不同径厚比的海底管道压溃屈曲研究  

Study on Collapse Buckling of Diverse Diameter-Thickness Ratio Subsea Pipeline

作　　者：冯浩 马超 王有发 刘天 FENG Hao;MA Chao;WANG Youfa;LIU Tian(China Petroleum Pipeline Engineering Corporation,Langfang 065099,China;Offshore Engineering Key Laboratory of China National Petroleum Corporation,Langfang 065099,China;Construction Project Management Branch,Pipe China,Langfang 065001,China)

机构地区：[1]中国石油天然气管道工程有限公司,河北廊坊065099 [2]中国石油集团海洋工程重点实验室,河北廊坊065099 [3]国家管网建设项目管理分公司,河北廊坊065001

出　　处：《海洋技术学报》2023年第4期76-82,共7页Journal of Ocean Technology

基　　金：中国石油天然气集团有限公司科学研究与技术开发项目(2019B-3010)。

摘　　要：为了探索不同径厚比海底管道的压溃屈曲特性,本文分别采用挪威船级社(Det Norske Veritas,DNV)规范、有限元模拟和深海压力舱模型试验,研究不同径厚比海底管道承载外部水压的能力,并就DNV规范压溃屈曲计算公式对不同径厚比管道的适用性进行了讨论,优化了小径厚比海底管道压溃屈曲的设计方法。研究表明:小径厚比管道的压溃屈曲临界压力对管道径厚比的变化更敏感;DNV规范计算小径厚比管道的压溃屈曲临界压力偏小,在进行深海管道的压溃屈曲设计时,建议采用模型试验结合有限元模拟的方法,计算管道实际可提供的压溃屈曲承载力。In order to study the collapse buckling characteristics of diverse diameter-thickness ratio subsea pipelines,DNV code,finite element simulation and large-scale pressure chamber model test were used to calculate the external pressure bearing capacity of subsea pipelines with different diameter-thickness ratios.The applicability of DNV collapse buckling calculation method to diverse diameterthickness ratio pipelines was discussed.And the collapse buckling design method of low diameter-thickness ratio subsea pipeline was optimized.The results show that the critical collapse buckling pressure of low diameter-thickness ratio pipeline is more sensitive to the change of diameter-thickness ratio.The critical collapse buckling pressure of low diameter-thickness ratio pipeline calculated by DNV is too small.When carrying out the collapse buckling design of deep-water pipeline,it is recommended to do model test combined with finite element simulation to calculate the collapse buckling bearing capacity.

关 键 词：深水管道 压溃屈曲 径厚比 有限元模拟 模型试验 

分 类 号：TE83[石油与天然气工程—油气储运工程]