CONSIDERATION OF OVERTURNING RISK FOR RUNNING VEHICLES DUE TO CROSSWINDS

DOI Web Site 1 Citations 3 References
  • TACHIBANA Takashi
    中日本高速道路株式会社（研究当時京都大学大学院）
  • SHIRATO Hiromichi
    京都大学大学院 工学研究科社会基盤工学専攻
  • OKAMOTO Mitsuki
    西日本旅客鉄道株式会社（研究当時京都大学）
  • WADA Kohei
    京都大学大学院 工学研究科社会基盤工学専攻
  • ZHANG Dongming
    京都大学大学院 工学研究科社会基盤工学専攻
  • SUMI Kazuo
    本州四国連絡高速道路株式会社 東京事務所 技術調整課
  • YAGI Tomomi
    京都大学大学院 工学研究科社会基盤工学専攻
  • HATTORI Hiroshi
    株式会社ニチゾウテック 技術開発部
  • KOGA Mitsuhiko
    一般財団法人道路交通情報通信システムセンター〔VICSセンター〕

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Other Title
  • 横風作用時における走行車両の横転安全性の考察

Description

 There are some problems in the vehicles overturning due to strong crosswinds. For road managers who decide a traffic regulation, designing an algorithm to give a warning signal in advance is an important issue. The purpose of this research is to obtain aerodynamic knowledge and wind condition when running vehicles overturn. In this paper, the following items are discussed: (1) To derive two components of static aerodynamic force: aerodynamic force coefficients in a boundary layer and gust response factor taking into account a probability of up-crossing the overturning wind speed level. (2) To obtain an on-site wind condition when overturning occurs by solving the equation of angular motion. (3) To examine the running vehicles aerodynamic characteristics caused by sudden strong crosswind using wind tunnel tests and onsite observation tests. As a result, the aerodynamic force acting on running vehicles can be estimated by static force. Finally, a risk curve to indicate critical on-site average wind speed and wind direction is to be obtained. It is also investigated whether this method is applicable to strong wind area.

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