Transformation of the Urban Tissue and Courtyard of Residential Architecture: with a Focus on the Discourses and Plans of Paris in the 20th Century

한지형 Architectural Institute of Japan 2015 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.14 No.2

Treatment of Western Wooden Roof Trusses in Early 20th Century Korea

Kim, Mi-Yeon,Kim, Tai-Young,Park, Chang Beom Architectural Institute of Japan 2009 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.8 No.1

<P>As a result of investigating 16 architectural technical books and 72 buildings of modern architectural properties, this paper attempts to illustrate the various treatments of Western wooden roof trusses mixed with Korean roof elements in early 20th century Korea. During this time, new styles such as king post truss, queen post truss, wood-steel composite roof truss, and other roof structures were introduced; which resulted in a mixed style of wooden roofs that used braces, like a strut, in traditional Korean roof structures with a horizontal collar tie in the Western style for the purpose of increasing rigidity. Other changes also appeared in the various types of joint details such as rafter joint, principal rafter joint, and eave details. Korean carpenters tried to accommodate traditional elements and new western style systems in the structural aspect of roof construction. Through the extent to which the findings can be specified for some treatments in the historical and technical standpoint of Korean modern architecture, implications are briefly considered for a unique Korean roof shape in the process of modernization.</P>

A Study on Innovation in Technology and Design Variation for Super Tall Buildings

Kim, Hyeong-Il,Shin, Sungwoo Architectural Institute of Japan 2011 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.10 No.1

<P>The paper presented Design Variation and Technology for Super Tall Buildings, the topic presented in the 12th International Symposium of Korea Super Tall Building Forum by Hyeong-il Kim. In this paper, author review examples of technological innovations in tall building design, illustrating the interaction between architectural form and design tools. It also traces current approaches in architectural form generation and possible design solutions. It is a multidisciplinary problem and an integrated work that involves engineering, architecture, state-of-art construction technology and digital design tools. The study will show a clear linkage of generative design encouraged by technological innovations to design problems in tall building design practice, in addition to its diversely effected results by computerized design tools and construction using CAD/CAM technology.</P>

Fire Resistance of the Korean Asymmetric Slim Floor Beam Depending on Load Ratio

Park, Sooyoung,Kim, Hyungjun,Kim, Heungyoul,Hong, Kappyo Architectural Institute of Japan 2011 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.10 No.2

<P>In Korea recently, interest is increasing in slim floor systems that have superior structural performance and fire resistance. This paper contains the results of tests to confirm the fire resistance behavior of the composite asymmetric slim floor beam. The fire resistance behavior was analyzed using the finite element program ANSYS and the finite element models were validated against the test results. The validated thermal and structural models were used to predict the fire resistance of the Korean asymmetric floor beam and the average temperature of the steel bottom flange depending on load ratio changes. As a result, the 346ASB and the 350ASB were found to have 60 minutes of fire resistance when their load ratios were under 0.47 and 0.48 respectively without additional fire protection. Also, the authors have set the average temperature of the bottom flange, which has a direct impact on the ASB system, as a limiting temperature that enables gauging of its fire resistance as a table according to the load ratio, and presented the limiting temperature as a regression equation according to the fire resistance time.</P>

An Experimental Study on Thermal Damage and Spalling of Concrete Under Loading Conditions in a Tunnel Fire

Kim, Hyung-Jun,Kim, Heung-Youl,Lee, Jae-Sung,Kwan, Ki-Hyuk Architectural Institute of Japan 2011 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.10 No.2

<P>While fire outbreaks in tunnels are not as frequent as those in other structures, temperature rises up to over 1,000ºC within 5 minutes upon the outbreak of a fire in a tunnel due to its semi-closed structure. Temperature rise in a concrete structure caused by a fire under constant load leads to deterioration in strength, accelerates deformation and finally results in collapse. In this study to identify structural damage caused by a fire in a tunnel, fire tests were conducted using a heating furnace that satisfied the KS F 2257-1 and EFNARC regulations to evaluate the thermal damage to a tunnel concrete lining. The two objects of the test were: 1) to identify the thermal damage to concrete lining associated with fire intensity 2) to evaluate the characteristics of spalling and failure of concrete lining associated with load ratio. The range of thermal damage under the ISO fire, heating rate of 1ºC/Sec., MHC fire<SUP>3)</SUP> and RWS fire<SUP>3)</SUP> was 30mm, 20mm, 100mm and 50mm, respectively. The depth of spalling in the RWS and MHC fires was 30mm. Spalling was observed under unstressed conditions, while it was not observed under 20 ~ 40% loads because of the smooth flow of vapors enabled by micro cracks. Under 70% load, the rapid spread of cracks caused failure during 10 minutes of heating.</P>

Formation and Transformation of Japanese Migrant Fishing Village Colonies in Korea

Park, Chung-Shin,Kim, Tai-Young Architectural Institute of Japan 2011 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.10 No.2

<P>This study aims to clarify the formation and transformation of Japanese migrant fishing village colonies in Korea. The subjects for this study include the port settlements of Jangseungpo and Guryongpo in Korea. The findings from this study can be summarized as follows. The spatial form of Japanese migrant fishing village colonies was basically formed on the road system based on lanes perpendicular to coastal roads parallel with coastal curve lines in a type of round bay. This road system became the foundation to form the pattern of lots into a trapezoidal shape for the inside of a house. The existing Japanese style houses can be divided into those that functioned exclusively as residences and those as shop houses. They were constructed with their inner space based on a module of 3.6m (12 Korean Cheok). Features resulting from enlarging or rebuilding by Koreans after their liberation can be divided into three categories such as the expansion of a residential space to the back of a site, change of an existing store to residential use, and the integration and segmentation of individual rooms. Especially, the integration and segmentation of rooms can be said to represent the most important element related to the transformation of the life of Koreans with their different lifestyles. In addition, the segmentation of rooms is thought to be a characteristic of the remodeling of tatami rooms as the living space in a Japanese style house into Ondol rooms as the lifestyle for Koreans.</P>

Simplified Prediction Method of Stack-Induced Pressure Distribution in High-rise Residential Buildings

Jo, Jae-Hun,Seok, Ho-Tae,Yeo, Myoung-Souk,Kim, Kwang-Woo Architectural Institute of Japan 2009 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.8 No.1

<P>This paper presents a simple prediction strategy for estimating the pressure distribution in high-rise residential buildings, using key parameters that affect the magnitude and distribution of stack pressure. The strategy is composed of two procedures: first, the stack pressure is predicted from parameters such as the height of the elevator shaft, the location of the neutral pressure level for each shaft, and the interior temperature of each shaft. Then, the pressure distribution of each floor is calculated using the equivalent leakage areas of the exterior and interior walls, by which finally the pressure difference across the exterior walls can be estimated. To verify the feasibility of this strategy, the predicted pressure differences across exterior walls were compared to measured data of a high-rise residential building with multiple elevator zoning. The results show that this strategy can predict pressure distribution quickly with satisfactory results for both the architectural designer and HVAC engineer.</P>

Risk Response Analysis Model for Construction Method Using the Forced-Decision Method and Binary Weighting Analysis

Lee, Jongsik,Chun, Jaeyoul Architectural Institute of Japan 2009 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.8 No.1

<P>Although the selection of a construction method for each type of work is an important factor in determining the quality of a building, the construction duration, costs, and methods are currently being selected according to the subjective judgment of the person in charge, without sufficient consideration of the characteristics of the work type. As a response to this issue, this study proposes a process model to support decision making when selecting the most suitable construction method for major types of construction work. The study used the risk response level model, which connects the conditions of the order and the site, the constructability of the type of work within the site, a review of the economic efficiency of the work site, the forced-decision method, and binary weighting analysis in the construction planning phase. As a result of the application of this model to the construction method selection process for the construction of soil-retaining walls, the factors to be preferably considered in the field cases were analyzed in the order of the environmental, ground, design, construction, structural, and site conditions. Further, the risk response level of each construction method was calculated via risk response level analysis, subject to four applicable construction methods.</P>

A Conceptual Model of Intelligent Program Management Information Systems (iPMIS) for Urban Renewal Mega Projects in Korea

Kim, Ju-Hyung,Yoon, Ja-Young,Kim, Kyung-Hwan,Kim, Jae-Jun Architectural Institute of Japan 2009 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.8 No.1

<P>This paper is about intelligent Program Management Information System (iPMIS) to support decision-making and management of urban renewal mega projects over their life cycle in Korea. Program management focuses on soft issues i.e. benefits, stakeholders, and governance. A challenge is the diversity of urban renewal projects in terms of process and organization structure. The authors clarify the general requirements of systems to support program management while coping with diversity as follows: openness, clearness, convenience and consistency. As solutions, the authors present a conceptual model for iPMIS featuring the following characteristics: a web-based platform in which general modules and external integrated Geographic Information System (GIS) with decision support logical models are operated; interfaces; cooperative operating IT and IS in urban planning and construction; and a protocol for managing data cooperatively at the level of nation, district, project and facility. Two main unique features are: a user-created ontological process map that provides the operation scenario and menus of the iPMIS; and plug & play techniques by which modules are selected and then operated immediately. These core concepts have been implemented as a prototype system and have been applied to a real construction project. The evaluation result shows that this technique can reduce systems implementation time by 90%.</P>

Valuation on the Intangible Benefits of EVMS using CVM

Kim, Kyong Ju,Kim, Kyoungmin,Kang, Ki Yong Architectural Institute of Japan 2010 JOURNAL OF ASIAN ARCHITECTURE AND BUILDING ENGINEE Vol.9 No.1

<P>There has been a lot of controversy about whether the return on IT (Information Technology) is adequate. While the number of articles on IT evaluation has been substantial, limited attention has been given to the value of an intangible benefit. This paper aims to suggest an approach to putting a financial estimate on the intangible benefit of IT applications. The authors' chose a sample system for the evaluation and utilized the contingent valuation method to quantitatively measure the intangible value. Then, a valuation and analysis model were suggested for the quantitative valuation of the intangible benefit from IT adoption.</P>