高举架立式圆筒型储液容器基础隔震有限元数值仿真分析
|
摘要
为了减轻强震对高举架立式圆筒型储液容器产生的破坏,采用基础隔震措施,对其地震动响应进行研究。基于ADINA有限元软件,罐壁、流体、支承及隔震层选取合适单元建立有限元模型。研究在不同阻尼比、不同隔震周期、不同地震动输入和不同储液高度等参数影响下高举架立式圆筒型储液容器的地震响应。结果表明:隔震周期越长减震率越大,但隔震层阻尼比对减震率影响不大;基础隔震高举架立式圆筒型储液容器的减震效应受地震波频谱特性影响较大;随着储液高度的增加,基础隔震减震率并无明显变化,均有较好的减震效果。基础隔震措施可优化支承结构设计,降低设防烈度,缩小截面尺寸,降低工程造价;基础隔震措施能有效控制支承的竖向反力,且不会产生上拔力,对支承倾覆无影响,可以优化基础设计。建议高举架立式圆筒型储液容器隔震设计时需综合多参数影响,选取最佳隔震设计方案。
In order to reduce the damage caused by strong motion earthquakes on the vertical cylindrical storage tank,the seismic response of the base isolation system was studied. Based on the ADINA finite element software,the tank wall,the fluid,the support and the base isolation layer are selected to establish the finite element model.Research seismic response of base isolation elevated vertical cylinder storage tanks with different parameters such as isolation layer damping ratio,isolation periods,different ground motion input and height of liquid storage. The results show that the isolation period longer damping rate is higher,but isolation layer damping ratio have few influence on the vibration reduction rate. The spectral characteristic of seismic have a big influence on the vibration reduction effect of base isolation elevated vertical cylinder storage tanks. The height of storage liquid have few influence on the vibration reduction rate,which is efficient. Base isolation measures to optimize the design of supporting structure,reduce seismic fortification intensity,reduce the size of the cross section,reduce the project cost; base isolation measures can be effectively controlled and supported the vertical reaction force and not have pulling force,to sup-port overturning effect and can optimize the design basis. Isolation earthquake design of elevated vertical cylinder storage tanks must consider a variety of parameters and select the best isolation design scheme.
In order to reduce the damage caused by strong motion earthquakes on the vertical cylindrical storage tank,the seismic response of the base isolation system was studied. Based on the ADINA finite element software,the tank wall,the fluid,the support and the base isolation layer are selected to establish the finite element model.Research seismic response of base isolation elevated vertical cylinder storage tanks with different parameters such as isolation layer damping ratio,isolation periods,different ground motion input and height of liquid storage. The results show that the isolation period longer damping rate is higher,but isolation layer damping ratio have few influence on the vibration reduction rate. The spectral characteristic of seismic have a big influence on the vibration reduction effect of base isolation elevated vertical cylinder storage tanks. The height of storage liquid have few influence on the vibration reduction rate,which is efficient. Base isolation measures to optimize the design of supporting structure,reduce seismic fortification intensity,reduce the size of the cross section,reduce the project cost; base isolation measures can be effectively controlled and supported the vertical reaction force and not have pulling force,to sup-port overturning effect and can optimize the design basis. Isolation earthquake design of elevated vertical cylinder storage tanks must consider a variety of parameters and select the best isolation design scheme.
引文
[1]孙颖,孙建刚,崔利富.大型立式浮顶储罐基础隔震数值研究[J].世界地震工程,2011,27(3):120-125.SUN Ying,SUN Jiangang,CUI Lifu.Numerical research on large base isolation vertical storage tanks with floating roof[J].World Earthquake Engineering,2011,27(3):120-125.(in Chinese)
[2]孙建刚,蒋峰,张荣花.隔震立式储罐地震反应谱分析[J].世界地震工程,2009,25(2):130-139.SUN Jiangang,JIANG Feng,ZHANG Ronghua.Earthquake response spectrum analysis of storage tanks with seismic isolation[J].World Earthquake Engineering,2009,25(2):130-139.(in Chinese)
[3]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.SUN Jiangang,WANG Xiangnan,ZHAO Changjun.Theoretical study on seismic isolation of storage tanks[J].Journal of Harbin institute of Technology,2010,42(4):639-643.(in Chinese)
[4]李扬,李自力,张艳.铅芯橡胶支座隔震储罐地震响应特性分析[J].工程抗震与加固改造,2009,31(3):39-72.LI Yang,LI Zili,ZHANG Yan.Seismic response characteristic of liquid storage tank isolated by lead rubber bearings[J].Earthquake Resistant Engineering and Retrofitting,2009,31(3):39-72.(in Chinese)
[5]Harry W Shenton III,Francis P Hampton.Seismic response of isolated elevated water tanks[J].Journal of Structural Engineering,1999,125(9):965-976.
[6]Shrimali M K,Jangid R S.Earthquake response of isolated elevated liquid storage steel tanks[J].Journal of Constructional Steel Research,2003(59):1267-1288.
[7]Curadelli O.Seismic reliability of spherical containers retrofitted by means of energy dissipation devices[J].Engineering Structures,2011(33):2662-2667.
[8]王振,沈笑飞,唐立强.基础隔震高举架储油罐地震反应分析[J].东北林业大学学报,2006,34(6):72-76.WANG Zhen,SHEN Xiaofei,TANG Liqiang.Seismic response of base isolation highly-elevated oil storage tanks[J].Journal of Northeast Forestry University,2006,34(6):72-76.(in Chinese)
[9]肖志刚.球形储液罐地震反应分析及减振方法研究[D].哈尔滨:哈尔滨工业大学,2006.XIAO Zhigang.Analyis of seismic responseand vibration dissipated method of spherical liquid-storage tank[D].Harbin:Harbin Institute of Technology,2006.(in Chinese)
[10]宫成欣.球形储罐地震反应及结构控制研究[D].大庆:大庆石油学院,2007.GONG Chengxin.Research on the earthquake response and structure control of the spherical storage tanks[D].Daqing:Daqing Petroleum Institute,2007.(in Chinese)
[11]李慧,王亚楠,杜永峰.土-结构动力相互作用对基础隔震结构的影响[J].工程非隔震与加固改造,2012,34(1):38-39.LI Hui,WANG Yanan,DU Yongfeng.Influence of soil-structure dynamic interaction on base-isolation structure[J].Earthquake Resistant Engineering and Retrofitting,2012,34(1):38-39.(in Chinese)
[2]孙建刚,蒋峰,张荣花.隔震立式储罐地震反应谱分析[J].世界地震工程,2009,25(2):130-139.SUN Jiangang,JIANG Feng,ZHANG Ronghua.Earthquake response spectrum analysis of storage tanks with seismic isolation[J].World Earthquake Engineering,2009,25(2):130-139.(in Chinese)
[3]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.SUN Jiangang,WANG Xiangnan,ZHAO Changjun.Theoretical study on seismic isolation of storage tanks[J].Journal of Harbin institute of Technology,2010,42(4):639-643.(in Chinese)
[4]李扬,李自力,张艳.铅芯橡胶支座隔震储罐地震响应特性分析[J].工程抗震与加固改造,2009,31(3):39-72.LI Yang,LI Zili,ZHANG Yan.Seismic response characteristic of liquid storage tank isolated by lead rubber bearings[J].Earthquake Resistant Engineering and Retrofitting,2009,31(3):39-72.(in Chinese)
[5]Harry W Shenton III,Francis P Hampton.Seismic response of isolated elevated water tanks[J].Journal of Structural Engineering,1999,125(9):965-976.
[6]Shrimali M K,Jangid R S.Earthquake response of isolated elevated liquid storage steel tanks[J].Journal of Constructional Steel Research,2003(59):1267-1288.
[7]Curadelli O.Seismic reliability of spherical containers retrofitted by means of energy dissipation devices[J].Engineering Structures,2011(33):2662-2667.
[8]王振,沈笑飞,唐立强.基础隔震高举架储油罐地震反应分析[J].东北林业大学学报,2006,34(6):72-76.WANG Zhen,SHEN Xiaofei,TANG Liqiang.Seismic response of base isolation highly-elevated oil storage tanks[J].Journal of Northeast Forestry University,2006,34(6):72-76.(in Chinese)
[9]肖志刚.球形储液罐地震反应分析及减振方法研究[D].哈尔滨:哈尔滨工业大学,2006.XIAO Zhigang.Analyis of seismic responseand vibration dissipated method of spherical liquid-storage tank[D].Harbin:Harbin Institute of Technology,2006.(in Chinese)
[10]宫成欣.球形储罐地震反应及结构控制研究[D].大庆:大庆石油学院,2007.GONG Chengxin.Research on the earthquake response and structure control of the spherical storage tanks[D].Daqing:Daqing Petroleum Institute,2007.(in Chinese)
[11]李慧,王亚楠,杜永峰.土-结构动力相互作用对基础隔震结构的影响[J].工程非隔震与加固改造,2012,34(1):38-39.LI Hui,WANG Yanan,DU Yongfeng.Influence of soil-structure dynamic interaction on base-isolation structure[J].Earthquake Resistant Engineering and Retrofitting,2012,34(1):38-39.(in Chinese)