| 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 |
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| DOI： |
| 中文关键词: 深水管道 压溃屈曲 径厚比 有限元模拟 模型试验 |
| 英文关键词:deep water pipeline collapse buckling diameter-thickness ratio finite element simulation model test |
| 基金项目: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） |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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 big diameter-thickness ratio subsea pipeline was optimized. The results show that the critical collapse buckling pressure of big diameter-thickness ratio pipeline is more sensitive to the change of diameter-thickness ratio. The critical collapse buckling pressure of big 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. |
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