Fundamental study on seismic stability of tunnels in weakly cemented soil and its countermeasures

弱胶结土隧道地震稳定性基础研究及对策

• 批准号: 20246079
• 负责人: KUSAKABE Osamu
• 金额: $ 28.62万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20246079/
• 关键词: 地震; NATM; 埋設管; 地盤変形; 断層; 堆積層; 遠心模型; 重力場模型; 遠心模型実験; 構造工学・地震工学; 地盤工学

Tunnels in weakly cemented or no-cemented soils are susceptible to damages by ground motions or displacements caused by earthquake. In order to investigate complicated seismic soil-structure interaction of such tunnels, various model testing techniques has been developed, such as an active type shear box and a fault simulators. Three specific conditions were considered in this study, namely, 1) shallow tunnels which are subjected to shear deformation of grounds, 2) Tunnels in weak ground which is subjected to large earth pressure, and 3) tunnels in an alluvium subjected to fault displacement. From the model test results and numerical simulation, typical deformation and failure mechanism of these tunnels are scrutinized and effective countermeasures against them are discussed.

在弱胶结或无胶结土层中修建的隧道容易受到地震引起的位移或地面运动的破坏。为了研究此类隧道复杂的地震土-结构相互作用，发展了各种模型试验技术，如主动式剪切盒和断层模拟器。研究中考虑了三种具体情况，即：1）浅埋隧道受地层剪切变形的影响，2）软弱地层中隧道受大土压力的影响，3）冲积层中隧道受断层位移的影响。通过模型试验和数值模拟，分析了隧道的典型变形破坏机理，并探讨了有效的防治措施。

项目成果

Development of a faulf simulator in a centrifuge and preliminary study on a buried pipe subjected to a fault differential displacement

离心机故障模拟器的研制及埋地管道故障差分位移的初步研究

• 发表时间: 2010
• 期刊: Proc.3rd Asia Conference on Earthquake Engineering (3ACEE)
• 作者: J.Takemura;Y.Ishii;O.Kusakabe
• 通讯作者: O.Kusakabe

A Comparative Study between Dynamic Shake Table Test and Shear Box Test in a Centrifuge

离心机动态振动台试验与剪切箱试验的对比研究

• 发表时间: 2009
• 期刊: International Jornal of Physical Modelling in Geotechnics
• 作者: Shibayama;S.;et al.
• 通讯作者: et al.

OBSERVED BEHAVIOUR OF A TUNNEL IN SAND SUBJECTED TO SHEAR DEFORMATION IN A CENTRIFUGE

• DOI: 10.3208/sandf.50.281
• 发表时间: 2010-04
• 期刊: Soils and Foundations
• 影响因子: 3.7
• 作者: S. Shibayama;J. Izawa;A. Takahashi;J. Takemura;O. Kusakabe

圧縮破壊後の軟化を考慮した無筋コンクリート山岳トンネル覆工の数値解析手法に関する研究

考虑压缩破坏后软化的无筋混凝土山岭隧道衬砌数值分析方法研究

• 发表时间: 2009
• 期刊: 土木学会論文集C 65(4)
• 作者: 野城一栄;小島芳之;新井泰;岡野法之;竹村次朗
• 通讯作者: 竹村次朗

地質不良区間における新設山岳トンネル用地震対策工の適用性

地质不良地区新建山岭隧道地震对策的适用性

• 发表时间: 2009
• 期刊: 土木学会論文集C 65(4)
• 作者: 野城一栄;小島芳之;宮林英次;西藤潤;朝倉俊弘;竹村次朗
• 通讯作者: 竹村次朗