| 魏玥,阮学云,高艳,李达,王相.廊道悬浮声屏障噪声预测及控制方案研究[J].安徽建筑大学学报,2022,30(): |
| 廊道悬浮声屏障噪声预测及控制方案研究 |
| Study on Noise Prediction and Control Scheme of Corridor Suspension Noise Barrier |
| 投稿时间：2021-07-16 修订日期：2021-09-25 |
| DOI： |
| 中文关键词: 廊道噪声 悬浮声屏障 低噪声托辊 下挑檐 Cadna/A 噪声控制方案 |
| 英文关键词: corridor noise suspension noise barrier low noise roller lower eaves Cadna/A noise control scheme |
| 基金项目: |
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| 摘要点击次数: 1539 |
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| 中文摘要: |
| 廊道作为燃煤输送的主要通道，其噪声对附近居民影响较大。布置声屏障是目前主要的治理方案，但工程噪声预测软件不能准确模拟计算廊道带下方挑檐悬浮声屏障的噪声，从而无法综合评估各常用类型声屏障在廊道噪声控制方案的治理效果。以Cadna/A预测软件几何建模为基础，利用几何位置关系将声屏障下挑檐绕射转化成可计算的上挑檐绕射，利用Cadna/A进行等效计算，并通过理论计算验证该方法的可行性。应用该方法，对某电厂廊道噪声进行噪声预测建模，对上下挑檐声屏障、更换低噪声托辊、低噪声托辊配合上下挑檐声屏障三种噪声控制方案进行模拟计算，结果表明：三种方案均可在不同工程量情况下达到声环境质量标准2类标准，进一步通过经济性分析，更换低噪声托辊性价比最佳。采用的噪声预测建模策略可实现各类悬浮声屏障的噪声预测，各控制方案对比分析也可为同类型廊道噪声治理提供科学依据，具有较大的应用价值。 |
| 英文摘要: |
| As the main channel for coal-fired transmission, the noise from the corridor has a large impact on nearby residents. Deploying noise barriers is the main treatment solution at present, but noise prediction software such as Cadna/A cannot accurately simulate and calculate the noise of the corridor with suspended noise barriers underneath the eaves, and thus cannot comprehensively evaluate the treatment effect of each common type of noise barrier in the corridor noise control scheme. In this paper, based on the geometric modeling of Cadna/A prediction software, the geometric position relationship is used to transform the lower eave bypass of a noise barrier into a calculable upper eave bypass, and the equivalent calculation is performed using Cadna/A, and the feasibility of the method is verified by theoretical calculation. By applying this method, noise prediction modeling of a power plant corridor noise, three noise control solutions of upper and lower eave noise barrier, low noise roller replacement, and low noise roller with upper and lower eave noise barrier are simulated and calculated, and the results show that all three solutions can achieve the sound environment quality standard 2 under different engineering volume, and further by economic analysis, the replacement of low noise roller has the best cost performance. The noise prediction modeling strategy adopted in this paper can realize the noise prediction of various types of suspended noise barriers, and the comparative analysis of each control scheme can also provide a scientific basis for the noise management of the same type of corridor, which has great application value. |
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