蛇形铺管形状对海底管道横向屈曲的影响
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- DOI:
- 作者:
- 刘羽霄, 李昕, 周晶
LIU Yu-xiao
- 作者单位:
- 大连理工大学海岸与近海工程国家重点实验室
State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023
- 关键词:
- 海底管道;横向屈曲;铺管形状;临界荷载;后屈曲
- 摘要:
- 蛇形铺管法是一种有效控制管道横向屈曲的方法,该方法的关键是使管道在预设位置激发屈曲,且管道后屈曲的弯矩及应变控制在合理的范围内。文章提出了一种新的蛇形铺管形状,即正弦曲线形状,基于ANSYS软件建立了用于平坦海床上蛇形铺设管道横向屈曲分析的计算模型,对正弦曲线形状的蛇形铺管形状进行了分析,并与工程普遍采用的弧形铺管形状进行了对比。对比分析表明,正弦曲线铺管形状有效地降低了管道屈曲的临界荷载,且管道后屈曲的弯矩及应变更低。2010,3(3): 25-28 收稿日期：2010-1-20分类号：TE973.1基金项目：国家自然科学基金重点项目(50439010)作者简介：刘羽霄（1978-），女，山东临沂人，大连理工大学在读博士生，主要从事海底管道破坏机理研究工作。参考文献：
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