摘要
根据波动声学和几何声学原理,将列车看作一运动着的有限长线声源,建立了有声屏障时城市高架轨道交通沿线声场分布计算模型。该模型的建立及其应用可为高架轨道交通的规划及其声屏障设计提供科学依据和手段。模型中对声影区的声场分布采用惠更斯-菲涅耳原理进行推导计算,给出的理论计算公式可为推导计算其它复杂声源的衍射声提供借鉴。
According to the theory of wave acoustics and ray acoustics,train is regarded as a moving limited line sound source and the mathematics model of sound field distribution is set up around the elevated railway. This model provide scientific foundation and method for sound barrier design. In this model, the noise field in sound shadow region is deduced by applying Huygens-Fresnel principle. It provides a new ideal for deducing the diffraction sound of complicated noise source. [
出处
《工程建设与设计》
2005年第4期10-12,共3页
Construction & Design for Engineering
基金
杭州环保局资助(200012)
关键词
高架轨道交通
衍射声
声场分布
计算模型
elevated railway
diffracted sound
sound field distribution
model
