高架桥轨道减振措施的降噪效果量化分析

Quantitative Analysis of Noise Reduction Effect of Elevated Vibration Damping Track

总结地铁高架敷设方式及噪声控制技术发展历程,对桥梁噪声进行合理的简化分析与拆解,调研部分轨道减振措施对桥梁二次结构噪声的抑制效果,在此基础上量化分析轨道减振对综合降噪效果的规律,与以往工程中的定性做法相比,实用且有一定的创新和突破,可为今后其他实际工程高架桥综合噪声控制提供借鉴。

This paper summarizes the subway viaduct and its noise controlling technology development history; dismantles and simplifies the secondary structural noise of viaducts reasonably; and surveys noise reduction effects of elevated vibration damping tracks. On this basis, a quantitative analysis of the contribution of a vibration damping track on the comprehensive effect of noise reduction is conducted. Compared to the existing qualitative practice, the new method is practical, includes certain innovations and breakthroughs, and can provide guidance for comprehensive noise control for viaducts in the future.