乙烯工程大口径管道三通的补强有限元分析

Finite Element Analysis on Large-Diameter Pipe Tee Reinforcing in Ethylene Project

摘要: 对大型乙烯工程中的大型管道系统，通过有限元分析验算，证明管道三通结构位置需要进行加强处理。在实际施工已经完成的情况下，结合有限元分析，提出了大型管道三通的在线加强方法，根据施工的难易程度和人员可达程度，分别选取了内侧加补强圈、增加内衬管，以及在加强圈和内衬管的基础上，再增加角形加强圈。通过这样的加强处理后，有限元分析证明，管道三通位置能够满足材料的许用强度要求。

Abstract: For major pipeline system in large-scale ethylene project, through finite element analysis checking, we prove that pipe tee structure needs to be strengthened. Under the condition that actual construction had already been completed in the field, we proposed online enhancement method for the large-scale pipeline tee combined with finite element analysis. According to the difficulty of construction and personnel reachability, we selected the inside additional reinforcement ring, additional liner pipe, as well as the enhancement circle and liner pipe together with the angular enhancement circle again. Through the enhanced processing, finite element analysis proved that pipe tee enhancement can meet the material allowable strength requirement.