摘要
随着水深的增加,深水海底管道由于外压导致压溃、屈曲及屈曲传播的可能性大大增加。深水海管设计中,通常采用止屈器来控制海管由于较大的外压可能造成的压溃及屈曲传播。止屈器的主要作用是:在管道受外压的条件下,一旦发生压溃屈曲并发生屈曲传播时,将屈曲传播的破坏限制在一定管道长度范围内。该文进行了深水海底管道止屈器设计研究,并基于有限元模型进行了管道的屈曲和屈曲传播分析。
Deepwater pipelines collapse and collapse propagation may occur under large extemal pressure. As collapse propagation pressure is much lower than collapse pressure, the collapse, once it occurs, may propagate through large distances along the pipeline. To avoid the occurrence of this propagation, collapse arrestors are normally welded to pipelines and, if the cross-over pressure is higher than the extemal pressure, collapse propagation can be prevented. Finite element models are used to simulate the collapse, collapse propagation, cross over pressure, and to verify the restraint efficiency of designed bulkle arrestor.
出处
《中国造船》
EI
CSCD
北大核心
2011年第A01期123-131,共9页
Shipbuilding of China
关键词
压溃
跨越屈曲传播
深水海管
止屈器
有限元分析
collapse
cross over pressure
deepwater pipelines
buckle arrestors
finite element method
