现代城市的道路交通噪声污染业已成为突出的环境公害问题之一。上海市内环线工程竣工通车从总体上说,通过提高车速、吸引大量车流,不但对改善市中心区严重堵塞的交通状况能够发挥巨大的作用,而且对抑制大街小巷的噪声也具有积极意义。但就局部范围而言,高架道路沿线内外两侧环境所受到的交通噪声影响将日益加剧,特别是对于居民住宅楼宇集中,或是医院、学校靠近的一部分敏感路段。为此,我们在内环线工程噪声防治研究中,以广 Road traffic noise pollution in modern cities has become one of the prominent environmental pollution problems. As a whole, the construction of the Inner Ring Road in Shanghai is opening to traffic. In general, increasing the speed and attracting a large number of traffic streams not only play a significant role in improving the traffic congestion in the heavily downtown area, but also have a positive effect on suppressing noise in streets and alleys. However, as far as the local coverage is concerned, the impact of traffic noise on both the inner and outer sides of the viaduct along the road will be aggravated. This will be particularly the case with residential areas inhabited by residents or sensitive sections of hospitals and schools. To this end, we in the inner ring engineering noise prevention and control to wide