第５部門②

[2E06-10-03] Closed Form Solution of Continuous Beam with Multi Supports under Moving Loads for Simple Calculation of Continuous Railway Bridge Dynamic Responses

*Manabu Nakada², Kodai Matsuoka¹ (1. Railway Technical Research Institute, 2. JR Soken Engineering)

Keywords:Continuous beam, Closed form solution, Moving load

To establish a simple calculation method for railway continuous bridges with a small calculation effort. A closed-form solution of a multi supported beam under a moving load is derived and implemented. The accuracy of the theoretical solution-based method is confirmed by comparison with the results of finite element method and numerical integration method. Furthermore, as a result of comparing the calculation time of the method based on the closed form solution and the numerical integration, the closed form solution can calculate the dynamic response of continuous bridge 10 times faster than the numerical integration.