Comparative Research on Vibration Characteristics of Cast-In-Place Steel-Spring-Floating Slab Track under Different Subway Line Conditions

Purpose: Steel-spring-floating slab tracks are widely used in subway lines. It is necessary to analyze and study the vibration damping transmission characteristics of steel-spring-floating track various frequency bands under action train loads. Method: A ordinary monolithic tunnel sites with similar line conditions on straight curved segments were selected. The signals rail, bed, walls collected analysis results between compared. Results: dynamic responses rail four working relatively close, acceleration bed significantly larger than that track. response generated segment greater, each band will generate more peak points, high-frequency be severe. Conclusions: can reduce wall; bottom constraint less,