地铁车站侧墙大面积开洞接风道三维地震响应
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摘要
基于有限差分软件FLAC3D计算平台,建立典型地铁车站侧墙大面积开洞接风道空间结构的数值模型,研究了其在水平地震动作用下的三维地震响应特性,确定了结构的薄弱部位,结果表明:车站边墙开洞处出现了较大的应力集中区,地铁车站负二层柱的最大或最小主应力总体上比负一层柱的大;与完整单体车站相比,车站侧墙开洞接风道结构的应力和变形幅值均比其相应位置大很多,而开洞处边墙的加速度响应却较小;因开洞使得洞口处下边墙加速度减小的幅度比上边墙的大;单体车站结构负二层的相对水平位移峰值比负一层的大,而侧墙大面积开洞处车站横断面负一层的相对水平位移峰值比负二层的大;同等条件下,输入地震动的主频分布范围越宽,地铁车站结构的变形与内力越大;中柱与顶板连接部位、侧墙开洞处的四周墙体及其附近区域柱子是结构抗震的薄弱部位.
Based on the finite difference software FLAC3 Dcomputing platform, a spatial structure numerical model of typical subway station with an extensive hole in lateral wall for connecting duct was established,then its 3D seismic response characteristics under horizontal ground motion was studied.Based on the model,the weak parts of the structure were obtained. The research results show that the hole location of the station wall appeared large stress concentration,the maximum or minimum principal stress of the lower column are bigger than the upper column's; by comparing with the complete single station,the internal force and deformation amplitude of open-hole structure are much larger than their corresponding locations,but the acceleration response of sidewall at hole location is smaller; reducing magnitude of the acceleration of lower wall caused by opening holes is larger than upper wall; the peak relative horizontal displacement of the lower floor of monomer station structure is greater than the upper's,to the subway station structure with an extensive hole,an opposite conclusion is gotten; under the same conditions,the wider main frequency distribution range of imported vibration is,the greater the deformation and internal force of subway station structure becomes; the wall around the open hole,the connection parts of pillars and roof and pillars near the open area are the weak parts of the structure. The study results can provide reference for the seismic design of parallel subway stationstructure in future.
Based on the finite difference software FLAC3 Dcomputing platform, a spatial structure numerical model of typical subway station with an extensive hole in lateral wall for connecting duct was established,then its 3D seismic response characteristics under horizontal ground motion was studied.Based on the model,the weak parts of the structure were obtained. The research results show that the hole location of the station wall appeared large stress concentration,the maximum or minimum principal stress of the lower column are bigger than the upper column's; by comparing with the complete single station,the internal force and deformation amplitude of open-hole structure are much larger than their corresponding locations,but the acceleration response of sidewall at hole location is smaller; reducing magnitude of the acceleration of lower wall caused by opening holes is larger than upper wall; the peak relative horizontal displacement of the lower floor of monomer station structure is greater than the upper's,to the subway station structure with an extensive hole,an opposite conclusion is gotten; under the same conditions,the wider main frequency distribution range of imported vibration is,the greater the deformation and internal force of subway station structure becomes; the wall around the open hole,the connection parts of pillars and roof and pillars near the open area are the weak parts of the structure. The study results can provide reference for the seismic design of parallel subway stationstructure in future.
引文
[1]谢顺意,施成华,彭立敏,等.地铁车站与风道交叉段施工力学行为数值模拟分析[J].铁道标准设计,2012,25(6):93-97.XIE Shun-yi,SHI Cheng-hua,PENG Li-min,et al.The construction mechanics behavior simulation analysis for subway station and its duct cross section[J].Railway Standard Design,2012,25(6):93-97.(in Chinese)
[2]吕虎.隧道联络通道施工力学行为研究[D].上海:同济大学土木工程学院,2006.LHu.Study on construction mechanics of cross passage of tunnel[D].Shanghai:School of Civil Engineering,Tongji University,2006.(in Chinese)
[3]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 subway station joint structure and 3D numerical simulation of seismic response[J].Chinese Journal of Geotechnical Engineering,2007,29(12):1892-1898.(in Chinese)
[4]还毅,方秦,陈力,等.强震作用下地铁车站结构损伤破坏的三维非线性动力分析[J].北京工业大学学报,2011,6(37):852-862.HUAN Yi,FANG Qin,CHEN Li,et al.3D nonlinear damage analysis of metro-station structures under strong seismic loading[J].Journal of Beijing University of Technology,2011,6(37):852-862.(in Chinese)
[5]庄海洋,吴祥祖,陈国兴.考虑初始静应力状态的土-地下结构非线性静动力相互作用研究[J].岩石力学与工程学报,2011,30(增刊1):3112-3119.ZHUANG Hai-yang,WU Xiang-zu,CHEN Guo-xing.Study of nonlinear static and dynamic coupling interaction of soilunderground structure considering initial static stress[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(Suppl 1):3112-3119.(in Chinese)
[6]HUO Hong-bin,BOBET A.Seismic design of cut and cover rectangular tunnels-evaluation of observed behavior of Dakai station during Kobe earthquake[C]∥Proceedings of1st World Forum of Chinese Scholars in Geotechnical Engineering.Shanghai:Tongji University Press,2003:456-466.
[7]CHEN Guo-xing,ZHUANG Hai-yang,LIU Wei-qing,et al.Analysis on the earthquake response of subway station based on the sub-structuring subtraction method[C]∥Proceedings of the Third International Conference on Earthquake Engineering.Nanjing:China Waterpower Press,2004:195-199.
[8]倪红,左熹.地铁地下车站结构的地震反应特性研究[J].北京工业大学学报,2011,11(37):1692-1698.NI Hong,ZUO Xi.Seismic response characteristics of subway station structure[J].Journal of Beijing University of Technology,2011,11(37):1692-1698.(in Chinese)
[9]刘如山,邬玉斌,杜修力.用纤维模型对地下结构地震破坏的数值模拟分析[J].北京工业大学学报,2011,11(36):1488-1494.LIU Ru-shan,WU Yu-bin,DU Xiu-li.Numerical simulation analysis on earthquake damage of underground structure with fiber model[J].Journal of Beijing University of Technology,2011,11(36):1488-1494.(in Chinese)
[10]王国波.软土地铁车站结构三维地震响应计算理论与方法的研究[D].上海:同济大学土木工程学院,2007.WANG Guo-bo.Study on calculation theory and method of three dimensional seismic response of subway station structures in soft soil[D].Shanghai:School of Civil Engineering,Tonji University,2007.(in Chinese)
[11]庄海洋,龙慧,陈国兴.复杂大型地铁地下车站结构非线性地震反应分析[J].地震工程与工程振动,2013,33(2):192-199.ZHUANG Hai-yang,LONG Hui,CHEN Guo-xing.Analysis of the nonlinear earthquake responses of a large complicated subway underground station[J].Journal of Earthquake Engineering and Engineering Vibration,2013,33(2):192-199.(in Chinese)
[12]张栋梁,王国波,杨林德,等.侧向连续开孔地铁车站结构的三维地震响应研究[J].地震研究,2009,32(1):46-50.ZHANG Dong-liang,WANG Guo-bo,YANG Lin-de,et al.3D seismic response of subway station structure with continuous holes in lateral wall[J].Journal of Seismological Research,2009,32(1):46-50.(in Chinese)
[2]吕虎.隧道联络通道施工力学行为研究[D].上海:同济大学土木工程学院,2006.LHu.Study on construction mechanics of cross passage of tunnel[D].Shanghai:School of Civil Engineering,Tongji University,2006.(in Chinese)
[3]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 subway station joint structure and 3D numerical simulation of seismic response[J].Chinese Journal of Geotechnical Engineering,2007,29(12):1892-1898.(in Chinese)
[4]还毅,方秦,陈力,等.强震作用下地铁车站结构损伤破坏的三维非线性动力分析[J].北京工业大学学报,2011,6(37):852-862.HUAN Yi,FANG Qin,CHEN Li,et al.3D nonlinear damage analysis of metro-station structures under strong seismic loading[J].Journal of Beijing University of Technology,2011,6(37):852-862.(in Chinese)
[5]庄海洋,吴祥祖,陈国兴.考虑初始静应力状态的土-地下结构非线性静动力相互作用研究[J].岩石力学与工程学报,2011,30(增刊1):3112-3119.ZHUANG Hai-yang,WU Xiang-zu,CHEN Guo-xing.Study of nonlinear static and dynamic coupling interaction of soilunderground structure considering initial static stress[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(Suppl 1):3112-3119.(in Chinese)
[6]HUO Hong-bin,BOBET A.Seismic design of cut and cover rectangular tunnels-evaluation of observed behavior of Dakai station during Kobe earthquake[C]∥Proceedings of1st World Forum of Chinese Scholars in Geotechnical Engineering.Shanghai:Tongji University Press,2003:456-466.
[7]CHEN Guo-xing,ZHUANG Hai-yang,LIU Wei-qing,et al.Analysis on the earthquake response of subway station based on the sub-structuring subtraction method[C]∥Proceedings of the Third International Conference on Earthquake Engineering.Nanjing:China Waterpower Press,2004:195-199.
[8]倪红,左熹.地铁地下车站结构的地震反应特性研究[J].北京工业大学学报,2011,11(37):1692-1698.NI Hong,ZUO Xi.Seismic response characteristics of subway station structure[J].Journal of Beijing University of Technology,2011,11(37):1692-1698.(in Chinese)
[9]刘如山,邬玉斌,杜修力.用纤维模型对地下结构地震破坏的数值模拟分析[J].北京工业大学学报,2011,11(36):1488-1494.LIU Ru-shan,WU Yu-bin,DU Xiu-li.Numerical simulation analysis on earthquake damage of underground structure with fiber model[J].Journal of Beijing University of Technology,2011,11(36):1488-1494.(in Chinese)
[10]王国波.软土地铁车站结构三维地震响应计算理论与方法的研究[D].上海:同济大学土木工程学院,2007.WANG Guo-bo.Study on calculation theory and method of three dimensional seismic response of subway station structures in soft soil[D].Shanghai:School of Civil Engineering,Tonji University,2007.(in Chinese)
[11]庄海洋,龙慧,陈国兴.复杂大型地铁地下车站结构非线性地震反应分析[J].地震工程与工程振动,2013,33(2):192-199.ZHUANG Hai-yang,LONG Hui,CHEN Guo-xing.Analysis of the nonlinear earthquake responses of a large complicated subway underground station[J].Journal of Earthquake Engineering and Engineering Vibration,2013,33(2):192-199.(in Chinese)
[12]张栋梁,王国波,杨林德,等.侧向连续开孔地铁车站结构的三维地震响应研究[J].地震研究,2009,32(1):46-50.ZHANG Dong-liang,WANG Guo-bo,YANG Lin-de,et al.3D seismic response of subway station structure with continuous holes in lateral wall[J].Journal of Seismological Research,2009,32(1):46-50.(in Chinese)
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