文章摘要
赵剑强,赵倩,陈莹,杨文娟,胡博,刘珺,吴沛.计入地面附加衰减的声屏障插入损失估算方法*[J].,2018,37(4):582-586
计入地面附加衰减的声屏障插入损失估算方法*
A method for estimating the insertion loss of sound barriers including the ground additional attenuation
投稿时间:2018-01-10  修订日期:2018-06-26
中文摘要:
      基于理论推导和计算,给出了公路声屏障声学设计中,在考虑地面附加衰减情况下计算插入损失的方法。该方法综合考虑了有限长线声源无限长声屏障绕射声衰减量、有限长线声源地面衰减量及遮蔽角对插入损失的影响。通过与《声屏障声学设计和测量规范》(HJ/T90-2004)的计算结果的对比,验证了本文所给方法的精确性及可行性,并对规范所给地面衰减修正量进行了商榷。最后,给出了当预测点位于有限长路段中央法线上时,通过计算线声源地面衰减量得到计算插入损失所需参数值,再计算插入损失的简便方法。本研究为存在地面附加衰减情况下有限长声屏障插入损失计算提供了一个新的参考方法。
英文摘要:
      Based on acoustic theory, a new method for estimating the insertion loss of highway sound barriers was proposed in this study. In the method, the ground additional attenuation was considered, and the effects of the diffraction attenuation of a line sound source with a finite length propagated over a sound barrier with an infinite length, the ground attenuation of a sound source with a finite length and the shielding angle on the insertion loss were integrally included. Compared with Norm on Acoustical Design and Measurement of Noise Barriers (HJ/T90-2004), the method proposed in this study was accurate and feasible. Meanwhile, the correction values of ground attenuation recommended by Norm on Acoustical Design and Measurement of Noise Barriers (HJ/T90-2004) were discussed. Eventually, when the receiver located in the central normal of a road with a finite length, a simple and convenient method for estimating the insertion loss was given. The parameter required for calculating the insertion loss was determined by calculating ground attenuation of the line sound source. This research provided a new way for insertion loss calculation in acoustic design of finite length noise barriers when considering the ground attenuation of a sound source.
DOI:10.11684/j.issn.1000-310X.2018.04.018
中文关键词: 公路声屏障,插入损失,地面附加衰减,有限长线声源,绕射声衰减量
英文关键词: highway noise barrier  insertion loss  ground additional attenuation  finite line sound source  diffraction attenuation
基金项目:国家自然科学基金(51778057)
作者单位E-mail
赵剑强* 长安大学环境科学与工程学院 626710287@qq.com 
赵倩 长安大学环境科学与工程学院 646500407@qq.com 
陈莹 长安大学环境科学与工程学院 78389917@qq.com 
杨文娟 长安大学环境科学与工程学院 81858645@qq.com 
胡博 长安大学住房与城乡建设部给水排水重点实验室 35995688@qq.com 
刘珺 长安大学材料学院 181711210@qq.com 
吴沛 长安大学住房与城乡建设部给水排水重点实验室 88604867@qq.com 
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