储罐底板提离试验及数值模拟分析
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摘要
对模型储罐进行振动台试验,测试储罐的位移地震响应,在此基础上运用大型有限元分析软件ADINA对模型储罐地震动响应进行了底板提离数值仿真分析。分析结果表明:无论是小体积罐还是大体积罐,在一定的地震强度下均可能发生提离,而且储罐发生提离的时刻大多数是在地震波的峰值过后发生的。底板提离区域为月牙形,提离位移沿环向的分布随不同的时刻改变。
In this paper,model tank is tested on seismic desk and its displacement response is tested.Then finite-element analytic software is used to analysis tank base lifting under seismic response.Analytic results show as follows: all the tanks may lift under certain seismic intensity,and the time of uplifting is after the peak value of seismic ground motion in most cases.The shape of lifting zone is crescent moon.The annular lifting displacement changes with time.
In this paper,model tank is tested on seismic desk and its displacement response is tested.Then finite-element analytic software is used to analysis tank base lifting under seismic response.Analytic results show as follows: all the tanks may lift under certain seismic intensity,and the time of uplifting is after the peak value of seismic ground motion in most cases.The shape of lifting zone is crescent moon.The annular lifting displacement changes with time.
引文
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[2]Haroun M A and Housner G W.Dynamic interaction ofliquid Storage tanks and foundation soil[A].Proc,Second ASCE/EMD Specialty Conf.On DynamicResponse of Structures ASCE[C],New York,N.Y.,346～360,1981
[3]唐立民,陈万吉,刘迎曦.有限元分析中的拟协调元[J].大连工学院学报,1980,19(2):19～35Tang Li-min,Chen Wan-ji,Liu Ying-xi.Quasi-Conforming Elements for Finite Element Analysis[J].Journal of Dalian University of Technology,1980,19(2):19～35(in Chinese)
[4]龙驭球,龙志飞.广义协调元法的进展[J].工程力学,1997,(A01):13～23Long Yu-qiu,Long Zhi-fei.Generalized conformingelement method for the progress of Evolve[J].Engineering Mechanics,1997,(A01):13～23(inChinese)
[5]梁立孚.变分原理及其应用[M].哈尔滨:哈尔滨工程大学出版社,2005Lang Li-fu.Variational principle and its application[M].Harbin:Harbin Engineering University Press,2005(in Chinese)
[6]钟万勰.应用力学对偶体系[M].北京:科学出版社,2003Zhong Wan-xie.Duality system in applied mechanics[m].Beijing:Science Press,2003(in Chinese)
[7]GB50191-93,构筑物抗震设计规范[S].中国计划出版社,1994GB50191-93,Code for Seismic Design of Structures[S].China Plans Press,1994(in Chinese)
[8]周敏.储液容器非线性动力分析[D].北京:清华大学博士学位论文,1989,10Zhou Min.Reserve non-linear dynamic analysis ofliquid containers[D].Beijing:Tsinghua University,1989,10(in Chinese)
[9]胡聿贤.地震工程学[M].北京:地震出版社,1988Hu Yu-xian.Earthquake Engineering[M].Beijing:Earthquake Press,1988(in Chinese)
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