深水海底管道止屈器设计研究

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.

Design and Validation of Buckle Arrestors for Deepwater Pipelines

Deepwater pipelines collapse and collapse propagation may occur under large external 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 external pressure,collapse propagation can be prevented.Finite element models are used to simulate the collapse,colla...