LATERAL RESISTANCE CHARACTERISTICS OF BALLASTED TRACKS SUBJECTED TO ANGULAR FOLDING AT STRUCTURE BOUNDARIES

構造物境界部における角折れ時のバラスト軌道の道床横抵抗力特性

When earthquakes induce local displacements on ballasted tracks at structure boundaries, the lateral resistance decreases and the lateral stability becomes lower. However it is difficult to examine the lateral resistance characteristics under various conditions occurring in the field, so that the knowledge related to this issue have not been accumulated. Therefore, angular folding which is one of the phenomena causing local displacements is focused in this study. After an apparatus which could generate angular folding was newly developed, a series of model tests were conducted. From the model tests, effects of folding angles, the repetition numbers, and the opening or closing status on the lateral resistance were investigated. In addition, differences between lateral resistances from single-sleeper pullout tests and those from track-panel pullout tests were also studied.　鉄道構造物境界におけるバラスト軌道では，地震時に局所的変位が生じると道床横抵抗力が低下し，軌道の水平安定性が損なわれる．しかし，現場で生じる様々な条件下の道床横抵抗力特性を調べることは難しく，いままでに蓄積された資料は乏しい．そこで本研究では局所的変位をもたらすものとして，角折れに着目し，室内で角折れが発生できる装置を製作して模型試験を実施した．模型試験では道床横抵抗力に折れ角の大きさや回数，開閉状態が及ぼす影響，そして1本引き載荷試験と軌きょう引き載荷試験における違いなどについて調べた．

• Record URL:
  https://doi.org/10.2208/jscejpe.72.21
• Summary URL:
  http://scholar.google.com/scholar_lookup?title=LATERAL+RESISTANCE+CHARACTERISTICS+OF+BALLASTED+TRACKS+SUBJECTED+TO+ANGULAR+FOLDING+AT+STRUCTURE+BOUNDARIES&author=S.+YAMAMOTO&author=T.+Nakamura&author=Y.+MOMOYA&author=K.+Hayano&publication_year=2016
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/21856559
• Authors:
  • YAMAMOTO, Saori
  • Nakamura, Takahisa
  • MOMOYA, Yoshitsugu
  • Hayano, Kimitoshi
• Publication Date: 2016

Language

• English
• Japanese

Media Info

• Media Type: Web
• Pagination: pp 21-30
• Serial:
  • Journal of Japan Society of Civil Engineers, Ser. E1 (Pavement Engineering)
  • Volume: 72
  • Issue Number: 1
  • Publisher: Japan Society of Civil Engineers
  • ISSN: 2185-6559
  • Serial URL: https://www.jstage.jst.go.jp/browse/jscejpe/-char/en

Subject/Index Terms

• TRT Terms: Ballast (Railroads); Dislocation (Geology); Earthquakes; Pull out test; Railroad tracks; Resistance (Mechanics)
• Subject Areas: Construction; Railroads;

Filing Info

• Accession Number: 01600026
• Record Type: Publication
• Source Agency: Japan Science and Technology Agency (JST)
• Files: TRIS, JSTAGE
• Created Date: May 24 2016 5:11PM