IMECH-IR  > 环境力学重点实验室(2009-2011)
近底床悬跨海管安全跨长的预测
Alternative TitlePrediction on safety length of free spanning pipeline near seabed
李磊; 曹玉龙; 林缅
Source Publication中国石油大学学报(自然科学版)
2010-04-20
Issue02Pages:119-124+129
Abstract由修正势流理论获得了海管沿轴向升力分布,运用海管的小挠度微分方程,通过有限元计算得到有混凝土配重海管的平衡位移和应力,分析跨肩约束、混凝土刚度和来流速度对最大位移和最大应力的影响,讨论悬跨长度增加时刚度失效和强度失效的行为规律,给出不同跨肩约束条件下随间隙比和来流速度变化的安全跨长分区图。结果表明:悬跨海管首先出现刚度失效,触底后则会发生强度失效;间隙比和跨肩约束是影响安全跨长的重要因素;来流速度小时,必须考虑海管的静态临界安全跨长。
Keyword悬跨海管 修正势流法 升力系数 安全跨长 分区图
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Indexed ByEI
Language中文
Funding Organization国家“863”目标导向项目(2006AA09Z301)
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/43792
Collection环境力学重点实验室(2009-2011)
Corresponding Author李磊
Recommended Citation
GB/T 7714
李磊,曹玉龙,林缅. 近底床悬跨海管安全跨长的预测[J]. 中国石油大学学报(自然科学版),2010(02):119-124+129.
APA 李磊,曹玉龙,&林缅.(2010).近底床悬跨海管安全跨长的预测.中国石油大学学报(自然科学版)(02),119-124+129.
MLA 李磊,et al."近底床悬跨海管安全跨长的预测".中国石油大学学报(自然科学版) .02(2010):119-124+129.
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