ软件；模拟
Buried pipeline; Stress analysis; Natural anchorage: Simulation
- 摘要:
- 目前，天然气长输管道建设发展迅速，其安全性能被列为工程第一要素。埋地管道的安全评价与力学分析为管道设计与运营提供了重要的参考。管道与土壤相互作用，部分管段存在自然锚固现象，其分布规律值得研究。基于土壤位移—应力变化特性，分析了土壤对埋地管道的约束方式；结合土壤摩擦特性，推导了埋地管道自然锚固段分布规律；借助CAESARⅡ软件，模拟了特定工况的自然锚固分布，并与公式计算结果进行了对比分析。其研究成果为设计人员分析埋地管段锚固规律、掌握分布计算方法提供了借鉴。
At present, pipeline safety performance has been considered thought to be the most important issue for long-distance gas pipeline along with rapid development of gas pipeline construction. Safety assessment and mechanical analysis of buried pipeline can provide very important reference for pipeline design and normal operation. Interaction between pipeline and soil may cause natural anchorage in some segments of a pipeline and it is necessary to conduct analysis and study on distribution characteristics of such natural anchorage. Analyzed is the restraint way of soil to buried pipeline based on soil displacement and stress variation characteristics. Natural anchorage distribution characteristics of buried pipeline are derived according to soil friction characteristics. Applied is the stress software CAESAR to simulate natural anchorage distribution in a given working condition and analyzed and compared are the simulation results with those obtained from formula calculation. The study results can provide valuable reference for personnel engaged in pipeline design in analysis on natural anchorage distribution characteristics of buried pipeline and selection of distribution calculation method.
