考虑波-管-土耦合作用的海底管道在位稳定性分析方法  

A wave-pipeline-soil coupling analysis method for untrenched pipeline stability

作　　者：高福平[1] 顾小芸[1] 吴应湘[1] 

机构地区：[1]中国科学院力学研究所,北京100080

出　　处：《海洋工程》2005年第1期6-12,共7页The Ocean Engineering

基　　金：国家自然科学基金资助项目(1977205);中国科学院"十五"知识创新工程资助项目(KJCX2-SW-L03)

摘　　要：以水动力加载试验得到的描述管道在位稳定性的波浪环境参数、管道参数和海床土性参数之间的无量纲耦合关系为基础,提出了一种考虑波-管-土动力耦合作用的海底管道在位稳定性分析方法,并通过算例与挪威船级社推荐的DnV设计规范进行了比较分析。分析表明,考虑波-管-土耦合作用的管道稳定性分析方法与DnV管道设计规范有很好的可比性,而且物理机理更清晰,可为管道稳定性设计提供有益的参考。Wave induced submarine pipeline on-bottom stability is a wave-pipeline-soil coupling problem. The DnV pipeline stability design standard is based on the pipe-soil interaction model, which was drawn from mechanical actuator loading experiments. Different from the method in the DnV design standard, a wave-pipe-soil coupling analysis method for untrenched pipeline stability is proposed in this paper. In the new analysis method, the non-dimensional wave-pipe-soil interaction relationships drawn from hydraulic loading experiments are accepted, which reflect the coupling effects of wave loading, soil and pipelines. A comparison between the wave-pipeline-soil coupling analysis method and DnV design method indicates that the proposed method being more explicit in physical mechanism aspect is comparable with the DnV design method and will provide a guide for engineering practice.

关 键 词：海底管道 在位稳定性 波管土耦合作用 设计方法 

分 类 号：TV139.2[水利工程—水力学及河流动力学]