| Summary: | 碩士 === 國立成功大學 === 土木工程學系碩博士班 === 92 === Taipei M.R.T.S Xinzhuang-Luzhou line plans to pass through vibration sensitive areas. To solve vibration problem in tunnels, the Taipei M.R.T.S will use floating slab track first time in Taiwan. The floating slab track dynamic equilibrium equations are established in this research, to obtain responses of the track model by 4th Runge-Kutta method.
From the result, we found that the floating slab track displacements increase significantly at higher vehicle speed. Also, wheel/track resonance effect was found under certain train velocities. It shows that the floating slab track is disadvantageous in high speed range. Increase the slab mass and decrease the supporting pad stiffness will cause higher track displacement. In addition, increasing slab mass is effective in reducing the resonant speed, and enlarge the wheel/track contact force.
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