WAVE TRAPPING BARRIERS

波浪捕获屏障

• 批准号: DP0453328
• 负责人: Prof Dr Jie Pan
• 金额: $ 25.04万
• 依托单位: The University of Western Australia
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2004
• 资助国家: 澳大利亚
• 起止时间: 2004-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0453328
• 关键词: WAVE; TRAPPING; BARRIERS

Traditional noise barriers have poor performance when installed as parallel barriers in front of noise sources with large reflection surfaces. This is because that the reflected noise from the far side barrier or from the source surfaces contributes significantly to the noise level at the receiver location. This project involves the investigation of a novel barrier, the wave trapping barrier (WTB), which is capable of retaining the noise between the source and the barrier and to provide maximum sound absorption at the frequencies of concern, and thus to minimize the contribution due to the reflection. The aim is to develop a theoretical and experimental model for the physical understanding and optimal design of the WTB. Outcomes include a new generation of noise barriers that are potentially light-weighted, fiberless and with higher insertion loss.

传统的隔音屏障在安装于反射面较大的噪音源前时，其性能较差。这是因为来自远侧屏障或来自源表面的反射噪声对接收器位置处的噪声水平有显著贡献。该项目涉及一种新型屏障的调查，陷波屏障（WTB），它能够保留源和屏障之间的噪声，并在关注的频率下提供最大的吸声，从而最大限度地减少反射造成的贡献。其目的是开发一个理论和实验模型的物理理解和优化设计的WTB。成果包括新一代的噪音屏障，可能是重量轻，无纤维和更高的插入损耗。