铁道标准设计Issue(1)：48-51,4.DOI:10.13238/j.issn.1004-2954.2016.01.010
轨道交通陶粒混凝土吸声板降噪效果的测试分析
Test and Analysis of Noise Reduction Effect of Ceramsite Concrete Sound-absorbing Board
摘要
Abstract
In recent years, creating low noise traveling environment and establishing vibration and noise reduction environment friendly subway environment has become the trend of the construction of rail transit in China. This paper analyzes the noise reduction effect of a new sound-absorbing structure-HCM sound-absorbing board made of ceramsite concrete. Tests were carried out in Track Vibration Damping and Vibration Control Laboratory of Beijing Jiaotong University. The sound-absorbing boards were laid between the rails of the track and measuring points were arranged in the road bed and the wall of the tunnel. The boards were tested under simulated dry, humid, rainy and wet dry conditions. Analysis results show that: noise reduction by 4 ~5 dBA can be obtained at different measuring points under different conditions;sound-absorbing board has a wide noise reduction spectrum indicated by analysis. At tunnel wall measuring points, noise reduction is more effective when frequency is over 250 Hz, and at road bed measuring points, the same is true when frequency is over 500 Hz.关键词
轨道交通/陶粒混凝土/吸声板/降噪测试/HCMKey words
Rail transit/Ceramsite concrete/Sound-absorbing board/Noise reduction test/HCM分类
交通工程引用本文复制引用
朱万旭,张庆,李丽,刘卫丰,周红梅,刘玮..轨道交通陶粒混凝土吸声板降噪效果的测试分析[J].铁道标准设计,2016,(1):48-51,4.基金项目
广西壮族自治区科研计划课题(桂科攻1598001) （桂科攻1598001）
广西矿冶与环境科学实验中心项目(KH2013YB023) （KH2013YB023）
