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[1]仇经纬,段庆全,张宏,等.水流作用下悬跨管道振动的实验研究[J].油气储运,2014,33(4):391-394.[doi:10.6047/j.issn.1000-8241.2014.04.010]
　QIU Jingwei,DUAN Qingquan,ZHANG Hong,et al.Experimental study on vibration of free spanning pipeline caused by water flow[J].Oil & Gas Storage and Transportation,2014,33(4):391-394.[doi:10.6047/j.issn.1000-8241.2014.04.010]

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水流作用下悬跨管道振动的实验研究

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 33 期数: 2014年第4期页码: 391-394 栏目: 出版日期: 2014-04-25

Title:: Experimental study on vibration of free spanning pipeline caused by water flow

作者:: 仇经纬; 段庆全; 张宏; 张晨; 中国石油大学（北京）机械与储运工程学院, 北京102249

Author(s):: QIU Jingwei; DUAN Qingquan; ZHANG Hong; ZHANG Chen; College of Mechanical and Transportation Engineering, China University of Petroleum(Beijing), Beijing, 102249

关键词:: 悬跨管道; 涡激振动; 悬跨长度; 相似分析; 实验验证

Keywords:: free spanning pipeline; vortex-induced vibration; spanning length; similarity analysis; experimental verification

分类号:: TE88

DOI:: 10.6047/j.issn.1000-8241.2014.04.010

摘要:: 为了比较得到水下管道安全悬跨长度的判别条件并验证其合理性。使用弹性力-重力相似理论设计模型实验，管道两端均采用固定约束，管道与水流之间的角度分别为90°、75°、60°、45°和30°，悬跨管长分别为1.00 m、0.81 m、0.73 m、0.70 m。通过实验比较f_n≥10 f_s、f_n≥（0.7）^-1f_s、f_n＝5 f_s（f_n为悬跨管道固有频率；f_s为水流激振频率）3种条件对悬跨管道振动的判别情况。研究表明，根据f_n＝5 f_s，即约化速度V_r=1的条件，计算得到的临界长度较安全、合理，并由f_n＝5 f_s条件给出了不同管径、壁厚和流速条件下管道临界长度的规律图，研究结果可为水下悬跨管道的安全评价提供借鉴。

Abstract:: In order to identify and justify the conditions for discriminating safe spanning length of an underwater pipeline, a model experiment is designed according to the elastic force-gravity similarity theory.The pipeline is fixed at both ends, having an angle with water flow of 90°,75°,60°,45°and 30°respectively and freely spanning for 1.00 m,0.81 m,0.73 m and 0.70 m respectively.During the experiment,the free spanning pipeline is discriminated for vibration under 3 conditions, i.e.,f_n ≥10f_s,f_n ≥(0.7)^-1f_s and f_n=5 f_s (f_n is the natural frequency of free spanning pipeline,f_s is the vibration frequency of water flow).The results show a safe and reasonable critical length at f_n=5 f_s (i.e.,the reduced velocity V_r =1).The critical lengths are plotted under the condition of f_n=5 f_s,depending on diameter,wall thickness and flow rate.This study can provide references for safety assessment of free spanning pipeline underwater.(3 Figures,2 Tables,13 References)

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备注/Memo

收稿日期:2013-4-22;改回日期:2013-11-5。
作者简介:仇经纬，在读博士生，1989年生，2011年毕业于中国石油大学（北京）油气储运工程专业，现主要从事油气管道结构安全性分析的研究工作。Tel：18810908801，Email：paul-qiu@163.com

更新日期/Last Update: 1900-01-01