文档介绍：西南交通大学硕士研究生学位论文 第1页
摘要
随着道路交通建设的发展,交通噪声的污染越来越严重。声屏障作为一种降低交通噪声有效而经济的方法,将会在一定程度上得到发展。如何有效地利用好声屏障这一降噪措施,使其发挥出最大的技术经济效果,对于改善人们的生活质量有着重要的意义。
本文对声屏障的形式、构造进行了系统的归纳,并绘制了各种声屏障的构造图:对声屏障的声学设计原理、设计原则和内容作了论述;对声屏障的降噪目标值、修建位置、高度、长度作了系统的分析和计算。
通过实验室实验测量了常用隔声材料的隔声量及常用吸声材料的吸声量。实验采用的是丹麦BK公司建筑声学分析仪BK4417,根据所测得的数据对各种声屏障材料的降噪量进行分析和归纳,为声屏障设计人员进行声屏障设计提供了理论依据。
运用模糊数学理论对声屏障设计中材料及构造形式的选择进行综合评价。评价中筛选了影响声屏障设计的12个因子,构造了声屏障评价的指标体系,并以丹拉高速公路附近的敏感点黄銮庄学校声屏障设计为例,分析了声屏障设计如何实施,并用模糊综合评价法对其进行了评价。评价结果表明, 黄銮庄学校声屏障设计在经济指标、物理指标、社会效益等方面达到较优的水平。该设计中结构形式和吸声材料搭配非常合理,与实际的降嗓效果相一致。
关键词:道路交通;噪声污染;声屏障;声屏障评价
西南交通大学硕士研究生学位论文 第1I页
Abstract
With the development of road construction,the traffic noise pollution es very important problem。Sound barrier,an effective paratively inexpensive measure of controlling noise。will be developed to some will do much benefit to the living quality of the residents along the road if we can take good advantage of its technical property.
According to form、structure and stuff,the thesis induces road sound barrier systematically,describes their sound properties and mechanical properties,draws
all kinds of structural graphic of sound weaken noise aim
building position,height and length of sound barrier have been analysed and. calculated systematically.
The thesis has studied sound insulation material and materials’S noise reduction throngh laboratory structuraI
acoustic analysis instrument which is made by BK Dcmnark has been used in this analysis of different materials’noise reduction of sound barrier have been done on the basis of the can be referred to by the sound barrierdesigners.
Material selection and structural form selection in sound barrier prehensive evaluation with fuzzy twelve factor of effect on sound barrier design in assessment model,and settlement of Index System on sound barrier Huangluanzuang School sound barrier design as
an exemple,briefly