地表建筑对地下车站结构地震响应的影响
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摘要
由于在地震中邻近地表建筑对地基周围场地的扰动,必然会对周围的地下结构动力响应产生影响。构建地表建筑-土-地下车站结构共同作用计算模型。在该计算模型中引入土体的非线性本构模型,同时考虑结构与土的接触面特性和地基无限域的影响,对该体系进行地震反应的时域分析。计算结果表明:由于地表邻近建筑物的存在,地下结构的位移、内力等地震响应均有较大的增加。同时研究地表建筑的自振周期和相对距离等因素的变化对地下结构动力响应的影响,得到一些规律性的结论,为工程设计提供有益参考。
Due to the disturbance of ground adjacent building to the site,the seismic response of underground structure in the site will be influenced.The non-linear interaction finite element models were set up,which are composed of buildings,soil and underground structures.A hysteretic nonlinear soil constitutive model was used in the analysis.In the interaction finite element models were taken into account,the contact surface characteristics between the structure and soil and the impact of foundation's infinite domain.The models were analyzed numerically in time domain.The results show that the displacement response and force response of underground station structure are significantly amplified due to the existence of ground adjacent building.Additionally,a comparative study on influencial factors which affect the seismic response of underground structures was carried out.Here,the influencial factors include natural periods of adjacent building and relative distances between ground buildings and underground structures.Some useful conclusions were obtained through analysis,which are beneficial to engineering designs.
Due to the disturbance of ground adjacent building to the site,the seismic response of underground structure in the site will be influenced.The non-linear interaction finite element models were set up,which are composed of buildings,soil and underground structures.A hysteretic nonlinear soil constitutive model was used in the analysis.In the interaction finite element models were taken into account,the contact surface characteristics between the structure and soil and the impact of foundation's infinite domain.The models were analyzed numerically in time domain.The results show that the displacement response and force response of underground station structure are significantly amplified due to the existence of ground adjacent building.Additionally,a comparative study on influencial factors which affect the seismic response of underground structures was carried out.Here,the influencial factors include natural periods of adjacent building and relative distances between ground buildings and underground structures.Some useful conclusions were obtained through analysis,which are beneficial to engineering designs.
引文
[1]陈国兴,庄海洋,徐烨.软弱地基浅埋隧洞对场地设计地震动的影响[J].岩土工程学报,2004(6):739-744.
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[3]杨书燕,姜忻良,李新国.隧道对临近建筑物的地震反应影响分析[J].四川大学学报(工程科学版),2007,39(3):41-46.
[4]李芳杰,赵风新,张郁山,等.相对位置的地上结构对地铁地下结构地震反应的影响[J].中国地震,2010,26(2):201-209.
[5]李芳杰.邻近建筑对地铁结构地震反应的影响研究[D].北京:中国地震局地球物理研究所,2009.
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[7]Martin P P,Seed H B.One dimensional dynamic groundresponse analysis[J].Journal of Geote-chnical Engineering,ASCE,1982,108(7):935-954.
[8]Huo H,Bobet A,Fernández G,et al.Load transfermechanisms between underground structure and surroundingground:evaluation of the failure of the dakai station[J].Journal of Geotechnical and Geo environmental Engineering,2005,131(12):1522-1533.
[9]庄海洋,陈国兴.土体动非线性粘弹性模型及其在ABAQUS软件上的实现[J].岩土力学,2007,28(3):436-442.
[10]Hibbitt,Karlsson and Sorensen,Inc..ABAQUS theory manualand analysis user’s manual[M].Pawtucket,USA,2002.
[11]Bettess P,Zienkiewica O C.Diffraction and refraction ofsurface wave using finite and infinite elements[J].Int.J.forNum.Mech.,In eng.1977:1271-1290.
[12]Seed H B,Idriss I M.Soil Moduli and damping factors fordynamic response analysis[R].Earthquake EngineeringResearch Center,University of California,Berkeley,ReportNo.EERC 70-10,1970.
[13]Lee J,Gregory L,Fenves.Plastic damage model for cyclicloading of concrete structures[J].Journal of EngineeringMechanics,1998,112(4):892-900.
[2]何伟,陈健云,于品清.地下结构开发对场地地表反应谱影响研究[J].地下空间与工程学报,2009,5(6):1098-1102.
[3]杨书燕,姜忻良,李新国.隧道对临近建筑物的地震反应影响分析[J].四川大学学报(工程科学版),2007,39(3):41-46.
[4]李芳杰,赵风新,张郁山,等.相对位置的地上结构对地铁地下结构地震反应的影响[J].中国地震,2010,26(2):201-209.
[5]李芳杰.邻近建筑对地铁结构地震反应的影响研究[D].北京:中国地震局地球物理研究所,2009.
[6]Gwinner J,Brosowski B.A penalty approximation for aunilateral contact problem in non-linear elasticity[J].Mathematical Methods in the Applied Sciences,1989,11(4):447-458.
[7]Martin P P,Seed H B.One dimensional dynamic groundresponse analysis[J].Journal of Geote-chnical Engineering,ASCE,1982,108(7):935-954.
[8]Huo H,Bobet A,Fernández G,et al.Load transfermechanisms between underground structure and surroundingground:evaluation of the failure of the dakai station[J].Journal of Geotechnical and Geo environmental Engineering,2005,131(12):1522-1533.
[9]庄海洋,陈国兴.土体动非线性粘弹性模型及其在ABAQUS软件上的实现[J].岩土力学,2007,28(3):436-442.
[10]Hibbitt,Karlsson and Sorensen,Inc..ABAQUS theory manualand analysis user’s manual[M].Pawtucket,USA,2002.
[11]Bettess P,Zienkiewica O C.Diffraction and refraction ofsurface wave using finite and infinite elements[J].Int.J.forNum.Mech.,In eng.1977:1271-1290.
[12]Seed H B,Idriss I M.Soil Moduli and damping factors fordynamic response analysis[R].Earthquake EngineeringResearch Center,University of California,Berkeley,ReportNo.EERC 70-10,1970.
[13]Lee J,Gregory L,Fenves.Plastic damage model for cyclicloading of concrete structures[J].Journal of EngineeringMechanics,1998,112(4):892-900.
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