• Structural Engineering and Mechanics
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• v.41 no.3
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• pp.379-393
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• 2012

Of the various methods of splicing reinforcing bar in reinforced concrete structure, mortar-filled sleeve reinforcement splice offers diverse benefits, not only in terms of structural performance but also for the construction process. Consequently, after the mortar-filled sleeve splices have been developed in recent years, research and development on these splices has been actively carried out, in order to evaluate its macro structural performance, such as its strength and stiffness, with the aim of enabling this system to be applied to construction in the field as early as possible. However, to make a proper evaluation on the overall structural performance of the mortar-filled sleeve reinforcing bar splice, it is of critical importance to understand the lateral confining action of the sleeve, which is known to affect the bond strength between the embedded bar and mortar in the sleeve. Accordingly, in this study, an experiment of monotonic loading and cyclic loading was conducted with a full-sized mortar-filled sleeve splice attaching strain gauges on the sleeve surface with experimental variables such as development length of bar, etc. Based on the test results, the effect of the lateral confining action of the sleeve was analyzed and considered in terms of the bond strength between the bar and mortar in this splice.

• Architectural research
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• v.21 no.2
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• pp.31-39
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• 2019

Inspired by the success of the High-line project in New York, The Seoul Metropolitan Government launched a project to convert an overpass near Seoul station into a pedestrian park. Seoullo 7017 went through instant success after its opening in May 2017; however, there is a continuous controversy over its long-term impact as shown in the exemplary cases like the High-line project. This study aims for quantitative investigation through the comparative analysis between Seoullo 7017 and the High-Line in the perspectives of spatial configuration. Space Syntax was chosen as the analysis method for this research. Integration (3) in Space Syntax is known to have a high correlation with pedestrian volume; thus, by using this method, spatial structure was analyzed by comparing the statistically verified results of changes in the spatial structure of the Highline with those in Seoul. The results indicated that the influence of Seoullo 7017 was less than that of the High-line in terms of spatial configuration. The reason for this difference is spatial configuration between Manhattan and Seoul. The High-line is located in Manhattan which has an urban grid structure, whereas Seoul has non-geometric urban structure, the neighborhood unit in Korea. Also the center of the overpass isn't connected well with its surroundings.

• Journal of The Korea Institute of Healthcare Architecture
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• v.28 no.3
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• pp.27-38
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• 2022

Purpose: This study tried to present basic data for establishment of facility guidelines and facility certification standards for the comprehensive prevention of infectious diseases in buildings. Methods: This study examines the concept of architectural countermeasures for the prevention of infectious diseases through literature reviews, and then classifies and organizes the countermeasures by viewing the infectious diseases hospitals as the top-level facility in terms of responding to infectious diseases. Results: At first, this study categorized and organized infection prevention countermeasures of infectious disease hospitals, which are the highest level facilities in terms of response to infectious diseases. And by presenting the concept of step-by-step setting of countermeasures for general buildings such as welfare facilities and multi-use facilities, which are lower-level facilities in the aspect of prevention of infectious diseases, this study tried to present basic data for establishing facility guidelines and facility certification standards for comprehensive prevention of infectious diseases in buildings. Implications: In the future, it is expected that spatial changes for the prevention of infectious diseases will spread to general constructions such as public buildings, private buildings, and multi-use facilities, and comprehensive infection prevention facility guidelines are needed.

• Journal of the Korea Institute of Building Construction
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• v.14 no.1
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• pp.61-67
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• 2014

As industry advances, the production of industrial sulfur is increasing every year. Therefore, this study intended to investigate the modified sulfur distribution and compressive strength characteristics of modified sulfur mortar based on the mixing method and curing conditions by adding modified sulfur with a melting point of approximately $65^{\circ}C$ in order to provide basic data for the application of the modified sulfur to the mortar or concrete. The results of the experiment showed that the mixture of fine aggregate and cement with water, followed by the addition of modified sulfur, would be most advantageous in terms of fluidity and strength. The results of EDS analysis also showed that the distribution of sulfur was the best. In terms of the curing conditions, the highest compressive strength was achieved through water curing and air dry curing at $20^{\circ}C$. However, it was found that the long-term strength was adversely affected by curing at over $40^{\circ}C$.

• Journal of architectural history
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• v.13 no.2 s.38
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• pp.39-55
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• 2004

In terms of the way we perceive the world, the history of human beings might be said to be a history of two incompatible forces -'science' and 'myth.' Until today, both indispensable aspects have made human existence possible and characterized human culture. Nonetheless, an essential definition of myth has never been clearly explained. What is the general philosophical thought about myth? Current well known interpretations are so called Enlightenment and Romanticism of myth, which both has same criticism that they has not generally considered myth in terms of its technical function or specified contents. One who overcomes the limit of two current extreme beliefs on myth and also who concerned more with the ultimate origin of myth and its relation to the structure of poetry than the source of its vital accomplishments is philosopher Hans Blumenberg. For him myth is an artificial means and an answers to overcome the 'absolutism of reality.' On this point, the research concerns basically two issues. One is to investigate the functional and structural characters of myth through philosopher Hans Blumenberg's anthropological reflections. The other is to analyze architect Tadao Ando's works and thinking. The intention of the paper is not only to explore the relationship between philosophical theory of Blumenberg and Ando's architectural works, but also to suggest a new critical understanding on architecture from mythological point of view. I also expect that this research will suggests a concrete theoretical idea for constructing and construing artistic form and cultural space.

• Korean Journal of Construction Engineering and Management
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• v.17 no.1
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• pp.92-100
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• 2016

Many research efforts have made on various fields to develop a system which is able to process diverse data in terms of efficiency and accuracy as well as minimizing the error in data-processing. As known, it is obvious that procurement is crucial process for the plant projects due to its importance and impact on the performance. It is strongly required to develop an effective metadata system to assist optimal controlling data for the logistics discipline of procurement processes in plant projects. Therefore, the main purpose of this paper is to apply a metadata system for logistics of the plant projects. The suggested technical module is tested using sample data and evaluated its performance in terms of accuracy and running speed. The results of this research will be extended to the other processes of plant projects in order to achieve a ultimately process-based life-cycle plant project information management system

• Journal of architectural history
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• v.3 no.1
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• pp.161-172
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• 1994

This is part of a study on the origin of modernist forms and settings. Forms in Modern Architecture are totally new as though they seemed to be originated from some remote culture. Archaeological studies and Laugier's primitivist attitude to the classical architecture provided a way leading, in the end, to pure structures and abstract forms. An application of the classical elements was combined with the ultimate image of nobility, simplicity and rationality. What the seventeenth and eighteenth century theorists realized in the ruines of the classical structures were not the ones with their original organic vitality but the deteriorated, naked and abstracted ones. The essence of the classical structures has been the one of the main references of the modern white architecture. Ration and Nature were the quintessential terms in the design process of the Enlightenment architects of the late eighteenth and nineteenth centuries as they were in the twentieth century architecture. Pure geometric and symbolic forms were new inventions for the new revolutionary age after the development of architectural Styles, successive until Baroque and Roccoco, ceased to go on to the next phase. Many of their buildings appeared so modem in character, for they were omitted all but the essential structure and decoration. Other sides of rationality in the pre-modern age were evolved in terms of the paradigmatic research and the logic in structure. Durand developed a systematic typological approach to the forms. Geometry was the basis of his designs and his illustrations resembled endless simple geometrical problems. One of the other rational approaches was mainly developed by Viollet-le-Duc. To him, Gothic architecture was the model in which each members functioned actively and exerted counterpressure and the Middle Ages invented new fantastic forms. The several ways of rational approaches in architecture were led to the 'tabula rasa' planning in modern architecture. Nature was remained untouched and not deformed as Ledoux's houses in the $H{\hat{o}}tel$ de $Th{\acute{e}}lusson$ were setted on informal gardens. It is part of the modem image that Nature flows or interpenetrates through the white prisms of the strictest classical purity and machines.

• Journal of architectural history
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• v.19 no.6
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• pp.99-120
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• 2010

According to it, a final goal of this study sets up 'Renovation of the Red brick architecture' and development of theoretical foundation and substantial conservation about Red brick architecture through historical records must be settled without delay. Firstly, it analyzes related terminology and adjusts brick architecture's history and features for architectural authenticity about Red brick architecture. It would study production and construction process of brick in korea. From analysis of records, brick of traditional meaning is 'Jeondol' and western brick of modern meaning is 'Red brick'. 'Brick' defines a common designation. This study shows definition of words based on documents published until 19th century and a korean language and architecture terms dictionary. In view of this results, the meaning of brick which combines different types extensively uses 'Chu', 'Jeon', 'Byeok' according to the purpose of use and the current of the times. In case of 'Jeon', it uses jointly different types such as '塼', '磚', '甎'. but '塼' is frequently used. Even though these words like 'byeok' used individual or combination types until the late 19th century, there is no use because of japanese terms in japanese colonial. After liberation, it was the term of the traditional brick. Brick is generally used through modern times. In an unabridged Korean language dictionary, it defines this term as orthodox korean '壁乭' and '?乭'. At that time of japanese colonial, 'Yeonwa(煉瓦)' used in combination with brick. Due to influence it, it partly uses until now but it is not in common use. Also, a Korean language dictionary contains transcription of 'Yeonwa' with same definition as 'Byeokdol'. In the other side, it results from translating japanese into Korean. It would make exact definition of 'Yeonwa'.

• Journal of the Korea Institute of Building Construction
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• v.21 no.2
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• pp.141-148
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• 2021

In this study, the characteristics of the cement mortar replaced with fly ash and ground granulated blast furnace slag generated during circulating fluidized bed combustion method and pulverized coal combustion process were investigated. As a result of the study, when mixed with circulating fluidized bed combustor fly ash and pulverized coal combustion fly ash, it is advantageous not only in terms of strength development but also in terms of durability. The circulating fluidized bed combustor fly ash contributes to the improvement of initial reactivity, and the pulverized coal combustion fly ash is involved in long-term strength development through pozzolanic reaction. Therefore, it can be seen that the mixed use of circulating fluidized bed combustor fly ash and pulverized coal combustion fly ash acts as a complementary factor for cement mortar substituted with ground granulated blast furnace slag.

• Journal of the Architectural Institute of Korea Planning & Design
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• v.34 no.6
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• pp.23-30
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• 2018

Gordon Cullen, who tried to understand urban landscapes in terms of visual attention, introduced a concept called 'Space and Infinity' in his book 'Townscape'. According to him, urban images like infinity spreading across the sky are more effectively created when we happen to see an open space while walking along a ground-level street than when we look at the sky. This study aims to quantitatively examine if urban observers pay more attention to spaces like pilotis on the bottom of a building. Thus, this study collected observers on actual urban landscape images and partially-edited images and conducted an experiment by adopting Eye-movement Tracking to find out if they actually pay more visual attention to a space like pilotis. This study selected a total of 50 people as research subjects and divided them into two groups. Image 1 was shown to one group, and Image 2 with the pilotis space edited was shown to the other group. As an experiment to find objective evidences on Gordon Cullen's 'Space and Infinity', this study analyzed difference between Image 1 and Image 2, and it was found that the domain of pilotis showed a value five times higher than the average visual attention since it attracted much visual attention although it was very small in area. That is, it has objectively clarified that people get most fascinated with a place with infinite images in the background like a pilotis space out of all the urban landscapes as Gordon Cullen's theory. In addition, the differences in visual concentration of pilotis space by sex, by subject was examined, and there was no significant difference in visual concentration of pilotis space by gender. As a result of examining the difference of visual concentration by classifying the subjects into architectural related major, the major group showed higher frequency of viewing than the non - major group.