초음파 전파속도법을 이용한 목조 문화유산 흰개미 피해의 정량 평가

안재철,Ahn, Jae-Cheol 한국건축역사학회 2015 건축역사연구 Vol.24 No.5

Quantitative analysis of termites damage is important in terms of conservation and maintenance of wooden cultural heritage buildings, because termites makes cavities and decreases the section area of wooden structural members. The purpose of this study is to forecast the range and spread of termites damage in the wooden structural members by using ultrasonic pulse velocity method. Ultrasonic pulse velocity has been used as one of non-destructive test to analysis the internal defect by using difference velocity between medium material and cavity. This method would be effective to analysis termites damages. From the result of the ultrasonic velocity test, the loss rate of area effected by termites damage had a strong correlation with ultrasonic velocity. And it is possible to predict the loss rate of area from by termites damage by using regression equation in the case of structural member of fine tree.

1930-40년대 부산·경상지역의 근대 역사문화유산에 사용된 강재의 재료적 특성

안재철,송종목,Ahn, Jae-Cheol,Song, Jong-Mok 한국건축역사학회 2014 건축역사연구 Vol.23 No.6

In this study, we evaluated the chemical and physical properties of structural steel, which is the most basic material for steel structures and reinforcement concrete structures in modern period. We theorized the technical data for the research of technical history of modern heritage structures by analyzing the product system and its quality control of structural steel used in modern historical heritages. The results of this study are as follow; first, the rounded bars were used in most of modern heritage structures. But in the case of Waegwan railroad bridge, the deformed bars were used in spit of not using in Japan after the great earthquake of Kantou. Second, the structural steel was good in terms of quality control, but It has brittle properties because it was not manufactured by heat treatment process.

漢文原典 번역오류 사례분석

安在哲(Jae-Cheol Ahn) 중국어문논역학회 2014 中國語文論譯叢刊 Vol.0 No.35

佛典 『緇門警訓』에 나타난 ‘示ㆍ視’의 詞義 考 : ‘見ㆍ看ㆍ觀’과의 異同을 통하여

안재철(Ahn, Jae-Cheol),문성호(Moon, Sung-Ho),김은희(Kim, Eun-Hee) 대한중국학회 2020 중국학 Vol.72 No.-

佛典을 연구하는 사람들은 흔히 不立文字라고 하지만, 어찌 글자의 쓰임을 구분하지 않고 문장을 올바르게 이해할 수 있겠는가? 마음이라고 다 같은 마음은 아니다. ‘心ㆍ意ㆍ識’이 서로 다른 마음이고, 마음을 닦는다고 할 때 그 마음은 오직 하나의 마음이 아니고, ‘닦아야 할 대상이 되는 마음’, ‘닦고자 하는 주관의 마음’, ‘닦고자 목표로 설정한 마음’, ‘닦아 나갈 때 마주하는 단계 단계의 마음’, ‘닦아서 종국에 이른 마음’ 등으로 분류할 수 있어서, 불전에서 자주 사용되는 ‘心ㆍ意ㆍ識’이나 ‘不覺ㆍ本覺ㆍ始覺ㆍ相似覺ㆍ隨分覺ㆍ究竟覺’ 등의 용어를 분명히 나누어 알면, 佛典뿐만 아니라 한자로 쓰인 문장을 이해하는 데 크게 도움이 된다. 이에 佛典에서 자주 쓰이는 ‘보다’類의 動詞로 ‘見ㆍ看ㆍ觀’과 ‘示ㆍ視’ 등에 관해 본고에서는 ‘示ㆍ視’를 ‘見ㆍ看ㆍ觀’과 비교하는 방법으로 살펴보아 아래의 결론을 얻었다. 첫째, ‘示ㆍ視’는 色境을 앞에 내놓고 보여주거나, 色境이 앞에 놓여있어서 그냥 시각적으로 받아들이는 것이지만, ‘見ㆍ看ㆍ觀’은 시각 행위의 주체가 시신경에 들어온 사물을 과거의 경험이나 혹은 사회적 배경 등 의도를 가지고 바라보는 것이라 할 수 있다. 둘째, ‘示’는 ‘대상을 드러내 보이다’라는 의미이다. ‘視’는 보이는 대상이 먼저 주어진 다음에 보는 것으로, ‘見’이 보려는 의도를 가지고 본 후 그 결과를 지식으로 삼는 것인 반면, ‘視’는 色境이 놓여있어서 본다는 의미가 강하다고 할 수 있다. Not all minds are alike. The citta (mind/心), manas (thinking/意) and vijnana (heart/識) are indeed all different (as according to the Sanskrit terms). When one is going through a certain kind of mind training, that mind will not just be of one kind but will be categorized into ‘the mind that needs to be trained’, ‘the subjective mind that desires to be trained’, ‘the mind that has been selected for a certain purpose to be trained’, ‘the mind that will face a step by step process when in the training process’, and finally ‘the mind that has reached its ultimate goal through training’. As such, if one was to know clearly the terms such as the citta (mind/心), manas (thinking/意) and vijnana (heart/識) or the ‘unenlightened (不覺), primal awakening (本覺), activated awakening (始覺), semblance awakening (相似覺), proportional englightenment (隨分覺), ultimate enlightenment (究竟覺) which are frequently used in Buddhist scriptures(佛典), it would be of immense help in further grasping and understanding not only the Buddhist scriptures but also the sentences written in Chinese characters. Based on the above cognizance, verbs such as see (見), look (看), view (觀) as one group and show (示), look upon/regard (視) as the other group which are frequently used in Buddhist scriptures were compared in this research paper to reach the following conclusions. First, in the case of ‘show (示), look at (視)’, they are used when the object realm of perception (色境) is put before one for show or one looks at the object realm of perception because it is placed in front of them. On the other hand, the group ‘see (見), look (看), view (觀)’ happens when the protagonist has the intention of wanting to see. Second, show (示) actually means to ‘reveal/expose oneself’ while look upon/regard (視) refers to a situation where the subject of exposure is shown first then looked upon. In short, ‘see (見)’ looks upon the target with the clear intention to see and base the result as one’s knowledge while ‘look upon/regard (視)’ has a stronger meaning in looking upon a subject because the ‘object realm of perception (色境)’ was placed before the protagonist.

구 동양척식주식회사 부산지점(부산근대역사관)의 복합구조 특성

안재철(Ahn, Jae-Cheol) 대한건축학회 2019 대한건축학회논문집 Vol.35 No.10

The Busan branch of the former Toyo Takushoku Co. carried out the same business as a bank at the time of construction. This required an open space of long-span, which had no pillars, on the first floor where many customers frequently visited. In addition, an office space is required in the upper part, and a column is arranged so as to place a corridor in the center. It was designed with modern complex structures for space utilization and structural adaptation. As a result, scientific structural calculations of the modern era began and various structural technologies were introduced, the rationalization and value of various spatial characteristics and their structural design were analyzed from a technical historical perspective in the structure requiring long-span space. The Busan branch of the former Toyo Takushoku Co. is a complex structure with three structures. It is highly valuable as a building that tried to design its structure in a variety of spaces through calculation and introduction of new technology based on the principle of force in modern times.

우암동 소막사주택의 피란기 변용과정에서 브리꼴라쥬 특성 - 피란기 건축재료의 수급 과정을 중심으로 -

안재철(Ahn, Jae-Cheol) 대한건축학회 2022 대한건축학회논문집 Vol.38 No.2

This study aims to chronologically cover the bricolage characteristics of the initial construction of cowshed housing in Uam-dong, the transformation process and developmental changes during the Korean War evacuation period and the social recovery following the Korean War Armistice Agreement. The collapse of the construction industry during this period heavily impacted how specific materials were obtained by refugees, which directly affected how homes were then structurally built. Upon analysis, it was revealed that due to the collapse of the architectural ecosystem in the early stages of evacuation, most materials used were locally gathered within a residential area; these materials included duvets, straw bags, along with wood and soil from the mountains behind villages. Other materials were gathered or by-products were purchased from a nearby American army base and along the Uam railway line. These pertinent details help unveil how building materials were supplied for bricolage amid the social system being disrupted during the Korean War evacuation period.

의미네트워크 분석법을 이용한 근대 건축문화유산의 보존과 활용에 관한 사회적 논의 분석 - 부산광역시 근대건조물 구)한성은행 부산지점(청자빌딩)을 중심으로 -

안재철(Ahn, Jae-Cheol) 대한건축학회 2019 대한건축학회논문집 Vol.35 No.7

In this research, I conducted a semantic network analysis centering on media articles on purchasing, revitalizing, and utilizing the former Busan branch of Hansung Bank, a modern architectural heritage. We sought the most efficient analysis elements for the analysis of the social arguments about preservation and utilization embedded in media articles. For this reason, Degree Centrality measures how many connections the word described in the media article has, and Betweenness Centrality measures the influence that controls the flow of information through correlation I examined. In addition, keyword that express the theme well examined the aggregation structure in each sub-network. In this research, in theoretical terms, it makes sense in that the social discussion embedded in the article of the mass media is grasped empirically through semantic network analysis of words. Methodological aspect is best when it includes nouns and adjectives and the distance between words is more than four words in the analysis of the cohesive structure of the semantic network to determine whether the influence of social discussions is best assessed through the connection between words to media articles.

전후 소막사의 구조적 변화에 나타난 주생활사적 가치

안재철(Ahn, Jae-Cheol) 大韓建築學會 2017 大韓建築學會論文集 : 構造系 Vol.33 No.10

The Cow-shed housing was built as a cow-shed, which was the site of exploitation of Japanese colonial era, and after that, it began to be used as evacuation housing by the refugees at the time of the Korean war. Also, cow-shed housing has important historical value as the background of modern korean history, such as being used as a residence space for low-income urban workers during economic growth. In this process, wooden structural columns were cut or replaced for spatial efficiency. In the long run, the structure of this building is characterized by a complex structure because part of the wooden structure has been replaced by a masonry wall. Also in the roof structure, many structural members have been cut and used for the efficiency of the attic space. These structural changes are quite absurd in the structural aspect. But these architectural activities were valuable in terms of life history in that they were carried out in a limited and special environment by refugees who are nontechnical architects in accordance with the spatial demands of evacuation life at the time.

폐콘크리트 미분말과 산업부산물을 이용한 저온 소성 재생시멘트의 물성

안재철(Ahn, Jae-Cheol),박동천(Park, Dong-Cheon) 대한건축학회 2013 大韓建築學會論文集 : 構造系 Vol.29 No.3

The study for using as recycle the cementitious powder consisting among the waste concrete, which accounts for more than 60%, could be achieved by authors. However, many practical problems that the lack of compressive strength due to internal fine aggregate and becoming free lime due to imbalance of raw chemical ingredient remain. In this study, promote a high quality of play cement with cementitious powder from waste concrete, blast furnace slag and fly ash as sub material to development recycled cement in the way of 700℃ low-temperature heating. As a result, the fluidity test of recycled mortar using recycled cement, the composition of recycled cement to slaking by CaO greatly reduced by sub material added result in increased liquidity. And also, recycled cement with blast furnace slag as sub material is more superior in improvement of compressive strength than without adding cement.

철계 서셉터를 혼입한 시멘트 물질의 마이크로파 가열시 승온특성의 박막의존성

안재철(Ahn Jae-Cheol),김용경(Kim Yong-Kyoung),이성진(Lee Sung-Jin) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.2

This study aimed for the development of the cementitious joint with easy-disassembly and attempted the design for disassembly that used mechanism of the microwave heating. The purpose of this study is to choose a susceptor, which helps raise the heating efficiency with microwave heating, and to evaluate heating effectiveness with microwave heating by analysis of the temperature elevation characteristics. As a result of this study, excellent temperature elevation characteristics is showed by using ferric material as susceptor of cementitious modifier considering the heating efficiency of microwave heating. In addition, iron oxide powder shows the heating efficiency of microwave better than pure iron powder. For that reason, iron oxide powder is very suitable as susceptor for cementitious modifier. The cementitious modifier which used iron oxide powder was able to reach in the temperature that is possible of the fragility of the cementitious material by microwave heating, less than 30 seconds at 700W and 20 seconds at 1800W in the case of S/B1.0, thickness 1mm in oven dry condition.