土-地铁隧道动力相互作用模型试验分析
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摘要
本文对土的动力特性本构模型以及土-结构的接触面模型进行了较详细的探讨,最后分别选用非线性等价粘弹性模型和Ramberg-Osgood模型。分析表明,在进行模型试验设计时,不仅材料要满足相似性原理,而且在设计边界条件和地震波输入时也应以上述模型为参照。通过对一圆形隧道的地震反应分析,表明拱顶处的最大动应力是圆形隧道出现裂痕的主要原因,进而分析了孔隙率对结构横向变形的影响,分析结果与实际工程情况较为吻合。本文的研究成果可为地铁隧道的抗震设计提供一定的参考意见。
Dynamic constitutive model of soils and contact model of soil & structure are analyzed in detail,non-linear equivalent viscoelastic model and Ramber-Osgood model are employed to study the dynamic interaction of soils and subway tunnel.The analysis results also indicate that the materials used in the models should not only satisfy the similarity theory in the model test,but also refer to the above selected models in the design of boundary conditions and earthquake input.The dynamic response of circle tunnel induced by earthquake wave is analyzed,and the results show that the maximum of the dynamic-load stress is located on the keystone,which results in cracks at the top of tunnel.And the influence of porosity on the lateral deformation of structure is also analyzed.The theory analysis of this case study is validated by the fact of this engineering.Thus,the results presented in this paper referes for the earthquake-resistance designing of this subway tunnel.
Dynamic constitutive model of soils and contact model of soil & structure are analyzed in detail,non-linear equivalent viscoelastic model and Ramber-Osgood model are employed to study the dynamic interaction of soils and subway tunnel.The analysis results also indicate that the materials used in the models should not only satisfy the similarity theory in the model test,but also refer to the above selected models in the design of boundary conditions and earthquake input.The dynamic response of circle tunnel induced by earthquake wave is analyzed,and the results show that the maximum of the dynamic-load stress is located on the keystone,which results in cracks at the top of tunnel.And the influence of porosity on the lateral deformation of structure is also analyzed.The theory analysis of this case study is validated by the fact of this engineering.Thus,the results presented in this paper referes for the earthquake-resistance designing of this subway tunnel.
引文
[1]门玉明,汪班桥,刘妮娜等.近10年来国内外破坏性地震对地震工程地质研究的几点启示[J].工程地质学报,2002,10(1):36～41.Men Yumin,Wang Banqiao,Liu Nina et al.。Some revelations to seismic engineering geology study by world’s destructive earth-quake in recent ten years.Journal of Engineering Geology,2002,10(1):36～41.
[2]邓芃.在地震作用下土与浅埋隧道的东相互作用的非线性分析[D].天津:天津大学图书馆,2003,2～6.Deng Fan.Anti-seismic study on metro tunnel based on soil-structure dynamic interaction.Tanjin:Tianjin University Library,2003.
[3]张鸿,毕继红,张伟.地铁隧道地震反映非线性分析[J].地震工程与工程振动,2004,24(6):146～153.Zhang Hong,Bi Jihong,Zhang Wei.Nonlinear analysis of seismic response of metro tunnel.Earthquake Engineering and Engineering Vibration,2004,24(6):146～153.
[4]毕继红,张鸿,邓芃.基于耦合性分析法的地铁隧道抗震研究[J].岩土力学,2003,24(5):800～803.Bi Jihong,Zhang Hong,Deng Fan.Nonlinear analysis of seismic response of metro tunnel.Rock and soil mechanics,2003,24(5):800～803.
[5]谢定义.土动力学[M].西安:西安交通大学出版社,1988.Xie Dingyi.Soil dynamics.Xi’an:Xi'an Jiaotong University Press,1988.
[6][日]北村春幸,裴星洙(译).基于性能设计的建筑振动解析[M].西安:西安交通大学出版社,2004.[Japan]Beichun Chunxin,Pei Xingzhu(translation).Seismic re-sponse analysis methods for performance based design.Xi’an:Xi'an Jiaotong University Press,2004.
[6]杨俊杰.相似理论与结构模型试验[M].武汉:武汉理工大学出版社,2005.Yang Junjie.Simultaneous theory and model test of structure.Wu-han:Wuhan University of Technology Press,2005.
[7]郑永来,杨林德,李文艺等.地下结构抗震[M].上海:同济大学出版社,2005.Zheng Yonglai,Yang Linde,Li Wenyi,et al..The seismic design of underground structure.Shanghai:Tongji University Press,2005.
[8]吕西林,蒋欢军.结构地震作用和抗震概念设计[M].武汉:武汉理工大学出版社,2004.Lv Xiling,Jiang Pingjun.Earthquake active and seismic design.Wuhan:Wuhan University of Technology Press,2004.
[9]李围,何川,张志强.大型地下结构下修建盾构隧道模型试验[J].西南交通大学学报,2005,40(4):478～483.Li Wei,He Chuan,Zhang Zhiqiang.Model test of constructing shield tunnel under large underground structure.Journal of South-west Jiaotong University,2005,40(4):478～483.
[2]邓芃.在地震作用下土与浅埋隧道的东相互作用的非线性分析[D].天津:天津大学图书馆,2003,2～6.Deng Fan.Anti-seismic study on metro tunnel based on soil-structure dynamic interaction.Tanjin:Tianjin University Library,2003.
[3]张鸿,毕继红,张伟.地铁隧道地震反映非线性分析[J].地震工程与工程振动,2004,24(6):146～153.Zhang Hong,Bi Jihong,Zhang Wei.Nonlinear analysis of seismic response of metro tunnel.Earthquake Engineering and Engineering Vibration,2004,24(6):146～153.
[4]毕继红,张鸿,邓芃.基于耦合性分析法的地铁隧道抗震研究[J].岩土力学,2003,24(5):800～803.Bi Jihong,Zhang Hong,Deng Fan.Nonlinear analysis of seismic response of metro tunnel.Rock and soil mechanics,2003,24(5):800～803.
[5]谢定义.土动力学[M].西安:西安交通大学出版社,1988.Xie Dingyi.Soil dynamics.Xi’an:Xi'an Jiaotong University Press,1988.
[6][日]北村春幸,裴星洙(译).基于性能设计的建筑振动解析[M].西安:西安交通大学出版社,2004.[Japan]Beichun Chunxin,Pei Xingzhu(translation).Seismic re-sponse analysis methods for performance based design.Xi’an:Xi'an Jiaotong University Press,2004.
[6]杨俊杰.相似理论与结构模型试验[M].武汉:武汉理工大学出版社,2005.Yang Junjie.Simultaneous theory and model test of structure.Wu-han:Wuhan University of Technology Press,2005.
[7]郑永来,杨林德,李文艺等.地下结构抗震[M].上海:同济大学出版社,2005.Zheng Yonglai,Yang Linde,Li Wenyi,et al..The seismic design of underground structure.Shanghai:Tongji University Press,2005.
[8]吕西林,蒋欢军.结构地震作用和抗震概念设计[M].武汉:武汉理工大学出版社,2004.Lv Xiling,Jiang Pingjun.Earthquake active and seismic design.Wuhan:Wuhan University of Technology Press,2004.
[9]李围,何川,张志强.大型地下结构下修建盾构隧道模型试验[J].西南交通大学学报,2005,40(4):478～483.Li Wei,He Chuan,Zhang Zhiqiang.Model test of constructing shield tunnel under large underground structure.Journal of South-west Jiaotong University,2005,40(4):478～483.
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