道路声屏障保护区噪声级上升原因的探讨

Discussion on Causes for Rise of Noise Level in Area Protected by Road Noise-barrier

针对国内不少公路及城市道路声屏障保护区噪声级明显上升的状况 ,提出了交通量增加、重型车和超载车比例增大 ,以及各种声屏障的缝隙是影响降噪效果的主要原因 。

In view of the situation that the rise of noise level in the area protected by noise-barriers on many highways and urban roads in China, the authors think that the increasement of traffic, ratio acceleration of heavy trunks and over-loading vehicles, different kinds of apertures of noise-barriers are the main causes. Furthermore, academic analysis and discussions are carried out in the paper.