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首页> 外文会议>International Shipbuilding Conference(ISC'2002) Section C; 20021008-20021010; St.Petersburg; RU >INVESTIGATION OF INFLUENCE OF TECHNOLOGICAL PARAMETERS ON THE PIPELINE BUCKLING ON THE EXAMPLE OF GAS PIPELINE 'BLUE STREAM' THEORY, CALCULATION, EXPERIMENT
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INVESTIGATION OF INFLUENCE OF TECHNOLOGICAL PARAMETERS ON THE PIPELINE BUCKLING ON THE EXAMPLE OF GAS PIPELINE 'BLUE STREAM' THEORY, CALCULATION, EXPERIMENT

机译：以天然气管道“蓝色流”理论，计算，实验为例，研究技术参数对管道屈曲的影响

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摘要

The article contains the statement and solution of the problem of pipe buckling under external pressure and bending taking into account deviations of circular cross section, non-elastic deformation and actual "stress-strain" diagram. It is shown that during deep water pipelaying there is an additional reserve of bending capacity. The situation of only external pressure is investigated more carefully. It is demonstrated that modification of "stress-strain" diagram due to Baushinger phenomena after cold expansion significantly and negatively influences on pipe buckling capacity. Calculation results are in good compliance with unique full-scale experiment performed for "Blue Stream " project. The article contains the comparison of calculations for different diagrams as per formulas recommended by DNV Rules for submarine pipelines and INTEC Engineering. Calculations based on actual compression diagram after cold expansion are in good compliance with INTEC method for low actual ovality DNV Rules application for calculations of expanded pipes gives systemic non-conservative error. Deviations are explained not by yield strength value but by actual diagram type. The article includes a list of investigations necessary for update of deep water pipeline stability in case of new materials usage and anisotropy.
机译：考虑到圆形横截面的偏差，非弹性变形和实际的“应力-应变”图，该文章包含了在外压和弯曲下管道弯曲问题的陈述和解决方案。结果表明，在深水管道铺设过程中，还有额外的弯曲能力储备。仅对外部压力的情况进行更仔细的研究。结果表明，在冷膨胀后由于鲍兴格现象引起的“应力-应变”图的修改对管的屈曲能力有显着的负面影响。计算结果与针对“ Blue Stream”项目进行的独特的全面实验完全吻合。本文根据DNV规则为海底管道和INTEC工程推荐的公式，对不同图表的计算进行了比较。冷膨胀后基于实际压缩图的计算与低实际椭圆度DNV的INTEC方法非常吻合。膨胀管计算中的规则应用给出了系统非保守误差。不通过屈服强度值解释偏差，而是通过实际图表类型解释偏差。本文包括在使用新材料和各向异性的情况下更新深水管道稳定性所必需的研究清单。

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