• 국제초고층학회논문집
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• 제2권1호
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• pp.23-30
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• 2013

This paper explains the Japanese present situations relevant to the fire resistance performance. Performance-based fire provisions was introduced in 1998 for the first time when the Building Standard Law was amended. However, performance-based fire resistance design had been used since long before the official introduction of performance-based provisions. A Comprehensive Technology Development Project of Ministry of Construction from 1982 to 1986 established a technical basis for performance-based fire safety engineering in Japan. A system of calculation methods for fire resistance verification was prescribed in the Ministry Notification in 2000 utilizing the results of this project as a background. This method, referred to as the Fire Resistance Verification Method (FRVM), is the standard method to verify the fire resistance performance of principal building parts such as columns, beams, and walls of steel, concrete, or wood structured buildings. For tall buildings, however, more advanced method for performance verification is often necessary because new building materials or structural systems are often used for these buildings. An example project of tall building owned by a major newspaper company is presented in this paper. Advanced thermal deformation analysis is executed to secure the fire resistance of the building.

• 대한건축학회논문집:계획계
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• 제36권2호
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• pp.63-70
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• 2020

In the ancient Buddhist temple area, various metal artifacts are still excavated. Therefore, the aim of this study is to approach the characteristics of ancient architecture through ancient metal artifacts. First, metal decoration of ancient architecture appears for the purpose of structure, decoration, arson. Then, as the method of wood structure is developed, the application is separated into structural, functional and decorative purposes. In ancient times, metal decoration has reduced the role of structure, but its decorative role has expanded. Second, various metallic ornaments were used on the roof of ancient architecture. As the wooden technology developed, the metal decoration was gradually omitted while applying the curve to the roof. Third, the metal ornaments used on the roof of ancient architectures include the ridge central decoration, roof top decoration, a nine-ring decoration, gable board Ornamental Metal, corner flower decoration, eaves nail, wind bell. And subsequent research requires a terminology that can link the results of archeology and Buddhist art through excavation as a result of architecture.

• 한국융합학회논문지
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• 제6권4호
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• pp.9-14
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• 2015

본 논문은 기타의 목 부분의 형상에 따라 가해지는 힘에 의한 휘어짐의 문제를 해결하기 위한 것으로, 기존의 기타를 보강하여 실제 사용 시, 하중에 취약한 부분을 파악하는 방법을 연구하였다. 본 연구에서는 실제 기타에 적용되는 목재의 물성치를 연구모델에 적용하고 모델링 한 후, 유한요소해석을 수행하였다. 본 논문의 연구를 통해 나온 결과를 사용하여 기존의 기타의 문제로 지적되어온 휨과 파손에 대한 기반자료를 얻을 수 있을 것으로 사료되며 이를 보강 할 수 있는 디자인을 연구하여 그 기타를 개선하고자 한다. 개선된 연구모델에 대한 결과를 토대로 실제 설계에 응용한다면 휨과 파손을 방지하여 내구성을 향상시킬 수 있으며 디자인 면에서의 융합기술로의 접목도 가능하며 미적인 감각을 나타낼 수 있다.

• Journal of the Korean Wood Science and Technology
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• 제28권1호
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• pp.8-17
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• 2000

낙엽송을 이용하여 구조용 집성재를 제조하였다. 핑거 조인트나 라미나의 강도 등의 인자들이 집성재의 강도적 성질에 영향하는 바를 조사하였다. 집성재의 강도적 성질 예측을 위해 입력변수로 라미나의 MOE만을 사용하였을 때는 실측치와 예측치 사이의 차이가 라미나의 개수가 증가함에 따라 커졌는데 이것은 라미나의 성질의 변이가 집성재의 강도에 영향하는 바가 라미나의 개수 증가에 따라 누적되기 때문이다. 따라서, 집성재의 MOR을 예측하기 위해서는 좀더 신중한 접근법이 필요하였다. 입력변수의 영향을 비교하기 위하여 라미나의 MOE와 MOR을 동시에 입력변수로 사용하였다. 핑거접합을 실시한 라미나가 인장측에 배치되었을 때 집성재의 MOE는 라미나의 MOE 값에 상당한 변이가 존재하고 옹이에 대한 자료가 충분치 않아서 약간의 영향을 받았다. 핑거 접합을 실시한 라미나가 인장측에 배치되지 않았을 경우에는 인장측에 배치된 경우보다 더 정확한 예측이 가능하였다. 이러한 결과를 종합하면, 핑거 접합과 옹이를 동시에 고려하였을 경우 좀 더 정확한 집성재의 강도적 성질 예측이 가능할 것으로 판단된다.

• 한국가구학회지
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• 제24권1호
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• pp.60-69
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• 2013

Timber is an eco-friendly material that is suitable for low carbon and green growth, and recently, studies on utilization and manufacture of timber are increasing. Thus, we need a stable supply of wood working materials for the formative element and widespread function of timber. It is necessary to develop the use of timber because it enhances the added value of this material by making the most of it. In this way, skin-timber is an appropriate material for life articles because skin-timber has a variety of functions including the ability for storage use, the beauty of structure, the ability to maintain heat and insulation, and the capability to control humidity. In this study, I developed household items using skin-timbers that are made up of circular columns and square columns of pine, larch, and yellow popular. The circular and square columns have an inner hole that is approximately 90% of the external structure's width. I intended for the concept of these designs to display creativity considering functionality and productivity. These items are life articles and furniture for modern people. They are eco-friendly products that are varnished with traditional lacquer and natural oil. According to the result of this study, skin-timbers are made of domestic pine, larch, and yellow popular and are resource of furniture, household items, and woodcraft. I believe skin-timber is not only a useful material for processability and design applicability, but it also has the capability to be a multifunctional and high value-added material. Also, if the standards, such as cortex thickness, outside diameter, and length, of skin-timber are producted diversely, I believe skin-timber can be have more the possibility of industrial products' development.

• 대한건축학회논문집:구조계
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• 제36권4호
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• pp.153-161
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• 2020

This study investigates the recycling potential of demolition waste (DW) according to building structure, while considering economic aspects. For that, this study surveyed 1,034 residential buildings to collect reliable information on demolition waste generation rates (DWGRs). This study suggested a method for operational cost calculation for each stage and carried out an inventory analysis. The economic value of recycled DW materials was also calculated. And then, the recycling potential(RP) was calculated by building structures and waste types. RP by building structure was low (27-40%), and RP was found in the order of masonry-block, wooden, RC and concrete-brick. By type of DWs, the RP of aggregates was considerably lower than 7%, and DWs such as wood, plastics, and metals showed more than 100% RP. Considering the results of this study, In order to improve the RP of buildings and DWs, the diversification of products that recycled waste like aggregates (i.e., mortar, concrete, bricks, blocks, tiles) and the development of high value-added products are considered to be the most urgent problems. Based on the above RP results, this study proposed a more advanced method for life cycle assessment of buildings and demolition waste.