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히라이 켄지(Hirai Kenji),코마츠 유키오(Komatsu Yukio),이상준(Yi Sang-Jun),쯔쯔미 히로키(Tsutsumi Hiroki) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)
Japanese government and local government in Japan have a lot of buildings and facilities which account for a third of all buildings in Japan. And the public Facilities over 30 years old account for 23% of all public facilities and it may account for 55% 10 years later. Especially public school facilities, from latter half of 1940s, the population has been increasing and many residential sections have been developing. And this has been also causing foundation of many public school facilities and we have a lot of stocks of them. Now we have to consider many elements and examine how we should manage the facilities, keeping, reselling, or dismantling. In this study, we improve one school facility by External Insulation Finishing System that is one of the ways to repair and improve buildings, and figure out how much effective the system is in terms of thermal condition, repairing cost, and electricity charges. Through this research, we can say that the case External Insulation Finishing System is used is more expensive than that usual repairing way is used. But we can also say that External Insulation Finishing System keeps structures stable condition in terms of durability, and saves electricity charges in case air-conditioner is installed.
기존 공공시설의 장수명화를 고려한 개수수법에 관한 연구
히라이 켄지(Kenji HIRAI),이상준(Sangjun YI),쯔쯔미 히로키(Hiroki TSUTSUMI),코마츠 유키오(Yukio KOMATSU) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
Today in Japan, We have so many old public facilities. In Japan, External Insulation Finishing System (EIFS) have been focused on as the method to improve the performance of saving energy, and several studies of EIFS have been mainly made in cold districts. This study is to examine the effectiveness of EIFS as the Life Extension Repairing Method for existing facilities. This study is by measuring the actual condition of a school repaired with EIFS and simulation with FEM. The main results are: ① By EIFS, change of the outside surface temperature is controlled and the difference of surface temperature between outside and inside are also controlled. ② On the rooftop, EIFS is most effective in terms of control of surface temperature. ③ With FEM, the risk of cracking on the rooftop and walls is reduced by EIFS repairing.
히라이 켄지(Hirai Kenji),코마츠 유키오(Komatsu Yukio) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
According to Survey Results of the 2003 Housing and Land Survey, In Japan, there are about 47million dwelling houses and more than half of them are detached houses made of wood (about 25million). In Japan, most of the home buildings are made of wood and are by the conventional method of construction or the wood frame construction. It has been said that there are some differences between localities. Japanese life style has westernized and material distribution system has developed, we need to study about the differences again. In this study, with the cooperation of the Fixed Property Tax of the Local Tax of Bureau Division of the Ministry of Internal Affairs and Communications and 10cities(Sapporo, Aomori, Niigata, Mito, Gifu, Toyama, Kobe, Hiroshima, Takamatsu, Miyazaki), we study about some differences by comparing fixed cases in terms of building construction. These days in Japan, as a way of a supply of home buildings is more variable and Japanese life style is westernized, we can't find definite local characteristics of wooden home buildings easily like before. Especially it is not easy to find characteristics of inside buildings, interior walls, ceilings, floors and so on. But we can also find some obvious differences of floor space, roofs, exterior walls, and so on influenced by situations of building estates and climate. Through this study, we can say that the differences of wooden home buildings between localities are seen more obviously in terms of exteriors than interiors.
우에키 다카히데(Takahide UEKI),히라이 켄지(Kenji HIRAI),이상준(Sangjun YI),쯔쯔미 히로키(Hiroki TSUTSUMI),코마츠유키오(Yukio KOMATSU) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
In this study, we improve one school facility by External Insulation Finishing System that is one of the ways to repair and improve buildings, and figure out how much effective the system is in terms of thermal condition, repairing cost, and electricity charges. Through this research, we can say that the case External Insulation Finishing System is used is more expensive than that usual repairing way is used. But we can also say that External Insulation Finishing System makes the classroom condition better, keeps stable condition in terms of durability, and saves electricity charges in case air-conditioner is installed.