不均匀沉降架空管道桁架桥的有限元计算分析
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摘要
以某化工园区的基础不均匀沉降地段的架空管道桁架桥作为研究对象,该管道系统有10组立柱,4层管架及27根管道,输送不同温度和压力工况的流动介质。采用自动安平水准仪测量架空管道立柱的沉降值,在此基础上,考虑重力、介质温度、流动载荷等因素,系统完整地建立了ANSYS有限元模型并进行数值计算,得到了不均匀沉降架空管道桁架桥的位移、应力等参数分布;对二次应力进行了校核验算,以判断不均匀沉降地段的架空管道桁架桥的可靠性,并估算出各个立柱的临界沉降值。旨在探索一套针对不均匀沉降架空管道桁架桥实际应用的安全风险评估方法,为架空管道桁架桥的安全运行提供坚实的技术支持。
An overhead pipeline truss bridge located in a chemical industrial park with uneven settlements due to movements of ground base was used as the study object. This pipeline system consists of 10 sets of columns,4 layers of pipe racks and 27 pipelines,which transports flowing media under different temperature and pressure conditions. A complicated ANSYS finite element model was built to perform the numerical analysis to thermal fluid-solid coupling based on the measurements of the settlements of the overhead pipeline columns using automatic levels,and considering the factors of gravity,medium temperature,and flow load,etc.,the distributions of parameters such as displacement and stress of the bridge were obtained. The secondary stresses were checked and verified in order to judge the reliability of the overhead pipeline truss bridge with uneven settlements and the critical settlement value of each column was estimated. The purpose was to explore a practical method for the safety assessment of the overhead pipeline truss bridge with uneven settlements,and to provide a solid technological foundation for the safe operation of the bridge.
An overhead pipeline truss bridge located in a chemical industrial park with uneven settlements due to movements of ground base was used as the study object. This pipeline system consists of 10 sets of columns,4 layers of pipe racks and 27 pipelines,which transports flowing media under different temperature and pressure conditions. A complicated ANSYS finite element model was built to perform the numerical analysis to thermal fluid-solid coupling based on the measurements of the settlements of the overhead pipeline columns using automatic levels,and considering the factors of gravity,medium temperature,and flow load,etc.,the distributions of parameters such as displacement and stress of the bridge were obtained. The secondary stresses were checked and verified in order to judge the reliability of the overhead pipeline truss bridge with uneven settlements and the critical settlement value of each column was estimated. The purpose was to explore a practical method for the safety assessment of the overhead pipeline truss bridge with uneven settlements,and to provide a solid technological foundation for the safe operation of the bridge.
引文
[1]陈天敏,张强升,贺振宇,等.管线阀门的抗外载荷试验模拟及其安全评估[J]流体机械,2018,46(8):13-16.
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[17]吴明涵,刘冬骏,孙强.高温环境下预应力钢桁架的热力耦合分析[J].钢结构,2018,33(2):110-113.
[18]李家栋,徐锦煌.应力分析在极端管口载荷调整及优化过程的作用[J].化工设备与管道,2019,56(2):65-69.
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[22]常守欣,王志栋.方形补偿器类型及应力分析验算[J].四川建材,2008,34(6):23-24.
[2]王敏,唐萍,凌张伟,等.管道支吊架管夹断裂失效数值分析[J].化工设备与管道,2019,56(2):73-77.
[3]冷建成,周国强,张国威,等.地基沉降下管道的有限元应力分析[J].石油矿场机械,2012,41(4):80-83.
[4]刘金梅,祝迪,王瑞,等.管土耦合作用下长输直埋管道沉降分析[J].油气田地面工程,2018,37(12):52-55.
[5]李杨,李怀.地基不均匀沉降作用下管线响应分析[J].中外建筑,2016(3):100-102.
[6]高红利,李伟军,李志海.多基础不均匀沉降球罐的应力分析[J].压力容器,2013,30(1):40-44.
[7]石磊,帅健,王晓霖,等.地基沉降下油罐罐壁的变形分析[J].安全与环境学报,2018,18(4):1352-1359.
[8]龚克,胡家顺,孙秉才,等.大型原油储罐地基沉降安全性分析[J].油气田环境保护,2017,27(3):28-31.
[9]李雅楠,钱才富.基于VB和ANSYS参数化建模的高压加热器应力分析和强度评定[J].压力容器,2019,36(1):48-53.
[10]谭俊,高德芳,杨超.斜齿轮精确啮合模型的APDL建模方法[J].机械传动,2017,41(5):188-192.
[11]徐鹏飞,王洪申,豆永坤.基于命令流方法实现ANSYS系统参数化建模[J].机械设计与制造工程,2017,46(4):51-53.
[12]杨福芹,王学志,万震.隧道内预埋槽道的有限元分析及结构优化研究[J].机电工程,2019,36(1):44-46.
[13]许明,陈学东,王冰,等.悬跨海底管道绕流三维特性的大涡数值模拟研究[J].流体机械,2018,46(5):18-24.
[14] Ramaneyulu K,Husain A,Sehgal D K. Finite element analysis and reliability assessment of spherical LPG storage tank[J]. Journal of the Institution of Engineers:Mechanical Engineering Division,2003,84(3):98-103.
[15] Guan C S,Wan Z. The simulation study on buried ground-source heat pipe transient temperature field distribution[J].Advanced Materials Research,2012,383-390:6621-6625.
[16]王建平,霍立兴,谷侃锋.高密度聚乙烯塑料压力管道热板焊接头应力分布有限元分析[J].压力容器,2005,22(4):13-16.
[17]吴明涵,刘冬骏,孙强.高温环境下预应力钢桁架的热力耦合分析[J].钢结构,2018,33(2):110-113.
[18]李家栋,徐锦煌.应力分析在极端管口载荷调整及优化过程的作用[J].化工设备与管道,2019,56(2):65-69.
[19]蔡增基,龙天渝.流体力学泵与风机[M].第四版.北京:中国建筑工业出版社,1999.
[20]姜丽梅,江阿兰.基于ANSYS对钢桁梁桥的静动力分析[J].低温建筑技术,2013,35(1):40-42.
[21]电力规划设计院.发电厂汽水管道应力计算技术规程:DL/T 5366—2014[S].北京:中国电力出版社,2014.
[22]常守欣,王志栋.方形补偿器类型及应力分析验算[J].四川建材,2008,34(6):23-24.
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