华东交通大学学报2017，Vol.34Issue(3)：7-13,7.
交通荷载作用下钢箱梁振动声场分布研究
Research on Acoustic Field Distribution of Steel Box Girder under the Traffic Load
程海根 1陈海华1
作者信息
- 1. 华东交通大学土木建筑学院,江西 南昌 330013
- 折叠
摘要
Abstract
Low-frequency vibration radiation noise of bridges, caused by traffic load, has become a serious prob-lem threatening residents' life and heath. It is of great significance to explore effects of the noise distribution of box girder for evaluating and reducing environmental noise pollution. Based on the theory of axle coupled vibra-tion and sound transmission, this paper established the FEM and BEM solution system of vibration radiation. Taking a box girder of 32m constant depth as the solid model, it conducted the numerical simulation of the tran-sient sound field characteristics for the steel box girder vibration under traffic loads. Results showed that the vi-bration radiation noise of the roof is bigger than that of other structures of the girder. With the increase of the distance from the girder, the sound pressure becomes smaller, and the amplitude of the noise attenuation will al-so be smaller. It finds out that the use of sound absorption material in the box girder may not help the noise re-duction.关键词
钢箱梁桥/振动响应/瞬态边界元/声场分布Key words
bridge of steel box girder/vibration response/acoustic transient boundary/acoustic field distribu-tion分类
交通工程引用本文复制引用
程海根,陈海华..交通荷载作用下钢箱梁振动声场分布研究[J].华东交通大学学报,2017,34(3):7-13,7.
