耐風・風工学 (2)

[I-287] Study on Stability of Vehicles Crossing the Bridges of Tokyo Wan Aqua-line Expressway under Strong Winds by CFD-based Numerical Simulation

*武藤 秀人¹、金 恵英¹、藤野 陽三¹、シリンゴリンゴ ディオン¹、勝地 弘¹、山田 均¹ (1. 横浜国立大学大学院)

Keywords:cross-wind, critical wind speed, deck-vehicle model, CFD, vehicle stability

Study on Stability of Vehicles Crossing the Bridges of Tokyo Wan Aqua-line Expressway under Strong Winds by CFD-based Numerical Simulation

This paper describes a study on vehicle stability when crossing the bridges of Tokyo Wan Aqua-line Expressway under strong cross-wind. CFD was carried out to obtain the aerodynamic coefficients of vehicle with various girder height, lane, and vehicle height. Wind forces on the vehicle are computed based on aerodynamics coefficients for various speed. Two vehicle stability conditions were defined: critical overturning and yawing. Wind speed limit associated with each critical condition is determined.