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예측식을 이용한 공장설비기기 소음평가와 조절방안에 관한 연구
차상곤,이수열,이상우 대한건축학회 2001 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.21 No.2
With rapid industrial development, a plant has become a main noise source and caused much annoyance for the residents living nearby plant. However efficient soundproofing measures are very difficult because of the lack of basic date and insufficiency of the existing research. In the point, this study is represented for choosing barrier height and length to provide the noise attenuation. For the purpose a measurement of the plant noise and prediction formula was carried out.
현장과 실험실 측정을 통한 공동주택의 간막이벽 차음성능 평가에 관한 기초 연구
차상곤,이상우 경기대학교 산업기술종합연구소 2000 산업기술종합연구소 논문집 Vol.19 No.-
The purpose of this study is to investigate the Sound Insulation Performance of apartment partition walls on the field and reverberation room. For this purpose, walls, which were made in H company and D laboratory were tested in according to KS F2808 :Hd KS F 2809. From the result of this study, the Sound Insulation Performance of apartment partition walls on the field and reverberation room are graded with D-24 and D-29. The Sound Insulation Performance of apartment partition walls was found that the frequency contents of the field and reverberation room were high level in all frequency bands the difference of Sound Insulation Performance.
차상곤,이상우 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1
This study aims at providing useful data for noise reduction of apartment building through an extensive survey of acoustic properties. In the present work, architectural features of apartment building were examined by visiting every site and analyzing drawings. New structure of apartment buildings are being planned and constructed nation wide and noise and vibration are unavoidable by production. Subjective reactions of residents at each area were investigated using questionnaires.
지하철 역사내 승강장의 건축계획적 특성이 내부소음환경에 미치는 영향에 관한 연구
차상곤,이상우 경기대학교 산업기술종합연구소 2000 산업기술종합연구소 논문집 Vol.20 No.-
The purpose of this study is to evaluate the characteristics acoustic response through ceiling materials and platform section which are for both sound transmission paths and sources of sound radiation. The main results of this study are summarized as follows ; 1)Rectangled Aluminum and Aluninum Luba in ceiling materials and circle section are more efficient than other materials and section in the platform . 2)The ceiling materials sound levels were measured for four stations and various factors which influence the platform sound were analyzer. As a result of comparing the measured in four station, it was found that ceiling materials sound In platform with rectangled Aluminum and Aluninum Luba was superior ceiling materials(4∼8 dB(A)) than line Aluminum and zinc galvanizing. 3)Platform section sound levels were measured for three stations and various factors which influence the platform sound were analyzer. As a result of comparing the measured in three station, it was found that ceiling materials sound in platform with circle section was superior platform section(4∼7 dB(A)) than rectangled section.
차상곤,이상우 경기대학교 산업기술종합연구소 2005 산업기술종합연구소 논문집 Vol.29 No.-
The purpose of this study is to measure and evaluate the insulation performance between rooms of the high-rise apartment buildings and then analyze deeply the impact factors of the insulation index as a primary step to find improvement of sound performances of the high-rise apartment buildings which can reduce the noise transmission arising inside the building without increasing the weight of the buildings. The results of this study as follows: (1) A floor impact sound of the object building evaluates obligation of grade which is 'The Provisions for the Housing Construction Standard - The Ministry of Construction and Transportation' : heavy impact sound is 50dB and light impact sound is 58dB. (2) The result of analyzing is evaluated by each other's layers. In the case of applying impact with bang machine, both obligation of grade and contribution ratio is revealed that lower layer(5th) appears displacement difference greatly more than upper(29th) and middle(14th) layer. (3) The result of analyzing is evaluated by each other's P'young. In the case of applying impact with bang machine, the room is showing higher contribution ratio as increase the area. It is showing higher insulation performance as increase the area. In the case of applying impact with tapping machine, the room is showing higher contribution ratio as decrease the area.
차상곤,이상우 경기대학교 산업기술종합연구소 2000 산업기술종합연구소 논문집 Vol.19 No.-
As the economic growth and cultural need becomes Increasing, construction of auditoriums which have better acoustical environment such as concert hall has been increased. To acquire favorable indoor acoustical environment of an auditorium, reverberation time, taco, even distribution of sound pressure and focussing of sound etc. must be considered in the beginning stage of construction planning, but one of the most important factors is the reverberation time. Because reverberation time depends upon number of audience, the inner volume and its surface material of an auditorium, Prediction of reverberation time is rather difficult in the beginning stage of its constructure planning. In this paper, reverberation time is used as a estimating point to describe auditorium. In addition, warmth and brillance of acoustic is used as analysis point for careful decomposition. The procedure of this study is followed. 1)The analysis method of acoustical planning, basic theory of reverberation time are considered through literature. 2)In addition, warmth and brillance of acoustic is used as analysis point for careful decomposition. 3)C Hall is selected as the objects of study to verify the validness of reverberation time and warmth and brillance of acoustic, and measured reverberation time of auditorium is analyzed. The following conclusions were derived from the above process. 1)Reverberation time in C hall was showed good correclation by 0.2 sec(Orchestra Pit) and 0.08 sec(Ha7l) in 500Hz. 2)Warmth and brillance in C Hall were derived in good correlation as good liveness and harmony. 3)As a result of comparision of measureing, theroetial, reverberation time and warmth and brillance were predicted as important analysis point in hall. 4)Reverberation time of a hall is thought to be easily Predicted from volume of a hall and number of audience by the chart Predicting reverberation time.