立式浮顶储罐基础隔震地震响应研究
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摘要
为研究浮顶储罐基础隔震地震响应问题,将浮顶假定为均质刚性圆板,波高振动形式受浮顶约束假设为沿半径线性分布.由速度势理论出发,建立液体运动势函数、基底剪力、倾覆力矩表达,由板振动理论建立浮顶运动方程,由能量原理建立罐体运动控制方程.采用时程分析方法研究了浮顶储罐基础隔震的地震响应,数值结果表明:隔震基频宜取2～3rad/s、隔震阻尼比宜取0.1,Ⅰ类、Ⅱ类场地减震率效果好于Ⅲ类、Ⅳ类场地,场地不同对波高的影响不同,高径比对隔震浮顶储罐的地震响应影响不大.
To study the seismic response of floating roof storage tank with the base isolation,the floating roof is assumed as a homogeneous rigid circular plate,the vibration form of wave height is assumed as linear distribu-tion along the radius.By the velocity potential theory,the velocity potential function of the liquid movement and the expression of base shear and overturning moment are established and by the plate vibration theory and energy principle,the motion equation for the floating roof and the motion equation for the tank system are pres-ented,respectively.With the time history analysis,the seismic responses for the isolated floating roof storage tanks are studied.The numerical results show that the fundamental frequency of isolation is applicable to be 2-3 rad/s,while the damping ratio of isolation is 0.1.The damping rates ofⅠ,Ⅱsite are better than those of Ⅲ,Ⅳsite.The effects of different sites on wave height are different,and the ratio of height to diameter has little effect on the seismic response of the isolated floating roof storage tanks.
To study the seismic response of floating roof storage tank with the base isolation,the floating roof is assumed as a homogeneous rigid circular plate,the vibration form of wave height is assumed as linear distribu-tion along the radius.By the velocity potential theory,the velocity potential function of the liquid movement and the expression of base shear and overturning moment are established and by the plate vibration theory and energy principle,the motion equation for the floating roof and the motion equation for the tank system are pres-ented,respectively.With the time history analysis,the seismic responses for the isolated floating roof storage tanks are studied.The numerical results show that the fundamental frequency of isolation is applicable to be 2-3 rad/s,while the damping ratio of isolation is 0.1.The damping rates ofⅠ,Ⅱsite are better than those of Ⅲ,Ⅳsite.The effects of different sites on wave height are different,and the ratio of height to diameter has little effect on the seismic response of the isolated floating roof storage tanks.
引文
[1]BERAHMAN F,BEHNAMFAR F.Seismic fragility curves for un-anchored on-grade steel storage tanks:bayesian approach[J].Journal of Earthquake Engi-neering,2007,11:166-192.
[2]HAMDAN F H.Seismic behaviour of cylindrical steel liquid storage tanks[J].Journal of Constructional Steel Research,2000,53:307-333.
[3]NIWA A,CLOUGH R W.Buckling of cylindrical liquid-storage tanks under earthquake loading[J].Earth-quake Engineering and Structure Dynamic,1982,10:107-122.
[4]RAMMERSTORFER F G,SCHARF K,FISH F D.Stor-age tanks under earthquake loading[J].ASME Ap-plied Mechanics Review,1990,43(11):261-282.
[5]NAKAGAWA K.On the vibration of an elevated water Tank II[R].Osaka:Osaka University,1955:317-336.
[6]YAMAMOTO Y.The liquid sloshing and the impulsive pressures of oil storage tanks due to earthquakes[J].Journal of High Pressure Institute of Japan,1965,3(1):2-8.
[7]MATSUI T.Sloshing in a cylindrical liquid storage tank with a single-deck type floating roof under seismic ex-citation[J].Journal of Pressure Vessel Technology,2009,131/021303-1-021303-10.
[8]MATSUI T,UEMATSU Y,KONDO K.Wind effects on dynamic response of a floating roof in a cylindrical liq-uid storage tank[J].Journal of Pressure Vessel Tech-nology,2009,131/031307-1-031307-10.
[9]孙建刚.立式储罐地震响应控制研究[D].哈尔滨:中国地震局工程力学研究所,2002.
[10]孙建刚,郝进峰,王振.储罐基底隔震振型分解反应谱计算分析研究[J].哈尔滨工业大学学报,2005,37(6):649-651.
[11]孙建刚,王向楠,张荣花,等.立式储罐并联隔震地震反应分析[J].哈尔滨工业大学学报,2009,41(10):105-109.
[12]CHALHOUB M S,KELLY J M.Shake table test of cy-lindrical water tank in base isolated structures[J].Jour-nal of Structural Engineering,ASCE,1990,116(7):1451-1472.
[13]MALHOTRA P K.New method for seismic base isola-tion of liquid storage tanks[J].Earthquake Engineering and Structural Dynamics,1997,26:839-847.
[14]KIM N S,LEE D G.Pseudo-dynamic test for evalua-tion of seismic performance of base isolated liquid stor-age tanks[J].Engineering Strcuctures,1995,17(3):198-208.
[15]SHRIMALI M K,JANGID R S.Seismic response of liquid storage tanks isolated by sliding bearings[J].Engineering Structure,2002,24(7):907-919.
[2]HAMDAN F H.Seismic behaviour of cylindrical steel liquid storage tanks[J].Journal of Constructional Steel Research,2000,53:307-333.
[3]NIWA A,CLOUGH R W.Buckling of cylindrical liquid-storage tanks under earthquake loading[J].Earth-quake Engineering and Structure Dynamic,1982,10:107-122.
[4]RAMMERSTORFER F G,SCHARF K,FISH F D.Stor-age tanks under earthquake loading[J].ASME Ap-plied Mechanics Review,1990,43(11):261-282.
[5]NAKAGAWA K.On the vibration of an elevated water Tank II[R].Osaka:Osaka University,1955:317-336.
[6]YAMAMOTO Y.The liquid sloshing and the impulsive pressures of oil storage tanks due to earthquakes[J].Journal of High Pressure Institute of Japan,1965,3(1):2-8.
[7]MATSUI T.Sloshing in a cylindrical liquid storage tank with a single-deck type floating roof under seismic ex-citation[J].Journal of Pressure Vessel Technology,2009,131/021303-1-021303-10.
[8]MATSUI T,UEMATSU Y,KONDO K.Wind effects on dynamic response of a floating roof in a cylindrical liq-uid storage tank[J].Journal of Pressure Vessel Tech-nology,2009,131/031307-1-031307-10.
[9]孙建刚.立式储罐地震响应控制研究[D].哈尔滨:中国地震局工程力学研究所,2002.
[10]孙建刚,郝进峰,王振.储罐基底隔震振型分解反应谱计算分析研究[J].哈尔滨工业大学学报,2005,37(6):649-651.
[11]孙建刚,王向楠,张荣花,等.立式储罐并联隔震地震反应分析[J].哈尔滨工业大学学报,2009,41(10):105-109.
[12]CHALHOUB M S,KELLY J M.Shake table test of cy-lindrical water tank in base isolated structures[J].Jour-nal of Structural Engineering,ASCE,1990,116(7):1451-1472.
[13]MALHOTRA P K.New method for seismic base isola-tion of liquid storage tanks[J].Earthquake Engineering and Structural Dynamics,1997,26:839-847.
[14]KIM N S,LEE D G.Pseudo-dynamic test for evalua-tion of seismic performance of base isolated liquid stor-age tanks[J].Engineering Strcuctures,1995,17(3):198-208.
[15]SHRIMALI M K,JANGID R S.Seismic response of liquid storage tanks isolated by sliding bearings[J].Engineering Structure,2002,24(7):907-919.
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