APPLICABILITY ASSESSMENT OF SEISMIC COUNTERMEASURES FOR NEWLY CONSTRUCTED MOUNTAIN TUNNELS IN POOR GEOLOGICAL CONDITIONS

• YASHIRO Kazuhide

  鉄道総合技術研究所 構造物技術研究部 トンネル研究室

• KOJIMA Yoshiyuki

  鉄道総合技術研究所 構造物技術研究部 トンネル研究室

• MIYABAYASHI Hidetsugu

  鉄道建設・運輸施設整備支援機構 計画部

• SAITO Jun

  京都大学大学院 工学研究科社会基盤工学専攻

• ASAKURA Toshihiro

  京都大学大学院 工学研究科社会基盤工学専攻

• TAKEMURA Jiro

  東京工業大学大学院 理工学研究科土木工学専攻

Bibliographic Information

Other Title

• 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

Abstract

  Mountain tunnels are generally thought to be less susceptible to seismic damage. However, tunnels often suffer seismic damages such as cracks and compression failure depending on the magnitude of the earthquake and the distance from the epicenter. The authors proposed fiber reinforced concrete and a buffer material of styrene foam as the seismic countermeasures for the lining of newly constructed mountain tunnel in poor geological conditions and assessed their applicability by model tests and numerical analyses including the invert as existing countermeasure. It was found that the inverts can reduce tunnel deformation and bottom-heaving, and fiber reinforced concrete can improve the ductility of lining, disperse the cracks of the lining and reduce the crack widths, and the buffer material placed between the lining and shotcrete can suppress the tunnel deformation and cracks.

Journal

• Doboku Gakkai Ronbunshuu C

  Doboku Gakkai Ronbunshuu C 65 (4), 1062-1080, 2009

  Japan Society of Civil Engineers

Keywords

• mountain tunnel
• lining, seismic damage
• model test
• numerical analysis
• countermeasure

Details

• CRID: 1390282680230921344
• NII Article ID: 130004468371
• DOI: 10.2208/jscejc.65.1062
• ISSN: 1880604X
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed