Analysis of fluctuating-wind-induced deformation response ofopen-topped cylindrical steel storage tanks

doi:10.16265/j.cnki.issn1003-3033.2018.06.019

Abstract

Abstract: To improve the safety design level of cylindrical steel storage tanks,numerical modeling of a 10×10⁴ m³ floating roof tank was carried out by using the finite element software ANSYS.A static analysis of tank under the average wind effect based on the "code of building load" was performed.Also,dynamic displacement response under fluctuating wind loading was evaluated through the time-history analysis.A further comparison was made between the two analysis results.The results show that under the basic wind pressure of 1 000 Pa,the peak value of the maximum of radial displacement of tank during the excitation time of 120 s is 7.76 mm,which has been estimated 120% greater than that under static wind loading.Moreover,the variation observed among the gust displacement factors at different key nodes is not significant,and that the overall displacement wind vibration coefficient of the storage tank can be taken as 2.2.

Key words: cylindrical steel storage tanks, wind loading, fluctuating wind, static wind, dynamic time-history analysis, gust displacement factor

CLC Number:

X937

HAO Xiaoxiao, HU Jinqiu, LIU Wencai, NIU Yun. Analysis of fluctuating-wind-induced deformation response ofopen-topped cylindrical steel storage tanks[J]. China Safety Science Journal, 2018, 28(6): 110-115.

References

[1] 石磊,帅健.大型原油储罐完整性管理体系研究[J].中国安全科学学报,2013,23(6):151-157.
SHI Lei,SHUAI Jian.Study on integrity management system for large crude oil tanks[J].China Safety Science Journal,2013,23(6):151-157.
[2] 魏化中,张占武,丁克勤,等.大型立式储罐风致静力屈曲分析[J].化工装备技术,2012,33(6):8-12.
WEI Huazhong,ZHANG Zhanwu,DING Keqin,et al.Buckling analysis of large vertical type storage tank by static wind load[J].Chemical Equipment Technology,2012,33(6):8-12.
[3] CHEN Lei,ROTTER J M.Buckling of anchored cylindrical shells of uniform thickness under wind load[J].Engineering Structures,2012,41(3):199-208.
[4] ZHAO Yang,LIN Yan.Buckling of cylindrical open-topped steel tanks under wind load[J].Thin-Walled Structures,2014,79(3):83-94.
[5] AZZUNI E,GUZEY S.Stability of open top cylindrical steel storage tanks:design of top wind girder[J].Journal of Pressure Vessel Technology,2017,139:312-322.
[6] 赵阳,林寅,余世策.大型低矮圆柱壳结构风荷载特性的风洞试验[J].浙江大学学报:工学版,2014,48(5):820-826.
ZHAO Yang,LIN Yin,YU Shice.Wind-tunnel test of wind loads on large cylindrical structures with very low aspect ratio[J].Journal of Zhejiang University:Engineering Science,2014,48(5):820-826.
[7] UEMATSU Y,KOO C,YASUNAGA J.Design wind force coefficients for open-topped oil storage tanks focusing on the wind-induced buckling[J].Journal of Wind Engineering and Industrial Aerodynamics,2014,130:16-29.
[8] 宫建国,刘迎圆,蒋力,等.大型石油储罐的风载荷响应分析[J].压力容器,2013(5):34-38.
GONG Jianguo,LIU Yingyuan,JIANG Li,et al.Response of large scale oil storage tanks subjected to wind load[J].Pressure Vessel Technology,2013(5):34-38.
[9] SOSA E M,GODOY L A.Nonlinear dynamics of above-ground thin-walled tanks under fluctuating pressures[J].Journal of Sound and Vibration,2005,283(1/2):201-215.
[10] GREINER R,DERLER P.Effect of imperfections on wind-loaded cylindrical shell[J].Thin-Walled Structure,1995,23(1/2/3/4):271-281.
[11] PRICHER M.Medium-length thin-walled cylinder under wind loading:case study[J].Journal of Structure Engineering,2004,130(12):2 062-2 069.
[12] RISH R F.Forces in cylindrical shells due to wind[J].Proceeding of the Institute of Civil Engineers,1967,36(4):791-803.
[13] GB 50009—2012,建筑结构荷载规范[S].
GB 50009-2012,Load code for the design of building structures[S].
[14] 林寅,赵阳,林巍.大型敞口钢油罐结构风荷载试验与风力稳定分析[J].华中科技大学学报:自然科学版,2014,42(7):66-71.
LIN Yin,ZHAO Yang,LIN Wei.Wind load test and buckling analysis of large steel open-top tanks[J].Journal of Huazhong University of Science and Technology:Nature Science,2014,42(7):66-71.
[15] MARAVEAS C,BALOKAS G A,TSAVDRIDIS K D.Numerical evaluation on shell buckling of empty thin-walled steel tanks under wind load according to current American and European design codes[J].Thin-Walled Structures,2015,95:152-160.
[16] SY/T 5921—2011,立式圆筒形钢制焊接油罐操作维护修理规程[S].
SY/T 5921-2011,Code of practice for operating,maintenance and repair of vertical cylindrical welded steel oil tank[S].