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장강석(Kang-Seok Jang),심상덕(Sang-Deok Sim),김영찬(Young-Chan Kim),김두훈(Doo-Hoon Kim) 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-
When visual intrusion is an important factor, it is desirable to find alternative methods of improving the insertion loss of a noise barrier without increasing the height. Therefore, the primary object of the work attenuate the noise due to railway by small interference device installed at noise barrier edge. In this paper the performance of noise barriers with attached interference device, in terms of shape, absorptive material and split panel, are examined using the boundary element approach. Also, the scale models are mounted in an anechoic chamber and the frequency of the sound sources are appropriately scaled to simulate full scale site conditions. Lastly, experimental measurements of the designs are executed for a range of frequencies and receiver positions, and are compared with the results of numerical modeling.
장강석(Kang Seok Jang),김영찬(Young Chan Kim),윤제원(Je Won Yoon),서효선(Seo Hyo Sun),엄기영(Eum Ki Young),최찬용(Chan Yong Choi) 한국철도학회 2017 한국철도학회 학술발표대회논문집 Vol.2017 No.05
300km/h 의 고속철도가 400km/h 로 증속 될 환경소음이 약 7dB 정도 증가합니다. 증가되는 소음에 대응하기 위한 일환으로, 4 차년의 1 단계 인프라연구를 통해 선로 변 벽체 상단에 설치하는 상단장치와 콘크리트 도상에 설치하여 반사소음을 줄여주는 흡음블럭 개발을 완료하였다. 본 연구에서는 1 단계에서 개발된 고속철도 용 방음장치의 고도화와 장기모니터링을 통해 환경소음저감을 위해 실시하는 초기설계에 반영을 하기 위한 자료를 취득하고 내구성을 검증하고자 한다. 또한 본 연구의 2 차년도에는 고도화 제품에 대한 고속철도 현장부설 시험을 통해 경제성, 시공성 및 성능 등을 검증할 예정이다. When the speed of the high-speed train increases from 300km/h to 400km/h, the environmental noise is increased about 7dB.Two types of noise reduction devices were developed from the first stage of research from 2010 to 2014 to economically and efficiently cope with the increased noise. One type is the noise reduction devices installed on the top of noise barrier or wall in the railway. The other one is a noise absorbing block that is installed on the concrete slab to reduce concrete reflection noise. The purpose of this study is to enhance the practical use of the noise reduction device developed in the first stage, and another object is to obtain data for initial design of environmental noise through long-term monitoring. This advanced research is being carried out over two years. In the first year, the economic efficiency and the application method of the developed noise reduction device are improved. Also, monitoring was performed at all seasons depending on train types and speed. In the second year, it will be installed directly on the highspeed railway section to verify economics, workability and performance.
방음벽 상단장치의 내부격자 변경 시 모니터링 및 성능 검증에 대한 연구
장강석 ( Jang Kang Seok ),서효선 ( Seo Hyo Sun ),최찬용 ( Choi Chan Yong ) 한국구조물진단유지관리공학회 2018 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.22 No.1
This study was carried out on the upgrading of the noise barrier top device developed by 400km/h high speed railway infra research. By modifying the inner shape of the top device installed on noise barrier top, the performance of the first-stage top device was improved, and the weight was greatly reduced as compared with the first stage top device. In addition, the upper part was completed without an installation fixture by the integral method, and the construction was greatly improved. Finally, the upgraded top device was installed on the HONAM high speed railway site and its performance was verified.
400 ㎞/h 고속철도 환경소음저감을 위한 선로 변 벽체 상단장치개발에 관한 연구
장강석(Kang Seok Jang),김영찬(Young Chan Kim),서효선(Hyo Sun Seo),최찬용(Chan Young Choi),박준홍(Jun Hong Park) 대한환경공학회 2017 대한환경공학회지 Vol.39 No.12
고속열차의 설계 및 운행기술이 발전하면서 고속철도의 운행속도가 빠르게 증속되고 있다. 반면 증속 시 발생하는 소음으로 인해 고속철도 연변의 주거지역 등에서는 많은 소음문제가 발생하고 있으며, 고속철도 소음에 대한 민원도 지속적인 증가추세에 있다. 향후 고속철도가 원활히 설계속도대로 운행되기 위해서는 고속철도의 방사소음특성에 적합한 소음예측 기술 및 저감기술이 개발되어야 한다. 이와 같은 요구에 부합하기 위해, 400 ㎞/h 고속철도 인프라 연구가 수년에 걸쳐 진행되었다. 이 연구를 통해 신뢰성을 갖는 고속철도 소음예측평가 기술이 개발되었고, 현재 소음저감기술의 단점을 극복하기 위한 핵심방음장치가 개발되었다. 본 연구의 궁극적인 목적은 고속철도 환경소음을 줄이기 위해 개발된 선로 변 벽체 상단에 설치되는 상단장치의 소음성능평가 및 풍압안전성 검증에 관한 것이다. Recently, the speed of high-speed railway has been rapidly increase with the development of high-speed train design and operating technology. This causes a lot of complaints related the environmental noise in residential areas near the high-speed railway. In order to operate the high-speed railway in accordance with the design speed, noise reduction technology should be developed to meet the noise characteristics of high-speed railway. And it is important to develop the prediction technology by grasping the noise radiation characteristics. In order to meet these requirements, in recent years, infra-research for 400 ㎞/h high speed railway has been conducted. Reliable noise prediction and noise reduction techniques have been developed through this study. This paper is concerned with wind pressure safety and noise performance evaluation of the newly developed 400 ㎞/h noise reduction device. The wind pressure safety and The noise performance of the developed device was confirmed by this paper.