철도궤도용 복합 콘크리트 슬라브 구조의 감쇠 특성 연구

초록

The purpose of this study was to estimate damping performance of the complex polymer concrete slab structure to be used as sleepers for railway. The complex polymer concretes are mixture of the cement concrete and polymer concrete. The static and dynamic properties were measured by using beam-transfer function method to identify the adhesive strength between the cement and polymer concretes. An analysis model using the spectral element method was imposed to predict the vibrational behavior of the complex concrete when the concrete was applied as a sleeper in slab structure of railway. The vibration response of the railway by impact force was compared with different concrete properties. Finally, the radiated sound pressure level from the rail was predicted to identify damping characteristics of the complex concrete.