深埋盾构隧道结构抗震设计方法评价
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摘要
分析评价了反应位移法、反应加速度法应用于深埋盾构隧道结构抗震设计的差异。采用平面弹性理论的复变函数方法,提出了深埋结构的土体弹簧的解析解法,可以应用于反应位移法。设定某地质条件下的深埋典型盾构隧道结构为基准模型,用反应位移法、反应加速度法和动力时程法计算基准模型的结构刚度变化时的结构内力和变形,评价前两种方法的适用性。结果表明:反应加速度法的结果一般比反应位移法更接近动力时程法;反应位移法的结果一般是偏于安全的;反应加速度法不适用于结构刚度较小时的情况。
The differences in seismic responses of a deeply-buried shield tunnel computed with the response displacement method(ROM) and the response acceleration method(RAM) were analyzed and evaluated.Based on the planar strain assumption,the equivalent spring sriffness of the soil body was derived from the analytical solution using a simplified procedure.The performances of the two methods were evaluated and compared with that of the dynamic time history method through a selected benchmark numerical example.It was shown that in general,RAM was superior over RDM;compared with the dynamic time history method,RDM has safer results and RAM is not suitable for a structure with lower stiffness.
The differences in seismic responses of a deeply-buried shield tunnel computed with the response displacement method(ROM) and the response acceleration method(RAM) were analyzed and evaluated.Based on the planar strain assumption,the equivalent spring sriffness of the soil body was derived from the analytical solution using a simplified procedure.The performances of the two methods were evaluated and compared with that of the dynamic time history method through a selected benchmark numerical example.It was shown that in general,RAM was superior over RDM;compared with the dynamic time history method,RDM has safer results and RAM is not suitable for a structure with lower stiffness.
引文
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[9]黄茂松,曹杰.隧道地震响应简化分析与动力离心试验验证[J].岩石力学与工程学报,2010,29(2):271-280. HUANG Mao-song,CAO jie.Simplied analysis of tunnel earthquake response and centrifuge modeling calibration[J]. Chinese Journal of Rock Mechanics And Engineering,2010,29 (2):271 -280.
[10]England A H.Complex variable methods in elasticity[M]. New York;Dover Publications,2003.
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[2]张玉娥,白宝鸿,张耀辉,等.地铁区间隧道震害特点、震害分析方法及减震措施的探讨[J].振动与冲击,2003,22 (l):70-74. ZHANG Yu-e,BAI Bao-hong,ZHANG Yao-hui,et al.Study on subway tunnel' s behavior due to seismic damage,methods of analyzing seismic response and earthquake-proof means[J]. Journal of Vibration and Shock,2003,22(1):70 -74.
[3]小泉淳主编。张稳军,袁大军译.盾构隧道的抗震研究及算例[M].北京:中国建筑工业出版社,2009.
[4]刘如山,胡少卿,石宏彬.地下结构抗震计算中拟静力法的地震荷载施加方法研究[J].岩土工程学报,2007,29(2): 237-242. LIU Ru-shan,HU Shao-qing,SHI Hong-bin.Study on seismic loading of pseuo-static approach used in the seismic design of underground structure[J].Chinese Journal of Geotechnical Engineering,2007,29(2):237 -242.
[5]GB50111-2006.铁路工程抗震设计规范(2009年版)[S].北京:中国计划出版社,2006.
[6]福季耶娃著,徐显毅译.地震区地下结构物支护的计算[M].北京:煤炭工业出版社,1986.
[7]Nishida M,Matsui T.Applicability of seismic deformation method to aseismic analysis of underground linear structure [C].14~(th) International Offshore and Polar Engineering Conference,2004:600 -606.
[8]Tateishi A.A study on seismic analysis methods in the cross section of underground structures using static finite element method[J].Structural Engineering & Earthquake Engineering,JSCE,2005,22(1):41 -53.
[9]黄茂松,曹杰.隧道地震响应简化分析与动力离心试验验证[J].岩石力学与工程学报,2010,29(2):271-280. HUANG Mao-song,CAO jie.Simplied analysis of tunnel earthquake response and centrifuge modeling calibration[J]. Chinese Journal of Rock Mechanics And Engineering,2010,29 (2):271 -280.
[10]England A H.Complex variable methods in elasticity[M]. New York;Dover Publications,2003.
[11]林楠.地铁结构安全评估指标体系及标准研究[D].上海:同济大学,2009.
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