Windresistant design (1)

[57] Uncertainty of Typhoon Pressure Field Properties for Typhoon Simulation

○Keisuke Miura¹, Masahiro Matsui², Genichi Maeshiro¹ (1.Tokyo Electric Power Services Co.,Ltd., 2.Tokyo Polytechnic University)

Keywords:Typhoon Model, Monte-Carlo Simulation, Generalized Extreme Value Distribution, Epistemic Uncertainty

In this study, a method to evaluate reliability of train cars against cross winds considering uncertainty in estimated aerodynamic force is proposed. First, estimation accuracy of aerodynamic force acting on train car is clarified by using experimental data. As a result, it was found that spatial average wind speed and 3 seconds time average wind speed were the appropriate methods to estimate the peak values of the aerodynamic forces which act on the train car. Second, safety index to evaluate safety of train car against cross winds is found by using a method of reliability-based design. As a result, it was found that the safety index varied sensitively depending on the wind resistant performances of the train cars.