• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.231-232
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• 2022

건설 현장이나 일반 제조업 현장은 작업자의 고소 위치에서의 작업시, 필요한 특정 장소로의 접근을 위한 임시 구조물을 설치하는데 이를 가설비계라고 한다. 이러한 가설비계는 작업자의 안전 통행과 작업을 위한 받침대 역할, 장비나 공구, 자재를 임시 적치하기 위한 장소로 활용되는데 일반 건축물과 중후장대한 조선소 블록 제작등에 필수적으로 사용된다. 하지만 가설설비라는 특성으로 비계와 관련된 연구가 부진하고 사업적으로 참여하는 사업주 또한 진출을 가볍게 생각하고 있으며 해당 공사에 임하는 작업자의 산업으로의 진입문턱도 낮은 등으로 시공 품질이 떨어질 우려가 매우 높다. 또한 설치후에는 품질검사가 어려워 작업자의 숙련도나 진정성 등에 의한 주관적 작업 결과물이 설치된 시설물을 사용하는 주변 작업자에게는 불안전 요인이 되기도 한다. 이에 작업자의 숙련도나 주관적 판단에 의한 가설 구조물 설치를 회피하여 안전성을 높이기 위한 방안이 연구되어 왔는데 이것이 시스템비계이다. 이러한 시스템비계에 대한 사용성을 확대하기 위해 국토교통부와 고용노동부등의 정부기관에서는 여러 가지 제약과 동시에 장려정책을 제시하고 있으나 공적 발주나 일부 대기업그룹 외의 중소 현장에는 그 확산 속도가 높지않은 편이다.

• Archives of design research
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• v.18 no.2 s.60
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• pp.315-324
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• 2005

This research aims to investigate evaluation framework of environmental formative works that are regulated by law in urban space, and to suggest the directions of improving the framework for better city environments. The concept of environmental formative works in urban space was identified and social situations and factors including visitors and the cognitive process of urban environments, were analyzed. This research suggests a new method based on the analysis of existing regulations and problems of environmental art or formative works. The public regulations and evaluation methods of the Korean major cities including Seoul, Daejeon, Busan and Gwangju, were examined on environmental formative works. The objective was to suggest an evaluation framework for creating human values of urban culture environment instead of focusing on the matters between the owner of the architecture and the artist of formative works. By identifying socio-cultural value of art decoration related regulations and improving the level of the public formative art evaluation scheme, this study helps addressing the administrative problems and constructing a conceptual framework of evaluation to improve urban culture environment for both human and environment.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.868-871
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• 2008

Remodeling is an architectural activity that transforms the existing state of specific building which has been aged and clichedinto new state overcoming those aged and cliched state. Remodeling can be a means to increase building's physical lifecycle and also a countermeasure to cope with the changes in use that are from social demand, use and technical development. The performance evaluation on the remodeling tenement shall be done by understanding the performance and state of the building before and after remodeling and then it shall represent the improvement in performance objectively by comparing the differences before and after remodeling. In this aspect, we performed basic research to conduct performance evaluation on the remodeling tenement by comparing and analyzing the performance evaluation and performance certificate systems of Korea and Japan in order to suggest objective evaluation system on the change of tenement building before and after remodeling.

• Journal of the Korea Convergence Society
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• v.12 no.11
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• pp.291-299
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• 2021

Recently, due to environmental problems caused by densification and high rise of urban areas, interests in air flow is increasing and appropriate shape and layout design of buildings is required. Therefore, in this study, we intend to propose an experimental method that can observe the air flow around a building using thermochromic pigment. Thermochromic pigments have limitations in observing precise temperature changes due to the characteristic that the color changes only with respect to a specific temperature, but they have the advantages of easy configuration of experimental equipment and short time required for experiments. In this study, the air flow tendencies around a building was examined by performing CFD analysis for a simple model and then compared with the thermochromic experiment results in order to review the usefulness of the proposed experimental method. As a result of the experiment, it was possible to observe the formation of separated flow and vortex region generated by buildings using the charateristics of thermochromic pigment and it was confirmed that the proposed method can be useful for buildings design and urban city planning.

• Korean Journal of Construction Engineering and Management
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• v.19 no.6
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• pp.3-13
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• 2018

The formwork cost amounts for a significant proportion of project construction costs. It costs 10-15% of the total construction cost and 30-40% of the frame structure construction cost. In addition, the formwork collapse accidents are frequently causing deaths in the construction industry, and thus, is known to be of relatively high degree of risk. As so, the accuracy of structural calculation and quantity take-off when planning the formwork in a construction project are a very important matter. Accordingly, this study develops a BIM based formwork design prototype, that enables the construction manager to optimize the design through applying the proposed new IFC entities associated with the formwork design. The approach proposed in this study is expected to support the construction manager with accurate quantity calculation and rapid planning and construction. Since this study considered specific small-scale buildings using Euro-form and show the possibility of utilizing BIM entities in the formwork design process, further research is recommended towards the limitations in applying the system to other types of formworks.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.213-223
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• 2018

This study assessed the maintenance plan of the Shimbashi-Toranomon Development Area in Japan, which has recently been completed using the three-dimensional road system. In the main relevant law system, a three-dimensional road system, which enables the construction of buildings above and below the road, was applied. The specific construction regulations applying the financing power and knowledge of private business operators were applied. In the development district, city maintenance guidelines were established, and housing and shopping malls were regulated. This purpose was to promote change, unity of distance, effective use of land, and continuous urban revitalization with charm and vitality. The main features of the maintenance plan were accessibility and greenery, comfort and a sophisticated design, and a maintenance concept utilizing historical buildings and road space through the participation of local residents and the opinions of related committees. In addition, in the case of the construction of the upper and lower roads, the construction restrictions were relaxed, and the separation of the roads and the undergrounding of electric poles were promoted. The main aim was to improve the convenience of the residents and produce a pleasant road landscape.

• Journal of the Korea Institute of Building Construction
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• v.21 no.5
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• pp.483-493
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• 2021

Urban overcrowding has created an explosive supply and demand for high-rise buildings. High-rise buildings are contributing to enhancing the image of the city by serving as focal points, but due to the stack effect, malfunction of elevator doors, difficulties in opening and closing the doors and windows of the outer wall, smoke and odors spreading to the upper floors, noise, energy loss, fire and pollutants have been causing various unexpected problems such as rapid spread of fire. This study classified high-rise buildings according to their vertical zoning, analyzed the causes of and solutions to the stack effect, and derived design and construction methods. Through the initial plan to block the outside air and securing airtightness through precise construction, we sought ways to secure the airtightness inside and outside the building by actively blocking the airflow from the lower floors. In addition, the facility solution can be a measure to reduce the specific phenomena caused by the stack effect, but it should only be applied to the minimum extent because the potential for secondary damage is high. This study emphasized the need for systematic stack effect management by suggesting design and construction measures for each vertical zoning of the causes and countermeasures of the stack effect. It is expected that this study will be helpful not only for design and construction, but also for building maintenance.

• Fire Science and Engineering
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• v.22 no.1
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• pp.54-60
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• 2008

The occurrence of fires in heavily populated multiplex buildings is a serious concern. It causes a great threat to many people and a serious social problem. Whenever this kind of fire happens, the authorities are busy preparing partial countermeasures to control the crisis situations. Luckily, the government has enforced a special law regarding safety supervision of majority-used buildings to prepare the basic countermeasures for the buildings' safety. Recently, the multiplex buildings which have multi type compounds have increased in size by getting bigger and bigger. As there are many people who would need to escape and the complicated structures like mazes in buildings of this type, it is not only difficult to prevent a fire but also easy to cause a large loss of lives. For a better fire safety supervision of the buildings, there needs to be passers and owners' good sense of safety, fire proof of the buildings and education of the fire authorities.

• Fire Science and Engineering
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• v.17 no.3
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• pp.1-6
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• 2003

In this study, it reviewed about evacuation performance of a specified Office Building. assessment tools is FAST 3.1.7 (Estimation of Flash Over, Estimation of Layer Height Down Flow Time), SIMULEX 32-bit (Estimation of Evacuation Time), JASMINE 3.25d. (Smoke Flow Assessment of a specified time) Result from Fire Scenario # 1, Flash Over is not generated in Compartment. Evacuation Time is estimated 25.2 sec by SIMULEX 32-bit. layer height until this time (25.2 sec) was estimated 2.4 m by FAST 3.1.7. After ignition until this time (25.2 sec), smoke was not release to the a corridor. In consequence, We concluded that people in building are completing the safe evacuation without the damage of smoke. Result from Fire Scenario # 1, Flash Over generated 6 min 33.2 sec in Compartment. Evacuation Time is estimated 1 min 25.5 sec by SIMULEX 32-bit. layer height down flow time is 1 min 40.8 sec by FAST 3.1.7 and 5 min 23 sec by theoretical calculation. Also, total building evacuation time was estimated 2 min 26.6 sec. After ignition until this time (2 min 26.6 sec), smoke released to the a corridor but it amount was few little. Therefore, generated smoke in compartment not effected to the people in buildings.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.10B
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• pp.1252-1257
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• 2011

In this paper, efficient functions for audio spectrum mapping with visible spectrum are proposed. Through mapping overall hearing frequency band with visible frequency band, emotional lighting might be possible. We propose a basic linear mapping function and non-linear mapping functions emphasizing specific audio frequency bands. For the algorithm implementation, spectrum analysis method and filter method are introduced. Especially, in this paper, a prototype LED lighting equipment using the digital filter method is implemented. The proposed lighting method can be applied to many LED lighting area using music.