考虑初始静应力状态的土-地下结构非线性静、动力耦合作用研究
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摘要
针对已有研究方法的不足,开展土-地铁车站结构静、动力耦合作用理论和计算方法的初步研究,建立土-地下结构静、动力耦合非线性相互作用的物理力学分析模型,在此基础上开展一般场地上双层多跨大型地铁车站结构在静、动力耦合作用下的力学反应及其地震成灾机制研究。研究结果表明:在静、动力耦合作用下,双层多跨大型地铁车站结构构件出现地震震害的先后顺序为:中板与侧墙连接部位处的下表面、中柱顶底端、顶板与侧墙的连接部位下表面、底板侧跨中部上表面、顶板中跨与柱的连接部位上表面;(2)中柱的顶、底端和侧墙的底部为抗震最不利的部位,当输入地震动强度较小时,这些部位只发生局部受拉或受压破坏,当输入地震动强度增强时,这些部位往往会发生受拉和受压破坏交替出现的严重破坏;(3)具有脉冲特性的近场地震波更易造成地铁车站结构的动力损伤或地震破坏。
According to the limitation of existed methods used to analyze the earthquake response of soil-structure dynamic interaction,the nonlinear static and dynamic coupling interaction of soil-underground structure theory and calculation model are developed.Based on the model,the earthquake response and damage mechanism of subway station with two layers and three spans are analyzed,respectively.The research results show that:(1) Under the static and dynamic coupling loadings,the damage orders of subway station members are obtained in detail.The lower surface of middle slab near to the lateral wall is damaged firstly;and the severely damages take place on the ends of middle columns.The lower surface of the top slab near to the lateral wall,the upper surface of bottom slab on the side span,and the upper surface of top slab near to the middle column are damaged in turns.(2) As a whole,the ends of middle columns and the bottoms of lateral walls are damaged more easily and severely.The members of subway station are almost damaged by tensioning or compressing respectively when weak earthquake ground motion is inputted.However,when the earthquake ground motion become stronger,these members are damaged by tensioning and compressing simultaneously.(3) At the same time,the subway station may be damaged more easily and severely by near field earthquake.
According to the limitation of existed methods used to analyze the earthquake response of soil-structure dynamic interaction,the nonlinear static and dynamic coupling interaction of soil-underground structure theory and calculation model are developed.Based on the model,the earthquake response and damage mechanism of subway station with two layers and three spans are analyzed,respectively.The research results show that:(1) Under the static and dynamic coupling loadings,the damage orders of subway station members are obtained in detail.The lower surface of middle slab near to the lateral wall is damaged firstly;and the severely damages take place on the ends of middle columns.The lower surface of the top slab near to the lateral wall,the upper surface of bottom slab on the side span,and the upper surface of top slab near to the middle column are damaged in turns.(2) As a whole,the ends of middle columns and the bottoms of lateral walls are damaged more easily and severely.The members of subway station are almost damaged by tensioning or compressing respectively when weak earthquake ground motion is inputted.However,when the earthquake ground motion become stronger,these members are damaged by tensioning and compressing simultaneously.(3) At the same time,the subway station may be damaged more easily and severely by near field earthquake.
引文
[1]白冰,周健.软土地层隧道抗震稳定分析[J].佛山科学技术学院学报:自然科学版,2001,19(1):39-44.(BAI Bing,ZHOU Jian.The earthquake resistance stability analysis of tunnels surrounded by soft soil[J].Journal of Foshan University:Natural Science,2001,19(1):39-44.(in Chinese))
[2]陈健云,胡志强,林皋.超大型地下洞室群的随机地震响应分析[J].水利学报,2002,33(1):71-75.(CHEN Jianyun,HU Zhiqiang,LIN Gao.Random seismic response analysis of large-scale underground caverns[J].Journal of Hydraulic Engineering,2002,33(1):71-75.(in Chinese))
[3]HONGBIN H,ANTONIO B.Seismic design of cut and cover rectangular tunnels-evaluation of observed behavior of Dakai station during Kobe earthquake,1995[C]//Proceedings of 1st World Forum of Chinese Scholars in Geotechnical Engineering,August 20-22,2003.Shanghai:Tongji University,2003:456-466.
[4]谷音,刘晶波.非线性结构-地基动力相互作用问题的高效算法[J].福州大学学报:自然科学版,2009,37(1):118-124.(GU Yin,LIU Jinbo.The efficient method for nonlinear structure-foundation dynamic interaction problem[J].Journal of Fuzhou University:Natural Science,2009,37(1):118-124.(in Chinese))
[5]刘立平,李英民,韩军.桩-土动力相互作用分析模型的对比分析[J].地震工程与工程振动,2009,29(2):191-197.(LIU Liping,LI Yingmin,HAN Jun.Study on different analytical models of pile-soil dynamic interaction[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(2):191-197.(in Chinese))
[6]庄海洋,陈国兴,朱定华.土体动力黏塑性记忆型嵌套面本构模型及其验证[J].岩土工程学报,2006,28(10):1 267-1 272.(ZHUANG Haiyang,CHEN Guoxing,ZHU Dinghua.The dynamic visco-plastic memorial nested yield surface model of soil and its verification[J].Chinese Journal of Geotechnical Engineering,2006,28(10):1 267-1 272.(in Chinese))
[7]庄海洋,王修信,陈国兴.软土侧向大变形对地铁车站结构地震反应的影响规律研究[J].岩土工程学报,2009,31(8):1 258-1 266.(ZHUANG Haiyang,WANG Xiuxing,CHEN Guoxing.Study on the earthquake responses of subway station with the large lateral displacement of soft soil[J].Chinese Journal of Geotechnical Engineering,2009,31(8):1 258-1 266.(in Chinese))
[8]庄海洋.土-地下结构非线性动力相互作用及其大型振动台试验研究[博士学位论文][D].南京:南京工业大学,2006.(ZHUANG Haiyang.Study on nonlinear dynamic soil-underground structure interaction and its large-size shaking table test[Ph.D.Thesis][D].Nanjing:Nanjing University of Technology,2006.(in Chinese))
[9]JEEHO L,FENVES G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of engineering mechanics,1998,124(4):892-900.
[10]庄海洋.软土场地上地铁车站结构地震反应规律的研究[R].南京:东南大学,2009.(ZHUANG Haiyang.Analysis of the earthquake response of subway station building in soft soil[R].Nanjing:Southeast University,2009.(in Chinese))
[11]刘晶波,李彬.三维黏弹性静-动力统一人工边界[J].中国科学:E辑,2005,35(9):966-980.(LIU Jinbo,LI Bin.3D viscoelastic static-dynamic artificial boundary[J].Science in China:Serial E,2005,35(9):966-980.(in Chinese))
[2]陈健云,胡志强,林皋.超大型地下洞室群的随机地震响应分析[J].水利学报,2002,33(1):71-75.(CHEN Jianyun,HU Zhiqiang,LIN Gao.Random seismic response analysis of large-scale underground caverns[J].Journal of Hydraulic Engineering,2002,33(1):71-75.(in Chinese))
[3]HONGBIN H,ANTONIO B.Seismic design of cut and cover rectangular tunnels-evaluation of observed behavior of Dakai station during Kobe earthquake,1995[C]//Proceedings of 1st World Forum of Chinese Scholars in Geotechnical Engineering,August 20-22,2003.Shanghai:Tongji University,2003:456-466.
[4]谷音,刘晶波.非线性结构-地基动力相互作用问题的高效算法[J].福州大学学报:自然科学版,2009,37(1):118-124.(GU Yin,LIU Jinbo.The efficient method for nonlinear structure-foundation dynamic interaction problem[J].Journal of Fuzhou University:Natural Science,2009,37(1):118-124.(in Chinese))
[5]刘立平,李英民,韩军.桩-土动力相互作用分析模型的对比分析[J].地震工程与工程振动,2009,29(2):191-197.(LIU Liping,LI Yingmin,HAN Jun.Study on different analytical models of pile-soil dynamic interaction[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(2):191-197.(in Chinese))
[6]庄海洋,陈国兴,朱定华.土体动力黏塑性记忆型嵌套面本构模型及其验证[J].岩土工程学报,2006,28(10):1 267-1 272.(ZHUANG Haiyang,CHEN Guoxing,ZHU Dinghua.The dynamic visco-plastic memorial nested yield surface model of soil and its verification[J].Chinese Journal of Geotechnical Engineering,2006,28(10):1 267-1 272.(in Chinese))
[7]庄海洋,王修信,陈国兴.软土侧向大变形对地铁车站结构地震反应的影响规律研究[J].岩土工程学报,2009,31(8):1 258-1 266.(ZHUANG Haiyang,WANG Xiuxing,CHEN Guoxing.Study on the earthquake responses of subway station with the large lateral displacement of soft soil[J].Chinese Journal of Geotechnical Engineering,2009,31(8):1 258-1 266.(in Chinese))
[8]庄海洋.土-地下结构非线性动力相互作用及其大型振动台试验研究[博士学位论文][D].南京:南京工业大学,2006.(ZHUANG Haiyang.Study on nonlinear dynamic soil-underground structure interaction and its large-size shaking table test[Ph.D.Thesis][D].Nanjing:Nanjing University of Technology,2006.(in Chinese))
[9]JEEHO L,FENVES G L.Plastic-damage model for cyclic loading of concrete structures[J].Journal of engineering mechanics,1998,124(4):892-900.
[10]庄海洋.软土场地上地铁车站结构地震反应规律的研究[R].南京:东南大学,2009.(ZHUANG Haiyang.Analysis of the earthquake response of subway station building in soft soil[R].Nanjing:Southeast University,2009.(in Chinese))
[11]刘晶波,李彬.三维黏弹性静-动力统一人工边界[J].中国科学:E辑,2005,35(9):966-980.(LIU Jinbo,LI Bin.3D viscoelastic static-dynamic artificial boundary[J].Science in China:Serial E,2005,35(9):966-980.(in Chinese))
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