权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study on the methods of environmental noise monitoring

环境噪声监测方法研究

基本信息

批准号：
13450235
负责人：
TACHIBANA Hideki
金额：
$ 7.23万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450235/
关键词：
Environmental noise Road Traffic Noise Equivalent continuous sound pressure level Noise assessment

项目摘要

In the "Environmental Quality Standards for Noise" revised in 1998, the basic concept of noise impact assessment was changed and equivalent continuous A-weighted sound pressure level which is widely used in the world was adopted as the noise index. Besides this standard, "Environmental Impact Assessment Law" was issued and enforced in 1999 and environmental impact assessment has become mandatory for large-scale development projects. Based on these legal movements, this study was started for the purpose of monitoring or predicting the situation of environmental noise exactly using equivalent continuous A-weighted sound pressure level and indicating the results of the examination objectively. The contents of this study are as follows.(1) Study on the prediction and assessment for road traffic noiseAs a basic study for the improvement of the "ASJ RTN-Model 1998", which is the standard model for the prediction of road traffic noise in Japan, field measurements were performed to examine the effect of heavy vehicles and the noise distribution in vertical direction in urban areas. Besides, sound attenuation effect by various types of noise barriers and embankments and noise prediction around semi-underground roads and intersections with much complicated conditions were analyzed by the methods of numerical analysis and scale model experiments.(2) Study on the measurement methods of noise propagationIn sound propagation measurement outdoors, the effect of the meteorological conditions on sound propagation characteristics cannot be neglected. In order to deal with this problem, the application of such signal processing technique as Time-Stretched-Pulse method was investigated theoretically and experimentally.(3)Study on the prediction of construction noisesRecently, the noise generated by construction works has become a subject of environmental assessment and the prediction method has to be developed. In this study, the basic examination was performed on this topic.

1998年修订的《声环境质量标准》改变了噪声影响评价的基本概念，采用国际上广泛采用的等效连续A计权声压级作为噪声指标。除此之外，《环境影响评价法》于1999年颁布实施，环境影响评价已成为大型开发项目的强制性要求。本研究正是基于这些法律的动向而展开的，其目的是利用等效连续A计权声压级准确地监测或预测环境噪声状况，客观地反映检测结果。本研究的内容如下。(1)道路交通噪声预测与评价的研究作为日本道路交通噪声预测的标准模型“ASJRTN-Model 1998”的改进基础研究，进行了现场测量，以检查重型车辆的影响和城市地区垂直方向上的噪声分布。同时，采用数值分析和缩尺模型试验相结合的方法，分析了各种声屏障和声屏障的消声效果，并对复杂条件下的半地下道路和交叉口进行了噪声预测。(2)噪声传播测量方法的研究在室外声传播测量中，气象条件对声传播特性的影响不容忽视。为了解决这一问题，本文从理论和实验两方面研究了时间展宽脉冲法等信号处理技术的应用。（3）建筑噪音预测的研究近年来，建筑工程所产生的噪音已成为环境评估的课题，而预测方法亦有待发展。在这项研究中，对这一主题进行了基本检查。