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.
作者
黄思
张聪
徐征南
牛琦锋
林冠堂
陈英红
Huang Si;Zhang Cong;Xu Zhengnan;Niu Qifeng;Lin Guantang;ChenYinghong(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510641,China;Guangdong Institute of Special Equipment Inspection and Research Zhuhai Branch,Zhuhai 519002,China)
出处
《压力容器》
北大核心
2019年第6期34-40,共7页
Pressure Vessel Technology
基金
国家自然科学基金资助项目(21878102)
广东省质监局科技项目(2018CT23)
关键词
架空管道
不均匀沉降
有限元分析
overhead pipeline
uneven settlement
finite elementanalysis
