• 소음진동
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• 제9권6호
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• pp.1106-1115
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• 1999

This paper sums up the study of the soundproof facilities (noise barriers) to be placed on the test track section within the Seoul-Pusan H.S.T. project. The objective of this study is to determine optimum design of soundproof including height, length, location, sound absorbing materials for test track(chonan-taejon). This paper shows the model to design the shape and materials of noise barrier for high speed trains(TGV, ICE, ect). The design of soundproof facilities is to be conducted by MITHRA for the prediction of noise impact of the TGV and for optimising noise barriers in order to reduce the noise generated by high speed trains. A number of computer simulations are carried out in order to determine the specification of noise barrier on test track.

• 한국철도학회논문집
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• 제4권1호
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• pp.31-37
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• 2001

There are three examples of noise reduction test by joint improvement. One of them is tested for electric car at joint rail and another is tested at expansion joint and long welded rail and the third is tested at open deck bridge. We can know from the result that the noise reduction effect of rail welding is very different to the type of track and the car. The condition of the test has some differences, but it may be useful reference of noise reduction

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 춘계학술대회논문집
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• pp.1367-1372
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• 2000

Recently, many new constructuion and large scale modification of railway are performed for cost down of goods delivery charge and effective transportation in various aspect. Although railway traffic is environmentally frendly in many part but weak in noise and vibration problem. For the reduction and efficient management of railway noise, first of all prediction of railway noise is necessarily requisted. In domestic and abroad many studies for prediction of railway nearby noise are done. In this study simple modelling technique is investigated for railway noise prediction when railway passes above elevated concrete bridge as well as ground. Predicted results are compared with measured results and it is known that suggested modelling technique can be used for more precise prediction of railway nearby noise.

• 대한환경공학회지
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• 제39권12호
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• pp.679-684
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• 2017

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 소음예측기술 및 저감기술이 개발되어야 한다. 이와 같은 요구에 부합하기 위해, 400 km/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.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2001년도 춘계학술대회논문집
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• pp.1022-1027
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• 2001

In this study, the train-induced vibration was measured at many locations at/around the actual service lines and the data base was constructed using the measurement results. The characteristics of train induced ground vibration was categorized and the empirical ground vibration estimating equations were developed. On the ground area (level grounds, embankments, cut sections), the vibration estimating equations were developed in terms of ground vibration level which was related with the distance from the source. Especially for the cut section areas, the vibration levels were expressed with the vibration receiving point expressed by the ratio of vertical distance to horizontal distance(V/H) from the source. As a result, when V/H is 0.96, the vibration estimating equation gives a minimum vibration level.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 춘계학술대회논문집
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• pp.924-928
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• 2002

Response of the rail surface is an important factor for the train safety and comfortable travel, and evaluation of vibration at the area along a rail is an important factor for the vibration. The dominant method to reduce the vibration that reach the ground is installing vibration absorber between rall and the under structure. In this paper, we evaluated the vibration reducing effect of using vibration control sleeper pads to slave and earth at certain distance from the sleepers.

• 환경위생공학
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• 제3권2호
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• pp.43-60
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• 1988

This study was carried out to determine traffic noise level and analyze noise reduction effects of various sound protection facilities in the area of Seoul, Inch'on, Songchoo and Seoul- Busan Expressway from March to Octover, 1987. The results were as follows; 1. As compared with the environmental standards and the traffic noise level in heavy noise areas, traffic noise levels observed were shown in higher than environmental standards. The noise levels in Seoul were determined at 12.8-18.2 dB(A) in daytime and 19.0-26.9 dB (A) in nighttime. And incase of inch'on, it were 6.7-9.6 dB(A) in daytime, 7.9-18.9 dB(A) in nighttime, respectively. 2. The environmental noise level observed in the backside of protection facilities, such as apartment, soundproof barrier and houses, which were constructed in paralled to the road was lower about 3-5 dB(A) than perpendicular to theroad. Noise recuction effect of upper stairs in apartment was higher than lower stairs. 3. The predicted noise level obtained from the equation $({\triangle}L\;=\; -10\;log\;(^{I'1}/Ii)\;was\;\pm\;1dB$ (A) and the correlation coefficient (r) was 0.923. 4. The noise reduction effect in backside of apartment was measured at on sites and predicted by total noise loss equation. The predicted noise level was 60.9 dB(A) and the measured level was 60.6 dB(A), respectively. 5. The narrow width landscape less than 10m width was almost no effect for the protection of traffic noise. According to the synthesis of the above results, the noise level of the road was exceeding mostly the environmental standard in the heavy traffic areas. The counterplan should be set as well. The insulation of noise protection facilities were effective by the location with near distance from the road edge. The reduction effect of double window in apartment was represented so much. The prediction model could be applied to estimate the noise levels in the roadside as well as the effectiveness for the noise protection facilities.

• 사상체질의학회지
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• 제11권1호
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• pp.63-77
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• 1999

1. 연구목적 : '연변조선족민족의약연구회(延邊朝鮮族民族醫藥硏究會)'에서 1984년에 영인한 "동의수세보원사상초본권(東醫壽世保元四象草本卷)"의 필사본(筆寫本)은 여러 정황과 글의 내용으로 보아 동무(東武) 이제마(李濟馬)의 글로 추정되며 "동의수세보원(東醫壽世保元)"저술 이전의 초기 저작과 같은 글임을 확인할 수 있어 이를 밝히고자 하였다. 이 논고는 문헌의 내용을 언급하기 이전에 반드시 선행이 되어야 할 서지학적(書誌學的)인 고찰과 문헌 연구의 일환이다. 2. 연구방법 : 문헌 제공자인 손영석(孫永錫)의 진술 내용과 문염(文厭)의 내용을 중심으로 "동의수세보원사상초본권(東醫壽世保元四象草本卷)"이 "동의수세보원(東醫壽世保元)" 내용으로 발전 과정과 개념 및 병증약리(病證藥理)의 변화를 문헌적 고찰을 통해 살펴보았다. 또한 동무공의 기타 저술과 비교하여 저술 시기를 추정해 보았다. 3. 연구 결과 및 결론 : 이상의 연구에서 얻은 결론은 아래와 같다. 1) "동의수세보원사상초본권(東醫壽世保元四象草本卷)"은 함흥의 최겸강(崔謙鋼)이 소장하던 것을 김구익(金九翌)이 수초(手抄)하여 1984년 필사본(筆寫本)이 영인(影印)되었고 1985년 10월 연변조선족자치주민족의약연구소(延邊朝鮮族自治州民族醫藥硏究所)에서 발간한 "조의학(朝醫學)" 제1편(第一冊) 사상의학론(四象醫學論)에서 부록으로 '사상의학초본권(四象醫學草本卷)'이라는 제목으로 출판되었다. 2) "동의수세보원사상초본권(東醫壽世保元四象草本卷)"은 그 편제에서 "동의수세보원(東醫壽世保元)"의 내용이 각 편마다 함축되어 있고 권지삼(卷之三)의 태양인약방(太陽人藥方)에서 동무공(東武公) 자신이 태양인(太陽人)임과 태양인(太陽人)의 병증약리(病證藥理)를 성립하게 되는 과정을 서술하고 있어 동무공(束武公)의 저술임을 확인할 수 있다. 3) "권지삼약방(卷之三藥方)"에서 "동의수세보원(東醫壽世保元)" 신정방(新定方)의 기원이 되는 처방을 확인할 수 있으며 대표적으로 "소음약방(少陰藥方)"의 반강탕(半薑湯)은 계지반하생강탕(桂枝半夏生薑湯)으로 "태음약방(太陰藥方)"의 구미천문동탕(九味天門冬湯)은 청심운자탕(淸心運子湯)으로 발전한 것으로 추정된다. 4) "권지삼약방(卷之三藥方)"을 통해 태소음양인(太小陰陽人)의 병증약리(病證藥理)의 성립 과정을 알 수 있으며 소양인(少陽人)의 병증약리(病證藥理)가 비교적 초기에 완성되고 태음인(太陰人) 병증약리(病證藥理)가 완성되고 소음인(少陰人)의 병증약리(病證藥理)는 증치의학(證治醫學)의 처방을 이용하다 비교적 후기에 완성되었음을 확인할 수 있다. 5) "동의수세보원사상초본권(東醫壽世保元四象草本卷)" 권지일(卷之一)의 지(知)와 행(行)에 대한 인식은 "성명론(性命論)"의 사고와는 달리 비교적 정제되지 않은 상태이며 "격치고(格致藁)" "유약(儒略)"과 "반성잠(反誠箴)"의 사고와 유사함을 볼 수 있다. 6) "동의수세보원사상초본권(東醫壽世保元四象草本卷)"의 저술시기는 "동무유고(東武遺稿)" 약성가(藥性歌)나 39세 망음증(亡陰證) 치험례 이후이며 저술로 "격치고(格致藁)" "유약(儒略)" "반성잠(反誠箴)" 저술 전이나 저술 당시로 추정되어 40대 후반과 50대 초반 사이의 저술로 추정된다.