基于实测数据的典型公路桥梁噪声对比  

Comparison of typical highway bridges noise based on measured data

作　　者：徐海博 李浩 司义德 李蕾 XU Haibo;LI Hao;SI Yide;LI Lei(Qingdao Municipal Engineering Design and Research Institute Co.,Ltd,Qingdao 266061,Shandong,China;Qingdao Branch,Institute of Acoustics,Chinese Academy of Sciences,Qingdao 266114,Shandong,China)

机构地区：[1]青岛市市政工程设计研究院有限责任公司,山东青岛266061 [2]中国科学院声学研究所北海研究站,山东青岛266114

出　　处：《声学技术》2025年第1期122-127,共6页Technical Acoustics

摘　　要：为研究公路典型桥梁的噪声特性,基于混凝土箱梁匝道桥、钢箱梁匝道桥、连续钢混组合梁、简支混凝土小箱梁和简支钢混组合梁的实测数据,对噪声频谱特性、空间分布规律和桥梁结构辐射噪声进行分析和讨论。研究结果表明:夜间公路桥梁环境噪声均超过噪声限值,差值最大为9 dB(A);桥梁噪声A声级随着水平距离的增大逐渐减小,声屏障、市政绿化树和辅路交通噪声等会影响频谱特性;在20~1000 Hz的测量频带内,钢制桥梁结构辐射噪声的显著频率范围和固体声能百分比均远大于混凝土材质桥梁。研究结果可为基于声学性能的桥梁结构选型提供依据。In order to study the noise of typical highway bridges,the spectral characteristics and spatial distribution of noise,as well as the structure-borne noise,are analyzed and discussed based on field-tested noise data of concrete boxgirder ramp bridges,steel box-girder ramp bridges,continuous steel-concrete composite girder,simply supported concrete small box-girders,and simply supported steel-concrete composite girder.Results show that the environmental noise of highway bridges at night exceeds the noise limit,with a maximum difference of 9 dB(A);A-weighted sound pressure levels(SPLs)of highway bridge noise gradually decreases with the increase of horizontal distances,and the spectral characteristics are affected by noise barriers,municipal green trees,and the traffic noise on auxiliary roads.The significant frequency band and the percentage of solid-sound energy of the radiation noise of steel bridges structure are much greater than that of concrete bridges in the measurement frequency band of 20-1000 Hz.The research results can provide reference for selecting bridge structures based on acoustic performance.

关 键 词：公路桥梁噪声 混凝土梁 钢-混组合梁 

分 类 号：U448[建筑科学—桥梁与隧道工程] X839.1[交通运输工程—道路与铁道工程] TB52[环境科学与工程—环境工程]