STUDY ON EFFECTIVE NOISE BARRIER AT SENIOR HIGH SCHOOL (SMAN 02) CIBINONG

Aulia Ramandha, Wisnu Eka Yulyanto, S. Madonna
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引用次数: 1

Abstract

Aim: The aim of this study is to design noise barrier shapes and to investigate its effectiveness in reducing traffic noise at one public school in Indonesia. Methodology and Results: Two types of barriers were designed on a laboratory scale using plywood materials and the noise level was measured using Noise Analyzer Briiel and Kjaer Type 2250. Noise reduction was analyzed by using the Insertion Loss method based on the difference of the noise level before and after implementing the barrier. The results show that the barrier Type II with a length of 200 cm, a receiver height of 30 cm, and a curved shape of 45° angle (Type L) is more effective in reducing the noise than the other variation of barrier shape and length. Barrier Type L (Type II) can reduce the noise at high frequency between 1–8 kHz with an Insertion Loss value of 6.9–27.9 dB. Conclusion, significance and impact study: The noise barrier Type II, with specifications of 20 m length, 3 m height, and barrier material of reinforced concrete, is recommended to be used at the high school to reduce the road traffic noise.
高中有效噪声屏障的研究(sman 02)
目的:本研究的目的是设计隔音屏障的形状,并调查其在减少印度尼西亚一所公立学校交通噪音方面的有效性。方法和结果:采用胶合板材料在实验室规模上设计了两种类型的屏障,并使用Briiel和Kjaer型2250噪声分析仪测量了噪声水平。利用插入损耗法,根据设置屏障前后噪声级的差异,分析了屏障的降噪效果。结果表明,长度为200 cm、接收高度为30 cm、弯曲形状为45°角(L型)的II型屏障比其他形状和长度变化的屏障更有效地降低了噪声。L型屏障(II型)可以降低1-8 kHz之间的高频噪声,插入损耗值为6.9-27.9 dB。结论、意义及影响研究:推荐在某高中采用长度为20m,高度为3m,阻隔材料为钢筋混凝土的II型隔音屏障来降低道路交通噪声。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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