地铁地下车站结构的地震反应特性研究
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摘要
通过Davidenkov动力本构模型模拟土体、动塑性损伤模型模拟混凝土的动力特性,建立土-地铁地下车站相互作用的二维有限元分析模型,研究地铁车站结构的地震损伤演化规律和能量反应特性,结果表明:地震动特性对地铁车站结构的能量反应特征有明显影响,地铁车站结构的阻尼耗能和滞回耗能逐步增加;通过滞回耗能密度衡量各构件滞回能量耗散的集中效应,发现中柱的滞回能量最为集中,说明地震动作用下中柱的动力反应最大;通过对地铁车站结构的地震损伤过程研究,发现局部和整体损伤指数时程变化规律一致,在变形累积效应下表现出递增特性.
The dynamic Davidenkov model is used to model dynamic characteristics of soils,and plastic-damage model is used to model dynamic characteristics of station structure concrete.So that,considering the influence of soil-station structure interaction for 2D finite element analysis,the dynamic interaction of soil-station structure is modeled.The damage characteristics and energy response of station structure under seismic motion is analyzed.The result shows that damping energy and hysteretic energy are monotone increasing under ground motion,and the seismic characteristic has significant effect on the energy response of subway station structure.Furthermore,concentration effect of hysteretic energy of subway station structure is measured by hysteretic energy density.It is found that the hysteretic energy is the most centralized in the column,so the dynamic response of the columns is the maximum.Furthermore,the nonlinear damage evolution law of station structure is analyzed.The law of local and global damage index is consistent essentially,and the damage index is increased by the effect of accumulative deformation.
The dynamic Davidenkov model is used to model dynamic characteristics of soils,and plastic-damage model is used to model dynamic characteristics of station structure concrete.So that,considering the influence of soil-station structure interaction for 2D finite element analysis,the dynamic interaction of soil-station structure is modeled.The damage characteristics and energy response of station structure under seismic motion is analyzed.The result shows that damping energy and hysteretic energy are monotone increasing under ground motion,and the seismic characteristic has significant effect on the energy response of subway station structure.Furthermore,concentration effect of hysteretic energy of subway station structure is measured by hysteretic energy density.It is found that the hysteretic energy is the most centralized in the column,so the dynamic response of the columns is the maximum.Furthermore,the nonlinear damage evolution law of station structure is analyzed.The law of local and global damage index is consistent essentially,and the damage index is increased by the effect of accumulative deformation.
引文
[1]刘晶波,李彬,谷音.地铁盾构隧道地震反应分析[J].清华大学学报:自然科学版,2005,45(6):757-760.LIU Jing-bo,LI Bin,GU Yin.Seismic response analysis of shielded subway tunnels[J].Tsinghua University Science andTechnology:Natural Science Edition,2005,45(6):757-760.(in Chinese)
[2]姜忻良,宋丽梅.软土地层中地下隧道结构地震反应分析[J].地震工程与工程振动,1999,19(1):65-69.JIANG Xing-liang,SONG Li-mei.Seismic response analysis of underground tunnel in soft soil[J].Earthquake Engineeringand Engineering Vibration,1999,19(1):65-69.(in Chinese)
[3]陈国兴,庄海洋,杜修力,等.土-地铁车站动力相互作用的大型振动台模型试验研究[J].地震工程与工程振动,2007,27(2):171-176.CHEN Guo-xing,ZHUANG Hai-yang,DU Xiu-li,et al.Analysis of large-scale shaking table test of dynamic soil-subwaystation interaction[J].Earthquake Engineering and Engineering Vibration,2007,27(2):171-176.(in Chinese)
[4]左熹,杨树才,陈国兴.地铁车站结构非线性地震损伤演化规律分析[J].工程抗震与加固改造,2010,32(1):110-116.ZUO Xi,YANG Shu-cai,CHEN Guo-xing.Analysis on evolution of nonlinear seismic damage of subway station structure[J].Earthquake Resistant Engineering and Retrofitting,2010,32(1):110-116.(in Chinese)
[5]陈国兴,左熹,庄海洋,等.地铁车站结构大型振动台试验与数值模拟的比较研究[J].地震工程与工程振动,2008,28(1):157-164.CHEN Guo-xing,ZUO Xi,ZHUANG Hai-yang.A comparison between large-size shaking table test results and numericalsimulation of a subway station structure[J].Earthquake Engineering and Engineering Vibration,2008,28(1):157-164.(inChinese)
[6]LEE J,FENVES G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of Engineering Mechanics,1998,124(8):892-900.
[7]陈国兴,庄海洋.基于Davidenkov骨架曲线的土体动力本构关系及其参数研究[J].岩土工程学报,2005,27(8):860-864.CHEN Guo-xing,ZHUANG Hai-yang.Developed nonlinear dynamic constitutive relations of soils based on Davidenkovskeleton curve[J].Chinese Jounal of Geotechnical Engineering,2005,27(8):860-864.(in Chinese)
[8]王道荣.高速侵彻现象的工程分析方法和数值模拟研究[D].合肥:中国科学技术大学工程科学学院,2002.WANG Dao-rong.Study on engineering analytical model and numerical simulation on hypervelocity penetration[D].Hefei:University of Science and Technology of China,2002.(in Chinese)
[2]姜忻良,宋丽梅.软土地层中地下隧道结构地震反应分析[J].地震工程与工程振动,1999,19(1):65-69.JIANG Xing-liang,SONG Li-mei.Seismic response analysis of underground tunnel in soft soil[J].Earthquake Engineeringand Engineering Vibration,1999,19(1):65-69.(in Chinese)
[3]陈国兴,庄海洋,杜修力,等.土-地铁车站动力相互作用的大型振动台模型试验研究[J].地震工程与工程振动,2007,27(2):171-176.CHEN Guo-xing,ZHUANG Hai-yang,DU Xiu-li,et al.Analysis of large-scale shaking table test of dynamic soil-subwaystation interaction[J].Earthquake Engineering and Engineering Vibration,2007,27(2):171-176.(in Chinese)
[4]左熹,杨树才,陈国兴.地铁车站结构非线性地震损伤演化规律分析[J].工程抗震与加固改造,2010,32(1):110-116.ZUO Xi,YANG Shu-cai,CHEN Guo-xing.Analysis on evolution of nonlinear seismic damage of subway station structure[J].Earthquake Resistant Engineering and Retrofitting,2010,32(1):110-116.(in Chinese)
[5]陈国兴,左熹,庄海洋,等.地铁车站结构大型振动台试验与数值模拟的比较研究[J].地震工程与工程振动,2008,28(1):157-164.CHEN Guo-xing,ZUO Xi,ZHUANG Hai-yang.A comparison between large-size shaking table test results and numericalsimulation of a subway station structure[J].Earthquake Engineering and Engineering Vibration,2008,28(1):157-164.(inChinese)
[6]LEE J,FENVES G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of Engineering Mechanics,1998,124(8):892-900.
[7]陈国兴,庄海洋.基于Davidenkov骨架曲线的土体动力本构关系及其参数研究[J].岩土工程学报,2005,27(8):860-864.CHEN Guo-xing,ZHUANG Hai-yang.Developed nonlinear dynamic constitutive relations of soils based on Davidenkovskeleton curve[J].Chinese Jounal of Geotechnical Engineering,2005,27(8):860-864.(in Chinese)
[8]王道荣.高速侵彻现象的工程分析方法和数值模拟研究[D].合肥:中国科学技术大学工程科学学院,2002.WANG Dao-rong.Study on engineering analytical model and numerical simulation on hypervelocity penetration[D].Hefei:University of Science and Technology of China,2002.(in Chinese)
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