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개수를 고려한 기존학교시설의 주거성능향상방안에 관한 조사연구
히라이켄지(Hirai Kenji),코마츠 유키오(Komatsu Yukio) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
In Japan 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 schools. But now we have to consider many elements and examine how we should manage the facilities, keeping, reselling, or taking down. In this study, we improve one school facility by External Insulation Finishing System that is one of the way to repair and improve buildings, and figure out how much effective the system is and how much better and cooler condition in a classroom changes. We experiment three types of ventilation by opening and closing windows (open only in the day time, open all-day, and close all-day). According to the results of measurement, in the case of a slab, a top surface temperature, which is not improved by the system, keeps changing all-day (the difference between the hottest and the coldest is about l4degrees). But the temperature, which is improved by the system, keeps almost the same temperature all-day (the difference between the hottest and the coldest is about 1 degrees). And in terms of the difference of surface temperature between the top and the bottom, there's very little difference in the case of the slab, which is improved. In terms of condition ina classroom, temperature in the classroom, which is improved by it, is lower than that in the classroom, which is not improved (the difference is 0~2 degrees). And both of an improved classroom and non-improved one, PMV (Predicted Mean Vote) value in the classrooms when windows are open is lower than that in the classroom when windows are close, that is to say condition in the classroom when windows are open is more comfortable and it is very effective and important to keep the windows open. Through this research, we can say that External Insulation Finishing System makes the classroom condition better in terms of various kinds of temperatures and indexes, and the system is good for buildings in terms of durability.
공동주택 장기수선계획 및 대규모수선공사에 관한 조사연구 Ⅲ
이상준(Yi Sang-Jun),코마츠 유키오(Komatsu Yukio) 대한건축학회 2008 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.28 No.1(구조계)
Recently, Japan tries to use the building long as much as possible for realizing environmentally friendly and sustainable society. To use the building long, an appropriate control of maintenance is important. The major points to use the apartment house for a long time are large-scale repair works and long-term repair plan etc. However, neither the content nor the costs of the long-term repair plan are clear. There is no data to understand the execution time and the cost of the large-scale repairing work. Therefore, this study focused on clarifying current state of large-scale repair works through analysing detailed estimate sheets. The results of this study as following. ① Several repair works or improvements having different repairing cycle will be done concurrently as large-scale repair works. ② Large-scale repair works tend to done chiefly in 9~15years and in 21~27years. ③ In the large-scale repair work of the apartment house where the number of houses is a few, the width of distribution of the unit price is wide.
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.
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.
Nakagawa, Ryota(나카가와 료타),Yi, Sangjun(이상준),Hirai, Kenji(히라이 켄지),Komatsu, Yukio(코마츠 유키오) 대한건축학회 2019 대한건축학회 학술발표대회 논문집 Vol.39 No.2
While finances of local governments deteriorate due to declining birthrate and aging population, local governments are considering the promotion of intensive urban structure as a means to cope with problems such as deterioration of public facilities. In this study, we examined the residents" awareness of the consolidation of public facilities centering on school facilities, and the residents" intention for the formation of a base of community residence and migration. As a result of the survey, there was a general tendency to agree on the consolidation of public facilities and the formation of the bases, but there were many negative opinions on migration, and the elderly tended to settle. In the future, in order to deepen the residents" understanding of the consolidation, it is required to consider the effects of consolidation quantitatively and to consider the phased measures considering the long-term.
이상준(YI Sangjun),히라이켄지(HIRAI Kenji),쯔쯔미 히로키(TSUTSUM Hiroki),코마츠 유키오(KOMATSU Yukio) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
This study investigates organizational structures and process of construction, improvement, repair of each municipality to propose an efficient organizational structures and management process. The following three are the key problems for the facilities management efficiency improvement. ① Unification and sharing of information related to facilities ② Regular building deterioration check ③ Making of the communications between departments
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.
야마모토 히로타카(Hirotaka YAMAMOTO),이상준(Sangjun YI),히라이켄지(Hiroki Kenji HIRAI),코마츠 유키오(Yukio KOMATSU) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
This study aimed to clarify that whether public buildings are promoting energy conservation and management plan and repair considering the LCC, and conducted a survey of 220 Japanese public museum. In this analysis, it was found that the museum is taking a huge construction costs and maintenance costs. In addition, it is necessary to promote energy efficiency and reduce costs by making the following efforts to improve the management of the museum. ①Designing in consideration of the easiness and LCC of the cleaning and mending. ②Advancing the efficiency improvement of construction materials and environmental equipment in order to reduce for the maintenance costs. ③Standardizing the system of management.