排水沥青路面空隙特征参数与吸声系数关系研究  

Research on the Relationship between Void Characteristic Parameters and Sound Absorption Coefficient of Drainage Asphalt Pavement

作　　者：顾盛[1] 王鹏飞[1] 韦定兵 解建光 李骅 GU Sheng;WANG Peng-fei;WEI Ding-bing;XIE Jian-guang;LI Hua(Kunshan Construction Engineering Quality Testing Center,Suzhou 215337,China;School of Civil Engineering and Architecture,Jiangsu Open University,Nanjing 210019,China;College of Civil Aviation,Nanjing University of Aeronautics&Astronautics,Nanjing 21l106,China;Shanghai Municipal Engineering Cost Consultation Co.Ltd.,Shanghai 200092,China)

机构地区：[1]昆山市建设工程质量检测中心,苏州市215337 [2]江苏开放大学建筑工程学院,南京市210019 [3]南京航空航天大学民航学院,南京市211106 [4]上海市政工程造价咨询有限公司,上海市200092

出　　处：《公路》2024年第11期1-7,共7页Highway

基　　金：国家科技支撑计划项目,项目编号2015BAL02B02。

摘　　要：为研究排水沥青路面空隙特征对其吸声性能的影响,以单双层排水沥青车辙板试件为研究对象,采用传递函数法测定其吸声系数,通过CT扫描以及软件三维重构等技术手段获取了空隙特征参数,经相关性分析提出了基于空隙特征参数预测吸声系数的关系模型。研究表明:排水沥青试件吸声频带宽度随空隙率增大而逐渐变宽,单层试件存在一个吸收峰,双层试件存在两个吸收峰,峰值均随空隙率的增加而增大且位置逐渐向高频移动;空隙率接近时,双层排水沥青试件吸声能力强于单层排水试件;计算空隙率、重构空隙率、平均体积、平均表面积以及空隙总体积对吸声性能具有较大影响,其中计算空隙率影响最大。In order to study the influence of void characteristics on the sound absorption performance of drainage asphalt pavement,the single and double layer drainage asphalt track board specimens are taken as the research object in the paper,the transfer function method is used to measure their sound absorption coefficient,void parameters are obtained through CT scanning and 3D reconstruction technology,and a relationship model is proposed based on void parameters to predict the sound absorption coefficient through correlation analysis.The results shows that:the sound absorption frequency band width of drainage asphalt specimens gradually widens with the increase of void content;there is one absorption peak in single-layer specimens and two absorption peaks in double-layer specimens,both values of which increase with the increase of void content and gradually move toward high frequencies;when the void content of single-layer specimen and double-layer specimen are close to equal,the sound absorption ability of the double-layer specimen is stronger than that of the single-layer specimen;and the calculation void content,reconstruction void content,mean volume,mean surface area,and total void volume have a significant impact on sound absorption performance,with the calculation void content having the greatest impact.

关 键 词：道路工程 排水沥青路面 空隙特征 图像处理 吸声系数 预测模型 

分 类 号：U416.217[交通运输工程—道路与铁道工程] TU528.42[建筑科学—建筑技术科学]