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.

弱胶结或无粘性土壤中的隧道容易受到地震引起的地面运动或位移的损害。为了研究此类隧道的复杂地震土壤结构相互作用，已经开发了各种模型测试技术，例如活动型剪切盒和故障模拟器。在这项研究中考虑了三个特定条件，即1）浅隧道，其浅色隧道遭受剪切变形的地面变形，2）处于弱地面的隧道，受到巨大的土压力，3）在受到断层位移的冲积外，隧道。根据模型测试结果和数值模拟，讨论了这些隧道的典型变形和故障机制，并讨论了针对它们的有效对策。

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

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

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.

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

离心机故障模拟器的研制及故障差分位移下埋地管道的初步研究

• 作者: J.Takemura;Y.Ishii;O.Kusakabe
• 通讯作者: O.Kusakabe

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