EXPERIMENTAL RESEARCH ON SEISMIC BEHAVIOR OF SUBWAY MULTI-SECTION TUNNEL IN TRANSVERSE DIRECTION

異高型複断面トンネルの横断方向地震時挙動に関する実験的検討

This research carries out model tests to investigate the behavior of multi-section cut-and-cover subway tunnels with the shear displacement of surrounding ground caused by seismic motion, which has not been fully investigated. A multi-section model tunnel as well as a general box type one is installed in a soil vessel and it is found that the sectional force corresponds to those obtained by tunnel design. Then, shear displacement is applied to the model ground and the test results show that the bending moment and shear force are comparatively large in the center wall, the tendency is different among the loading direction and the model tunnels are deformed according to the shear deformation of model ground.　地下鉄の異高型複断面区間の耐震性については，横断方向の耐震性の検討方法が示されていないことから，模型実験により地震時の地盤変位に伴う挙動について検討した．まず，単線断面と異高型複断面の模型トンネルをせん断土槽に設置し，所定の位置まで模型地盤を作製した．ここで初期状態の断面力を把握し，一般的な開削トンネルの設計で得られる断面力分布の傾向と概ね一致していることを把握した．つぎに，せん断土槽を変形させることにより，模型を含む地盤に強制変位を作用させた．その結果，異高型複断面では中壁に大きな曲げモーメントとせん断力が発生するとともに，載荷方向によって変形モードが異なることを，ひずみ分布とも参照の上で把握した．

• Record URL:
  https://doi.org/10.2208/jscejte.72.I_150
• Record URL:
  http://scholar.google.com/scholar_lookup?title=EXPERIMENTAL%20RESEARCH%20ON%20SEISMIC%20BEHAVIOR%20OF%20SUBWAY%20MULTI-SECTION%20TUNNEL%20IN%20TRANSVERSE%20DIRECTION&author=K.%20TSUNO&author=K.%20KAMADA&author=T.%20SANAGAWA&author=S.%20KONISHI&author=T.%20OTSUKA&author=T.%20IMAMURA&author=K.%20MAEKAWA&publication_year=2016
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/21856575
• Authors:
  • Tsuno, Kiwamu
  • KAMADA, Kazutaka
  • SANAGAWA, Taisuke
  • KONISHI, Shinji
  • OTSUKA, Tsutomu
  • IMAMURA, Toshiki
  • MAEKAWA, KOICHI
• Publication Date: 2016

Language

• English
• Japanese

Media Info

• Media Type: Web
• Pagination: pp I_150-I_158
• Serial:
  • Journal of Japan Society of Civil Engineers, Ser. F1 (Tunnel Engineering)
  • Volume: 72
  • Issue Number: 3
  • Publisher: Japan Society of Civil Engineers
  • ISSN: 2185-6575
  • Serial URL: https://www.jstage.jst.go.jp/browse/jscejte/-char/en

Subject/Index Terms

• TRT Terms: Cut and cover tunneling; Deformation; Dislocation (Geology); Earthquake resistant design; Subways; Tunnels
• Subject Areas: Bridges and other structures; Construction; Public Transportation; Railroads;

Filing Info

• Accession Number: 01633659
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: Apr 28 2017 4:51PM