Cadna 모형에 의한 방음벽 최적설계에 관한 연구 = A Study on the Optimal Design of Noise Barriers Using Cadna Model

다국어 초록 (Multilingual Abstract)

As a result of estimation using equivalent level of noises measured by each point (N-1~N-4) and Candna-A program, it shows differences within ±2.7dB(A) in observance of differences between the value of actual measurement and the estimated value and as a result of comparison this with a relative error, it showed below 4.21% by each point. As a result of this, it is judged that the adaptability to estimated values using values of the actual measurement and Cadna-A program is high. Therefore, as a result of estimation on height and length of optimal soundproofing walls using Cadna-A program, for estimation of height of soundproofing walls, the length of it should be identical with 335m and as a result of estimation of outdoor noises by each floor with the height of it elevated in order of 5m, 5.5m, 6.0m, 6.5m, when it was installed with the height of 6.5m, which was estimated to satisfy the standard of outdoor noises environment, 65dB(A), in all of block 305, 306, and 308 and for estimation of length of soundproofing walls, as a result of estimation of outdoor noises by each floor with the length in order of 310m, 270m, 240m, and 230m and the identical height of 6.5m, when it was installed in length of 230m, it was estimated to satisfy the standard of outdoor noises in all of block 305, 306, and 308.
As a result of estimation of outdoor noises with Cadan-A, it was estimated that soundproofing walls with 230m in length and 6.5m in height should be installed in order to satisfy the standard of outdoor noises in areas as subjects of this study.