摘要
沿道路建立声屏障是控制交通噪声的主要措施之一。在传统的声屏障设计中,多采用的是基于波动理论的近似方法。这种方法很难实现声屏障的优化设计。鉴于此,引入统计能量分析方法,利用成熟的工程软件,开展统计能量分析在声屏障设计中的应用研究。通过与传统方法的对比,验证统计能量分析方法在声屏障设计中的有效性,并利用统计能量分析方法得到不同结构形式声屏障插入损失的仿真结果。与传统方法相比,统计能量分析方法不仅能够准确反映增加声屏障后声波的传播路径,方便快捷地进行声屏障的结构设计,同时能够进行不同形式的声源特性及声衰减的模拟。
Sound barriers are very important facilities to control traffic noise. In traditional methods of design of sound barriers, the wave theory of sound is used widely. However, it is too difficult to realize optimization of design by this method. And statistical energy analysis method is introduced. Using reliable software, studies on the application of SEA in design of sound barriers are performed. With calculating the insert loss of typical sound barrier model , the effectiveness of SEA in design of sound barriers is validated. The simulation results of different kinds of sound barriers are gained. By contrast with traditional methods, SEA can be used not only to describe the paths of sound transmission after adding sound barriers, but also to design its structure. Furthermore, acoustic characteristics of different sound sources and of different sound attenuations can be simulated easily in SEA models.
出处
《噪声与振动控制》
CSCD
北大核心
2008年第4期126-128,共3页
Noise and Vibration Control
关键词
声学
声屏障
统计能量分析
噪声控制
插入损失
acoustics
sound barriers
statistical energy analysis
noise control
insert loss
