立式储罐基础隔震力学模型对比分析
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摘要
为了给立式储罐基础隔震提供设计理论支撑,基于现有储罐弹性理论的抗震模型,引入基础隔震措施,建立了便于工程设计人员应用的储罐基础隔震力学模型,同时与储罐弹性理论三质点隔震力学模型参数进行对比.针对1.5×105m3大型立式储罐,隔震层采用等效线性本构关系,选取峰值加速度为0.40g的El-Centro水平地震波作为地震动输入,运动方程采用数值积分方法求解,进行储罐弹性理论隔震模型参数及地震响应对比分析.结果表明:不同储罐弹性理论隔震模型的质量参数和高度参数差异不大,设计时可以互相对比参照计算,几种模型中对流质量占总质量70%以上,设计时应给予注意;隔震主要降低的是弹性脉冲分量引起的地震响应,隔震后长周期的对流分量起主导作用;从反映的实际情况出发,所提出的储罐弹性理论三质点隔震力学模型是可行的,适用的.
To provide base isolation design theory support of vertical storage tank,based on existing elastic theory seismic model,introducing the base isolation measures,the base isolation mechanical model was established,which was convenient to engineering design staff,at the same time,base isolation mechanical model was compared to elasticity theory three-mass tank isolation mechanical model which was author put.For 1.5×105 m3 vertical storage tanks,isolation layer using the equivalent linear model,selecting 0.40g El-Centro seismic wave as the ground motion input,the equations of motion using numerical integration method,the model parameters and seismic response were analyzed.The results showed that: several elastic theory tank isolation model mass and height parameters were similar,storage tank design could be compared with reference to calculation.Convective mass of several models more than 70% total mass,it should be give attention.Isolation reduces the earthquake response of elastic impulse component,while long period convective component plays a leading role.From the actual situation,elasticity theory three-mass tank isolation mechanical model of author was feasible and applicable.
To provide base isolation design theory support of vertical storage tank,based on existing elastic theory seismic model,introducing the base isolation measures,the base isolation mechanical model was established,which was convenient to engineering design staff,at the same time,base isolation mechanical model was compared to elasticity theory three-mass tank isolation mechanical model which was author put.For 1.5×105 m3 vertical storage tanks,isolation layer using the equivalent linear model,selecting 0.40g El-Centro seismic wave as the ground motion input,the equations of motion using numerical integration method,the model parameters and seismic response were analyzed.The results showed that: several elastic theory tank isolation model mass and height parameters were similar,storage tank design could be compared with reference to calculation.Convective mass of several models more than 70% total mass,it should be give attention.Isolation reduces the earthquake response of elastic impulse component,while long period convective component plays a leading role.From the actual situation,elasticity theory three-mass tank isolation mechanical model of author was feasible and applicable.
引文
[1]HOUSNER G W.Dynamic pressures on acceleratedfluid containers[J].Bulletin of the SeismologicalSociety of America,1957,47(1):15-35.
[2]HOUSNER G W.The dynamic behavior of water tanks[J].Bulletin of the Seismological Society of America,1963,53(2):381-387.
[3]JACOBSEN L S.Impulsive hydrodynamics of fluid insidea cylindrical tank and of fluid surrounding a cylindricalpier[J].Bulletin of the Seismological Society ofAmerica,1949,39(3):189-204.
[4]温德超,郑兆昌,孙焕纯.储液罐抗震研究进展[J].力学进展,1995,25(1):60-71.
[5]CEN-EC8-2003.Eurocode 8:design of structures forearthquake resistance;part 4:silos,tanks and pipelines[S].Brussels:European Committee for Standardization,2003.
[6]MALHOTRA P K,WENK T,WIELAND M.Simpleprocedure for seismic analysis of liquid storage tanks[J].Structural Engineering International:Journal of theIABSE,2000,10(3):197-201.
[7]API 650-2007.Welded steel tanks for oil storage[S].Washington:American Petroleum Institute,2007.
[8]HAROUN M A.Vibration studies and tests of liquidstorage tanks[J].Earthquake Engineering StructureDynamic,1983,11:179-206.
[9]SH3026—1990.常压立式储罐抗震鉴定标准[S].上海:中国石油化工总公司上海高桥石油化工公司,1990.
[10]HANDAM F H.Seismic behavior of cylindrical steelstorage tanks[J].Journal of Construction SteelResearch,2000,53:307-333.
[11]孙建刚.大型立式储罐隔震:理论、方法及实验[M].北京:科学出版社,2009.
[12]孙建刚,王向楠,赵长军.立式储罐基底隔震的基本理论[J].哈尔滨工业大学学报,2010,42(4):639-643.
[13]崔利富.大型LNG储罐基础隔震与晃动控制研究[D].大连:大连海事大学,2012.
[2]HOUSNER G W.The dynamic behavior of water tanks[J].Bulletin of the Seismological Society of America,1963,53(2):381-387.
[3]JACOBSEN L S.Impulsive hydrodynamics of fluid insidea cylindrical tank and of fluid surrounding a cylindricalpier[J].Bulletin of the Seismological Society ofAmerica,1949,39(3):189-204.
[4]温德超,郑兆昌,孙焕纯.储液罐抗震研究进展[J].力学进展,1995,25(1):60-71.
[5]CEN-EC8-2003.Eurocode 8:design of structures forearthquake resistance;part 4:silos,tanks and pipelines[S].Brussels:European Committee for Standardization,2003.
[6]MALHOTRA P K,WENK T,WIELAND M.Simpleprocedure for seismic analysis of liquid storage tanks[J].Structural Engineering International:Journal of theIABSE,2000,10(3):197-201.
[7]API 650-2007.Welded steel tanks for oil storage[S].Washington:American Petroleum Institute,2007.
[8]HAROUN M A.Vibration studies and tests of liquidstorage tanks[J].Earthquake Engineering StructureDynamic,1983,11:179-206.
[9]SH3026—1990.常压立式储罐抗震鉴定标准[S].上海:中国石油化工总公司上海高桥石油化工公司,1990.
[10]HANDAM F H.Seismic behavior of cylindrical steelstorage tanks[J].Journal of Construction SteelResearch,2000,53:307-333.
[11]孙建刚.大型立式储罐隔震:理论、方法及实验[M].北京:科学出版社,2009.
[12]孙建刚,王向楠,赵长军.立式储罐基底隔震的基本理论[J].哈尔滨工业大学学报,2010,42(4):639-643.
[13]崔利富.大型LNG储罐基础隔震与晃动控制研究[D].大连:大连海事大学,2012.
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