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고속도로 교통소음 평가를 위한 도로교통소음 예측모델의 인자분석 및 신뢰성 평가
윤제원,김철환,이웅용,강혜진,이주원 대한환경공학회 2022 대한환경공학회지 Vol.44 No.8
The purpose of this study is to evaluate the reliability of prediction models(KHTN, RLS-90, CRTN, NMPB-08) that are widely used in road traffic noise analysis. For this purpose, the accuracy and difference values of the prediction model were analyzed by comparing the measurement values performed at the total of 21 highway sites, reflecting various conditions such as road structure, road pavement type, and noise barrier installation. In addition, the correlation between commercial programs(SoundPlan, CadnaA) was compared and reviewed for each of the same prediction models. First of all, as a result of analyzing the accuracy of each prediction model, KHTN is rated as 92.8% the most accurate based on ±3 dB error range. And CRTN is rated as 74.0∼76.8% the most accurate among prediction models inherent in commercial programs. And, as a result of analyzing the correlation between commercial programs for prediction models, CRTN is 100% highly correlated and NMPB has the lowest correlation by 69.6%. 이 논문의 목적은 도로교통소음 해석에 많이 사용되는 예측모델(KHTN, RLS-90, NMPB-08, CRTN)의 신뢰성을 평가하기 위함이다. 이를 위해, 예측모델을 음원모델과 전파모델로 분리하여 각각에 대한 특징을 분석하였고, 도로 구조 및 포장종류, 방음벽 설치 유·무 등 다양한 조건의 21개 고속도로 현장에서 수행한 측정치를 예측치와 비교하여 예측모델의 차이값 및 정확도를 분석하였다. 또한, 동일 예측모델에 대해 상용 프로그램간(SoundPlan, CadnaA) 상관성을 검토하였다. 우선, 예측모델별 정확도를 분석한 결과 ±3 dB 오차범위를 기준으로 KHTN의 정확도가 92.8%로 가장 높게 평가된다. 또한, 상용 프로그램에 내재된 예측모델 중에서는 CRTN의 정확도가 74.0∼76.8%로 가장 높게 평가된다. 그리고, 예측치에 대한 상용 프로그램간의 상관성을 분석한 결과, 전체구간에 대해 평가 시 CRTN의 상관성이 100%로 가장 높고, NMPB가 69.6%로 가장 낮은 것으로 평가된다.
윤제원,이주원,조용성 한국산학기술학회 2024 한국산학기술학회논문지 Vol.25 No.2
The purpose of this paper is to analyze the effect of reflected sound according to the ratio(λ=H/W) of the width of lane(W) and the height of noise barrier(H) when noise barrier is installed parallel to both directions of the lane to reduce traffic road and railway noise. To this end, noise analysis was performed using 2D BEM, and the amount of degradation of insertion loss(IL) was analyzed at the receiving points at the behind of noise barrier according to the ratio, λ. As a results of the evaluation, if the reflective noise barriers are installed in parallel in both directions, the IL degradation value is insignificant if the ratio, λ is 0.05(W:H=20:1), but if the the ratio, λ is 0.1(W:H=10:1), the IL degradation value is expected by about 2 dB, and the IL degradation is further increasing as the ratio, λ increases. And, the amount of IL degradation of reflective noise barrier according to the ratio, λ was proposed as an equation. These evaluation results are considered to be useful as data for reviewing the reflection effect when designing parallel noise barrier if high-rise apartment houses exist in locations adjacent to traffic road or railway.
윤제원,조용성,장강석,김영찬 한국생태환경건축학회 2017 한국생태환경건축학회 논문집 Vol.17 No.6
Purpose : The purpose of this study is to investigate the acoustic performance evaluation method for resonance type noise reduction device installed on the top of noise barrier. Method: In order to evaluate the acoustic performance of the resonance type noise reduction device installed on the top of noise barrier, the measurement of insertion loss in the semi-anechoic chamber and transmission loss using the impedance tube were conducted. Acoustic mode analysis was also performed to evaluate the resonance frequency of a complicated shaped resonator. By using the two-dimensional boundary element method, the study on the deriving a problem in evaluating the acoustic performance at the rear stage of the resonance type device was conducted and an alternative solution of the problem was suggested, and the acoustic performance in the rear stage of resonance type device was evaluated when a number of resonators were mixed. Result : In order to solve the difficulty in analysis of the acoustic characteristics of resonance type noise reduction device, an effective evaluation method was proposed by using the two-dimensional boundary element method in present work. Also acoustic performance was analyzed at the receiver point of the noise reduction device in which many resonators present simultaneously.
윤제원(Je-Won Yoon),김영찬(Young-Chan Kim),김금모(Keum-Mo Kim),장강석(Kang-Seok Jang),구본성(Bon-Sung Ku),엄주용(Joo-Yong Eom) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.10
The purpose of this study is to develop an air-passing soundproofing panel with more improved structure to reduce the CO2 emission and installation cost. To reduce the emission of CO2 ; it is suggested to choose low CO2 emission material relative to the aluminum and to reduce the materials by developing a specially designed air-passing soundproofing panel structure. First of all, we performed the flow analysis to predict the wind pressure according to the open angle of the air-passing soundproofing panel and the noise level analysis at the receiver point. To verify the simulation, a prototype of the soundproofing panel was made. The flow test in the wind tunnel and load test were performed. The economic evaluation for the installation of the air-passing soundproofing panel was performed and specifications of the installation was prepared. As the results of this research, it was verified that the wind load was reduced about 40% to that of the conventional one at 25m/s wind speed in the wind tunnel test. By applying the 4m span soundproofing wall with air-passing soundproofing panel and under the cost of 250 thousand won/m2 instead of the conventional 2m span panel, the installation cost will always be lowered than the conventional one in the combination of (60:40~50:50) conventional to air-passing soundproofing panel from the economic evaluation. The 20% reduction of CO2 was found by changing the 50% of aluminum soundproof panel to air-passing soundproofing panel.
윤제원(Je-Won Yoon),김영찬(Young-Chan),심상덕(Sang-Deok Sim),구본성(Bon-Sung Ku),엄주용(Joo-Yong Eom) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.4
The aluminum soundproofing panel used to the traffic noise reduction will judge with the material to improve because the CO2 emission is greater than other soundproofing panel such as plastic soundproofing panel. Also, if the air-passing soundproofing panel which can endure the fast wind velocity will be developed, it judged that it can reached to the target of low CO2 traffic technology development using the reduction of material cost and the lower consumption of steel. The objective of this study is to improve the soundproofing panel and to develop the air-passing soundproofing panel for the replacement of aluminum sound proofing panel which is more emit CO2 than other soundproofing panel. And, we tried to develop the reduction technology of CO2 emission through the development of air-passing soundproofing panel. At first, the flow and noise simulation were conducted for the purpose of the calculation of wind pressure on soundproofing wall and noise exposure level on receiver points according to the open ratio of air-passing soundproofing panel. And the 1<SUP>st</SUP> and 2<SUP>nd</SUP> mockup of air-passing soundproofing panel were made, and the design load test were conducted for these mockup.
400㎞/h급 고속철도 소음저감용 방음벽 상단장치 개발에 관한 연구
윤제원(Je Won Yoon),김영찬(Young Chan Kim),장강석(Kang Seok Jang),홍병국(Byung Kook Hong),엄기영(Young-Ki Eum) 한국소음진동공학회 2013 한국소음진동공학회 학술대회논문집 Vol.2013 No.4
본 연구의 목적은 400㎞/h 급 고속철도 소음저감용 방음벽 상단장치를 개발하기 위함이다. 이를 위해 우선 현장에서의 소음측정을 통한 400㎞/h 급 고속철도(HEMU) 및 300㎞/h 급 KTX의 주파수특성을 분석하였다. 그리고, 해석적 기법(BEM) 및 시작품 제작을 통한 실내실험을 수행하여 3dB(A) 이상의 소음을 저감시킬 수 있는 상단장치를 설계하였다. 마지막으로, 상단장치 시작품을 제작하여 옥외실험에서의 성능시험을 수행하였으며, 고속철도의 주파수특성을 반영한 상단장치 설치 전후의 감음량을 평가하였다.