我国目前对城市居民影响最大的道路交通噪声,约占各类城市噪声源的40％,在大、中城市,等效噪声级超过70dB(A)的交通干线一般约占2/3。自“六五”计划以来,我国的城镇住宅建设,以平均每年竣工面积1亿平方米的速度在增加。虽然在1982年已经公布了“城市区域环境噪声标准”(GB3096—82),但据统计,目前仍有约40％的居民生活在高 At present, China’s road traffic noise, which has the greatest impact on urban residents, accounts for about 40% of the noise sources in various cities. In major cities and medium-sized cities, traffic routes with an equivalent noise level exceeding 70dB (A) generally account for about two thirds of the total. Since the “6th Five-Year Plan”, China’s urban housing construction has been increasing at an average of 100 million square meters per year. Although the “Urban Area Environmental Noise Standard” (GB3096-82) has been released in 1982, it is estimated that about 40% of residents still live in high