LOS声屏障降噪效果评价

关博文; 李硕; 姜艺; 赵光远; 陈拴发

doi:10.19818/j.cnki.1671-1637.2015.04.004

LOS声屏障降噪效果评价

doi: 10.19818/j.cnki.1671-1637.2015.04.004

关博文^{1, 2,},
李硕³,
姜艺²,
赵光远²,
陈拴发¹

1.
长安大学交通铺面材料教育部工程研究中心, 陕西西安 710064
2.
普渡大学建筑工程管理系, 印第安纳西拉法叶 47907
3.
印第安纳州交通厅研究与发展部, 印第安纳西拉法叶 47907

基金项目:

Indiana Department of Transportation Project SPR-3555

国家自然科学基金项目 51308062

中国博士后科学基金项目 2013M540726

中央高校基本科研业务费专项资金项目 2014G1311084

详细信息

作者简介:
关博文(1985-), 男, 吉林省吉林市人, 长安大学讲师, 工学博士, 从事道路工程研究

中图分类号: U418.7
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- 被引次数: 0
出版历程
- 收稿日期: 2015-03-15
- 刊出日期: 2015-04-25

Noise reduction effect evaluation of LOS sound barriers

1.
Engineering Research Center of Transportation Materials of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China
2.
Department of Building Construction Management, Purdue University, West Lafayette 47907, Indiana, USA
3.
Division of Research and Development, Indiana Department of Transportation, West Lafayette 47907, Indiana, USA

More Information

Author Bio:
GUAN Bo-wen(1985-), male, lecturer, PhD, +86-29-82334849, guanbowen2001@163.com

摘要

摘要: 为了评价LOS声屏障在噪声水平超标较小与住户较少地区的应用效果, 对美国印第安纳州I-465高速公路新型LOS声屏障试验段进行噪声测试与TNM分析, 研究了路面类型、车辆速度、交通量、降噪系数、声屏障高度与声屏障延长对LOS声屏障降噪水平的影响, 评价了LOS声屏障应用效果, 提出了关键设计参数。研究结果表明: LOS声屏障适用于噪音水平超标较小与住户较少的地区; 路面类型对降噪效果影响较大, 将水泥混凝土路面更换为密级配沥青混凝土路面与开级配沥青混凝土路面可以明显提高降噪幅度和降噪有效率; 采用限速方法降低噪音并不明显, 不推荐采用限速的方法提高声屏障降噪效果; LOS声屏障设计时, 设计降噪幅度宜大于6.7dBA, 最低高度应大于路面行驶的大型车辆高度, 最大高度不超过6.6m, 最佳高度由设计年限内降噪效果模拟分析确定。
- 道路工程 /
- LOS声屏障 /
- 吸声材料 /
- 交通噪声 /
- 预测模型
Abstract: In order to evaluate the application effect of line of sight(LOS)sound barrier in the areas with less excessive noise level and fewer households, the noise monitoring and traffic noise model(TNM)analysis at the highway I-465 with LOS sound barrier in Indiana, USA have been done.The influences of pavement type, vehicle speed, traffic volume, noise reduction coefficient, height and extended length of sound barrier on noise reduction level of LOS sound barrier were analyzed, the application effect of LOS sound barrier was evaluated, and the key design parameters were proposed.Analysis result shows that LOS sound barrier can be applied in the areas with less excessive noise level and fewer households.The influence of pavement type on noise reduction is significant.If cement concrete pavement(CCP)is replaced by dense-graded asphalt concrete pavement(DGACP)or open-graded asphalt concrete pavement(OGACP), the range and effective rate of noise reduction can be improved significantly.It is not effective toreduce traffic noise by lowering speed limits, therefore, it is not recommended.For designing LOS sound barrier, the design noise reduction range should be above 6.7dBA, the minimum barrier height should be tall enough to block the view of large vehicle and the maximum barrier height is 6.6m, the optimum height of LOS sound barrier in design year should be determined by traffic noise model analysis.
- road engineering /
- LOS sound barrier /
- sound-absorbing material /
- traffic noise /
- prediction model

HTML全文

图 1 三种LOS声屏障与传统声屏障

Figure 1. Three kinds of LOS sound barriers and traditional sound barrier

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图 2 监测点与声屏障位置

Figure 2. Measuring points and sound barrier positions

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图 3 模型误差分布

Figure 3. Error distribution of model

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图 4 等音线

Figure 4. Equivalent sound contours

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图 5 车辆速度对噪音的影响

Figure 5. Influence of vehicle speed on noise

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图 6 道路运营时间对噪音的影响

Figure 6. Influence of road service time on noise

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图 7 降噪系数对噪音的影响

Figure 7. Influence of NRC on noise

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图 8 声屏障高度对噪音的影响

Figure 8. Influence of sound barrier height on noise

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图 9 声屏障高度对降噪幅度的影响

Figure 9. Influence of sound barrier height on noise reduction range

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图 10 声屏障边缘第一排监测点降噪幅度

Figure 10. Noise reduction ranges at the first row measuring points of sound barrier

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图 11 延长长度对噪音的影响

Figure 11. Influence of extended length on noise

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图 12 采用LOS声屏障后各测点的降噪幅度分布

Figure 12. Noise reduction range distribution at measuring points with LOS sound barrier

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图 13 LOS声屏障对大型车辆遮挡效果

Figure 13. Shield effects of LOS sound barriers for large vehicles

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图 14 居民对降噪效果的评价

Figure 14. Residents evaluation on noise reduction effect

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表 1 交通量与车辆速度（单车道）

Table 1. Traffic volumes and vehicle speeds(one lane)

表 2 声屏障参数

Table 2. Parameters of sound barriers

表 3 误差分析结果

Table 3. Error analysis result

表 4 不同路面类型的降噪幅度

Table 4. Noise reduction ranges of different pavement types

表 5 设计年限内LOS声屏障的降噪效果

Table 5. Noise reduction effect of LOS sound barrier in design year

表 6 路面类型对LOS声屏障降噪效果的影响

Table 6. Influence of pavement types on noise reduction effect of LOS sound barrier

表 7 车速控制对LOS声屏障降噪效果的影响

Table 7. Influence of speed control on noise reduction effect of LOS sound barrier

表 8 声屏障高度对LOS声屏障降噪效果的影响

Table 8. Influence of height on noise reduction effect of LOS sound barrier

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