摘要
基于高架道路与地面道路存在路面不连续、梁缝、伸缩装置等工况区别,导致按《环境影响评价技术导则声环境》中的公路噪声预测模型,不能更准确地预测非连续路面的交通噪声情况。采用声学软件建模,根据梁的实际长度将道路分段,预留出设计尺寸的缝隙来模拟梁缝,并在梁缝处设置点声源模拟伸缩缝噪声,再将预测结果与环境噪声进行叠加计算,得到最终噪声预测结果。研究结果表明:预测方法中用点声源模拟伸缩缝噪声进行交通噪声修正,其预测结果同实测结果相符,此方法提高了高架桥噪声预测的准确性及便捷性。
Due to differences between working conditions of urban viaduct and ground road,such as discontinuous pavement,gaps of beams,expansion joints,it is inaccurate to predict traffic noise on discontinuous roads by the predicting model given in"Technical Guidelines for Noise Impact Assessment".In this situation,an acoustic software is adopted to model,which the road is divided into sections according to the actual length of the beam,gap of the design dimension is reserved to simulate the beam joint and a point sound source at the beam joint is set to simulate the expansion joint noise.Then the noise calculating results and the environmental noise are superimposed to obtain the final predicting results.The result shows that in the predicting method,the point sound source is used to simulate the noise of expansion joint for traffic noise correction,and the predicting results are consistent with the measured results.This method improves the accuracy and convenience of the noise prediction of viaduct.
作者
单华刚
林道锦
吴明龙
邱廷琦
王伟国
陈劲涛
SHAN Huagang;LIN Daojin;WU Minglong;QIU Tingqi;WANG Weiguo;CHEN Jintao(Shaoxing Traffic Construction Co.,Ltd.,Shaoxing 312000;CCCC Highway Consultants Co.,Ltd.,Beingjing 100088;Chengdu Xinzhu Road&Bridge Machinery Co.,Ltd.,Chengdu 611430)
出处
《公路交通技术》
2021年第1期131-137,共7页
Technology of Highway and Transport
基金
浙江省交通运输厅科研计划项目(2017010)。
关键词
高架公路
预测模型
交通噪声
梁缝
伸缩装置
viaduct road
prediction model
traffic noise
beam joint
expansion device
