京沈客运专线框架式声屏障降噪效果研究

高速铁路经过城市建成区两侧分布有高层住宅建筑,普通直立式、折角式声屏障对于较高楼层难以有效阻隔噪声,框架式声屏障具有更好的降噪效果,对其降噪效果的研究越来越成为工程设计中噪声治理选取的重要依据。在阐述框架式结构声屏障插入损失确定方法的基础上,分别采用边界元法、统计能量法预测框架式声屏障的降噪效果,通过实际案例加以类比验证,得出京沈客运专线框架式声屏障降噪效果。

Research on Noise Reduction Effect of Frame-type Noise Barrier on Beijing-Shenyang Passenger Dedicated Line

High-speed railway passes through high-rise residential buildings distributed on both sides of urban built-up areas. Ordinary vertical and angled noise barriers are difficult to effectively block noise on higher floors. Frame-type noise barriers have better noise reduction effect and research on their noise reduction effect has increasingly become an important basis for noise control selection in engineering design. On the basis of expounding the method for determining the insertion loss of the frame-type structure noise barrier, the boundary element method and statistical energy method are respectively used to predict the noise reduction effect of the frame-type noise barrier, and the noise reduction effect of the frame-type noise barrier on Beijing-Shenyang Passenger Dedicated Line is obtained by analogy verification through actual cases.