框架式地铁车站结构大地震近场地震反应特性的三维精细化非线性分析
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摘要
基于ABAQUS软件的32CPU显式有限元并行计算集群平台,建立了深软地基土-框架式地铁地下车站结构体系三维精细化非线性地震反应分析的有限元模型,数值模拟了汶川大地震清平波、卧龙波和100 a超越概率3%的南京人工地震波作用下深软地基上三层三跨框架式地铁地下车站结构地震反应特性的差异。结果表明:大地震近场强地震动将对深软地基上地下车站结构造成严重损伤,甚至发生塑性破坏或坍塌,柱、楼板、侧墙的结合部位是抗震的不利位置,中柱为抗震最薄弱构件,输入近场地震动的峰值加速度和频谱特性对地下车站结构的地震反应均有很大影响;地下车站结构的地震反应具有明显的空间效应,且在大地震近场强地震动作用下地下结构会产生单向累积的永久位移;清平波、卧龙波作用下地下车站结构的地震反应远大于100 a超越概率3%的南京人工地震波作用下的地震反应;结构浅埋部分的地震损伤比深埋部分更大。
Based on the explicit finite method of ABAQUS software and the 32CPU parallel computing cluster platform,a three-dimensional refined finite element model for deep soft soil-frame metro station structure is established to study its nonlinear seismic responses to Qingping and Wolong ground motions recorded during Wenchuang Earthquake and Nanjing artificial waves with the exceedance probability of 3% within 100 years.The results show that the underground frame metro station structure in deep soft site may be seriously damaged under near-field strong ground motion,and even plastic failure or collapse may appear.Moreover,the combining sites of pillars,floor slabs and side walls are in unfavorable positions in seismic resistance,while the pillars are the weakest components.In addition,the peak acceleration and the spectrum characteristics of the input near-field ground motions also have great influences on the earthquake response of the underground structure.The seismic response of the subway station structure has a noticeable three-dimensional effect.Furthermore,the structure will generate permanent displacements to be accumulated to one side under the near-field ground motion of large earthquake.The structural responses under Qingping and Wolong ground motions are obviously larger than those under Nanjing artificial waves.Besides,the seismic damage of shallowly buried parts is more than that of the deep ones.
Based on the explicit finite method of ABAQUS software and the 32CPU parallel computing cluster platform,a three-dimensional refined finite element model for deep soft soil-frame metro station structure is established to study its nonlinear seismic responses to Qingping and Wolong ground motions recorded during Wenchuang Earthquake and Nanjing artificial waves with the exceedance probability of 3% within 100 years.The results show that the underground frame metro station structure in deep soft site may be seriously damaged under near-field strong ground motion,and even plastic failure or collapse may appear.Moreover,the combining sites of pillars,floor slabs and side walls are in unfavorable positions in seismic resistance,while the pillars are the weakest components.In addition,the peak acceleration and the spectrum characteristics of the input near-field ground motions also have great influences on the earthquake response of the underground structure.The seismic response of the subway station structure has a noticeable three-dimensional effect.Furthermore,the structure will generate permanent displacements to be accumulated to one side under the near-field ground motion of large earthquake.The structural responses under Qingping and Wolong ground motions are obviously larger than those under Nanjing artificial waves.Besides,the seismic damage of shallowly buried parts is more than that of the deep ones.
引文
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[15]陈国兴,陈磊,景立平,等.地铁地下结构抗震分析并行计算的显式与隐式算法比较[J].铁道学报,2011,33(11):111-117.(CHEN Guo-xing,CHEN Lei,JING Li-ping,et al.Comparison of implicit and explicit methods with parallelcomputing for seismic response analysis of metrounderground structures[J].Journal of the China RailwaySociety,2011,33(11):111-117.(in Chinese))
[16]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.Developednonlinear dynamic constitutive relations of soils based onDavidenkov skeleton curve[J].Chinese Journal ofGeotechnical Engineering,2005,27(8):860-864.(inChinese))
[17]LEE J H,FENVES G L.Plastic-damage model for cyclicloading of concrete structures[J].Journal of EngineeringMechanics,1998,124(4):892-900.
[18]庄海洋,陈国兴,左熹.水平向地震下双层岛式地铁车站结构的动力变形特征[J].地震工程与工程振动,2007,27(6):140-147.(ZHUANG Hai-yang,CHEN Guo-xing,ZUO Xi.Anaysis of dynamic deformation characteristics oftwo-layer subway station structure under horizontalearthquakes[J].Journal of Earthquake Engineering andEngineering Vibration,2007,27(6):140-147.(in Chinese))
[19]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.Analysison evolution of nonlinear seismic damage of subway stationstructure[J].Earthquake Resistant Engineering andRetrofitting,2010,32(1):110-116.(in Chinese))
[2]SAMATA S,OHUCHI H,MATSUDA T.Study of thedamage of subway structures during the 1995 Hanshin-Awajiearthquake[J].Cement and Concrete Composites,1997,19(3):223-239.
[3]AN Xue-hui,SHAWSKY Ashraf A,MAEKAWA K.Collapsemechanism of a subway station during the great Hanshinearthquake[J].Cement and Concrete Composites,1997,19(3):241-257.
[4]IWATATE T,KOBAYASH Y,KUSU H,et al.Investigationand shaking table tests of subway structures of theHyogoken-Nanbu earthquake[C]//Proc of the 12WCEE,Auckland,New Zealand,2000:1043.
[5]TAMARI Y,TOWHATA I.Seismic soil-structure interactionof cross sections of flexible underground structures subjectedto soil liquefaction[J].Soils and Foundations,2003,43(2):69-87.
[6]ITO K,OHNO S,MATSUDA T.Seismic response ofunderground reinforced concrete structure-Centrifuge modeltest and its analysis[J].Structural Engineering/EarthquakeEngineering,2006,23(1):117-124.
[7]KUTTER B L,CHOU J C,TRAVASAROU T.Centrifugetesting of the seismic performance of a submergedcut-and-cover tunnel in liquefiable soil[C]//GeotechnicalSpecial Publication,n 181,Proceedings of the GeotechnicalEarthquake Engineering and Soil Dynamics IV Congress,ASCE,2008.
[8]陈磊,陈国兴.近断层强地震动下双层竖向重叠地铁隧道的地震反应[J].防灾减灾工程学报,2008,28(4):399-408.(CHEN Lei,CHEN Guo-xing.Seismic response oftwo-layer overlapping metro tunnel under near-fault strongground motion[J].Journal of Disaster Prevention andMitigation Engineering,2008,28(4):399-408.(in Chinese))
[9]陈国兴,庄海洋,杜修力,等.土-地铁隧道动力相互作用的大型振动台试验——试验结果分析[J].地震工程与工程振动,2007,27(1):164-170.(CHEN Guo-xing,ZHUANGHai-yang,DU Xiu-li,et al.A large-scale shaking table testfor dynamic soil-metro tunnel interaction:analysis of testresults[J].Journal of Earthquake Engineering andEngineering Vibration,2007,27(1):164-170.(in Chinese))
[10]陈国兴,庄海洋,杜修力,等.土-地铁车站结构动力相互作用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,ZHUANGHai-yang,DU Xiu-li,et al.Analysis of large-scale shakingtable test of dynamic soil-subway station interaction[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(2):171-176.(in Chinese))
[11]刘晶波,刘祥庆,薛颖亮.地下结构抗震分析与设计的Pushover方法适用性研究[J].工程力学,2009(1):49-57.(LIU Jing-bo,LIU Xiang-qing,XUE Ying-liang.Study onapplicability of a pushover analysis method for seismicanalysis and design of underground structures[J].EngineeringMechanics,2009(1):49-57.(in Chinese))
[12]杨林德,王国波,郑永来,等.地铁车站接头结构振动台模型试验及地震响应的三维数值模拟[J].岩土工程学报,2007,29(12):1892-1898.(YANG Lin-de,WANG Guo-bo,ZHENG Yong-lai,et al.Shaking table tests on subwaystation joint structure and 3D numerical simulation of seismicresponse[J].Chinese Journal of Geotechnical Engineering,2007,29(12):1892-1898.(in Chinese))
[13]王国波,杨林德,马险峰,等.地铁车站结构三维地震响应及土非线性分析[J].地下空间与工程学报,2008,4(2):234-237.(WANG Guo-bo,YANG Lin-de,MA Xian-feng,et al.Analysis of three-dimensional seismic response ofsubway station structure and non-linear characteristic ofsoil[J].Chinese Journal of Underground Space andEngineering,2008,4(2):234-237.(in Chinese))
[14]阚圣哲,陈国兴,陈磊.基于Abaqus软件的并行计算集群平台构建与优化方法[J].防灾减灾工程学报,2009,29(6):644-651.(KAN Sheng-zhe,CHEN Guo-xing,CHENLei.Parallel computing cluster platform’s construction andoptimization of Abaqus’numerical simulations[J].Journal ofDisaster Prevention and Mitigation Engineering,2009,29(6):644-651.(in Chinese))
[15]陈国兴,陈磊,景立平,等.地铁地下结构抗震分析并行计算的显式与隐式算法比较[J].铁道学报,2011,33(11):111-117.(CHEN Guo-xing,CHEN Lei,JING Li-ping,et al.Comparison of implicit and explicit methods with parallelcomputing for seismic response analysis of metrounderground structures[J].Journal of the China RailwaySociety,2011,33(11):111-117.(in Chinese))
[16]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.Developednonlinear dynamic constitutive relations of soils based onDavidenkov skeleton curve[J].Chinese Journal ofGeotechnical Engineering,2005,27(8):860-864.(inChinese))
[17]LEE J H,FENVES G L.Plastic-damage model for cyclicloading of concrete structures[J].Journal of EngineeringMechanics,1998,124(4):892-900.
[18]庄海洋,陈国兴,左熹.水平向地震下双层岛式地铁车站结构的动力变形特征[J].地震工程与工程振动,2007,27(6):140-147.(ZHUANG Hai-yang,CHEN Guo-xing,ZUO Xi.Anaysis of dynamic deformation characteristics oftwo-layer subway station structure under horizontalearthquakes[J].Journal of Earthquake Engineering andEngineering Vibration,2007,27(6):140-147.(in Chinese))
[19]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.Analysison evolution of nonlinear seismic damage of subway stationstructure[J].Earthquake Resistant Engineering andRetrofitting,2010,32(1):110-116.(in Chinese))
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