| Keywords |
Road traffic noise ; Traffic flow ; Traffic volume ; Noise reduction effect ; Field measurement |
| Abstract |
Road traffic noise characteristic and its influence are basically analyzed in order to reduce and predict the road traffic noise through planning of apartment complex and sound insulation of apartment building. This study is to present the basic data for reducing and predicting road traffic noise in urban apartment buildings. For the purpose of it, the traffic noise characteristics and its influence on buildings are analyzed through the field measurement of the traffic flow rates and noise levels in subjected 3 apartment buildings. Traffic flow rate and road conditions of their adjacent roads are different from each other. As a result, the noise levels from the even road adjacent G and S apartment fluctuated by the traffic signal, and those from the sloped road by K apartment even more fluctuated because of less traffic volume and more rapid traffic speed. Noise spectra in frequencies by the adjacent roads show high in mid and higher frequencies, 500 Hz~2 kHz due to traffic flow of them. Noise reduction showed much in the order of the horizontal distance, and that of the apartment building perpendicular to the road was much more than that parallel to it. Noise reduction in living room showed about 15 dB(A) in apartment parallel to the road, and its effect on apartment parallel to the road is more effective than that perpendicular to it. |