• Explosives and Blasting
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• v.40 no.4
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• pp.15-26
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• 2022

With the recent increase in old and dangerous buildings, the demand for technology in the field of structure demolition is rapidly increasing. In particular, in the case of structures with severe deformation of damage, there is a risk of deterioration in stability and disaster due to changes in the load distribution characteristics in the structure, so rapid structure demolition technology that can be efficiently dismantled in a short period of time is drawing attention. However, structural deformation such as unauthorized extension or illegal remodeling occurs frequently in many old structures, which is not reflected in structural information such as building drawings, and acts as an obstacle in the demolition design process. In this study, as an effective way to overcome the discrepancy between the structural information of old structures and the actual structure, access to actual structures through 3D modeling was considered. 3D point cloud data inside and outside the building were obtained through LiDAR and drone photography for buildings scheduled to be blasting demolition, and precision matching between the two spatial data groups was performed using an open-source based spatial information construction system. The 3D structure model was completed by importing point cloud data matched with 3D modeling software to create structural drawings for each layer and forming each member along the structure slab, pillar, beam, and ceiling boundary. In addition, the modeling technique proposed in this study was verified by comparing it with the actual measurement value for selected structure member.

• Journal of the Economic Geographical Society of Korea
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• v.26 no.3
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• pp.223-237
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• 2023

The Seoul Onsu Industrial Complex, having been completed over 50 years ago, is an old industrial complex, with deteriorating infrastructure and factory buildings. Despite this, there's a current urban industrial agglomeration centered on the machinery industry in the Seoul Onsu Industrial Complex. This study aims to holistically analyze the physical deterioration of facilities in the aging industrial complex and the characteristics of industrial agglomeration to derive the identity of the Seoul Onsu Industrial Complex. Based on the research findings, the complex is seeing an enhanced urban industrial agglomeration due to the influx of small-scale businesses resulting from concentrated trade networks in the metropolitan area and plot subdivision, permission for noise-producing processes, and the ease of securing highly-skilled technicians. However, this agglomeration coexists with a weakening of the complex's production function, limited innovativeness of resident companies, and non-innovative features resulting from weakened competitiveness in the metropolitan machinery industry. In summary, the identity of the Seoul Onsu Industrial Complex is a 'Non-Innovative Urban Industry Agglomeration', an old industrial complex, witnessing non-innovative agglomeration based on a machinery industry network centered in the metropolitan area.

• Journal of the Korean Institute of Gas
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• v.12 no.4
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• pp.1-7
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• 2008

In the last five years, 36 people died and 79 were wounded because of carbon monoxide poisoning accident. A CO poisoning accident is higher than any other gas accident in the rate of deaths/incidents. Most of these CO poisoning accidents were caused by defective exhaust tube in the old gas boiler and multi-use facility. In this study, the spread mechanism of CO gas released from leakage hole of exhaust tube was analyzed by concentration measuring test. A CO gas leaked form exhaust tube in a building was the highest concentrated near the ceiling. CO alarm sets installation test confirmed that the alarm sets near the ceiling operated first, and the bottom and middle sets operated after $30{\sim}40$ minutes. Through these experiments, the reasonable installation location of CO alarm was made certain and suggested.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.123-123
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• 2017

기후변화의 영향으로 개발밀도가 높은 도시지역은 호우로 인한 피해가 지속적으로 증가하고 있다. 최근, 극한 호우에 의해 발생되는 도시침수의 피해를 저감하기 위해 시설물 대책에만 의존하기 보다는 지자체가 수립하는 공간계획을 통해 토지이용, 건축물 등을 아우르는 종합적인 예방전략 마련이 강조되고 있다. 하지만 지자체 도시계획 담당자가 기후변화를 고려해 방재대책을 마련하는데는 국가 차원의 표준화된 방법론의 부재, 침수해석을 위한 전문적 지식이 요구되는 등의 한계가 있다. 본 연구에서는 지자체가 도시계획에 실효성 있는 방재대책을 마련하는데 직접적으로 활용할 수 있는 도시침수에 대한 상세 위험도 주제도를 개발하고자 한다. 이를 위해, 우선적으로 중장기적인 측면에서 기후변화의 영향과 도시지역의 유출 특성을 고려해 방재계획을 수립할 수 있는 강우 시나리오 기준으로 지속시간 1시간에 대한 재현빈도 30년과 100년을 제시하였다. 기후변화의 영향을 고려한 강우 시나리오 기준에 따라 도시지역 내 내수 외수의 침수발생 원인을 고려해 침수심 지도를 생성하고자 한다. 이를 위해 범용적으로 적용할 수 있는 침수해석 모형인 HEC-RAS와 SWMM을 선정하고, 공간적 제약이 없이 폭 넓게 적용할 수 있도록 모형의 구축 절차를 간소화한 방법을 제안하였다. 간소화된 침수해석 모형 결과를 토대로 강우 시나리오별 침수심 지도를 제작하고, 강우 시나리오와 침수심을 기준으로 위험정도에 따라 Red zone, Orange zone, Yellow zone, Green zone으로 영향권을 설정하였다. 실질적으로 각 영향권에 적합한 도시계획 차원에서의 방재대책 수립이 가능하도록 노출특성과 취약성 분석을 실시하였다. 노출특성은 영향권에 노출된 토지이용면적(m2)과 거주인구수(명)로 평가하고 취약성은 영향권 내 취약한 건축물 수(지하 또는 노후 건축물), 보호대상시설물 수로 평가하였다. 침수 발생이 예상되는 영향권별 노출특성과 취약성 분석 결과를 토대로 위험이 높은 지역(Red zone)은 공간규모를 축소해 상세 위험도 공간정보 주제도를 개발하였다. 또한 위험도가 높은 지역은 작은 공간 단위로 노출특성과 취약성을 분석해 상세 위험도 주제도를 개발하였다. 본 연구에서 개발한 상세 위험도 공간정보는 지자체가 도시계획 수립단계에서 실질적인 방재대책을 강구하는데 활용할 수 있을 것으로 기대한다.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.11 no.6
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• pp.703-710
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• 2018

Although various efforts have been made every year to reduce electric fire accidents such as accident analysis and inspection for electric fire accidents, there is no effective countermeasure due to lack of effective decision support system and existing cumulative data utilization method. The purpose of this study is to develop an algorithm for predicting electric fire based on data such as electric safety inspection data, electric fire accident information, building information, and weather information. Through the pre-processing of collected data for each institution such as Korea Electrical Safety Corporation, Meteorological Administration, Ministry of Land, Infrastructure, and Transport, Fire Defense Headquarters, convergence, analysis, modeling, and verification process, we derive the factors influencing electric fire and develop prediction models. The results showed insulation resistance value, humidity, wind speed, building deterioration(aging), floor space ratio, building coverage ratio and building use. The accuracy of prediction model using random forest algorithm was 74.7%.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.24-26
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• 2012

항만은 해륙교통의 요충지로서 그리고 국토의 균형적인 발전과 지역진흥의 기반으로서 중요한 역할을 담당하고 있지만 노후항만시설 및 쇠퇴공간에 대한 유지 및 보수가 효과적으로 이루어지지 않아 기능의 상실은 물론 재해와 우범화의 대상이 될 수 있다. 특히, 항만의 활성화를 위해 중요한 부분인 항만고유의 기능인 생산 및 물류의 지원과 아울러 소득수준 향상에 따른 풍부한 생활공간으로의 환경 친화적인 정비와 항만재개발이 필요하며, 미래지향적 종합항만공간으로의 기능전환이 이루어지고 있다. 국내 최초로 대규모 항만재개발이 추진되고 있는 부산북항재개발 사업에서도 항만도시의 경쟁력을 위해 국가차원에서의 경관계획을 반영하고 있으며, 해양도시 이미지 개선 및 가치향상을 위한 노력의 일환으로 고유의 자연, 역사, 문화적 자원과 함께 각종시설, 건축물, 상징물, 생태 녹지의 상황과 특성에 맞는 경관조성에 노력을 하고 있다. 본 연구에서는 부산북항재개발 사업에 대한 경관색채계획 사례분석을 통해 경관조성방안에 대해 향후발전방향에 대한 기초자료로 활용 할 수 있으리라 판단된다.

• Korean Institute of Interior Design Journal
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• no.29
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• pp.242-248
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• 2001

Even though the Korean intoner architecture market has constantly developed in the past on the basis of the economic and social growth, it has had a tough time for varied reasons since 1998. Restructuring in the construction industry is required due largely to both the lack of market demand which resulted from the foreign exchange crisis and managerial trouble which is getting worse as time goes by. In actual, as the social necessity for remodeling in skyrocketing, the remodeling is getting more acclaim. That is because old architecture generates a great amount of architectural trash, and it is necessary to look for ways to saute the energy. In the wake of these situations, the remodeling industry is drawing attention as an alternative to the marketable limitations of the existing construction industry. However, it is true that the remodeling market has yet to be activated decisively. Accordingly, the purpose of this paper is to provide a basis for entering into and activating the remodeling market of the interior architecture industry by analyzing the scale and recent conditions of the remodeling sector.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2023.05a
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• pp.331-332
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• 2023

With the aging of buildings, the number and importance of regular inspections of buildings are increasing. The current safety inspection goes through a procedure in which a skilled technician visits an old building, visually checks it, takes a photo, and finally organizes and judges it at the office. For this, field personnel and analysis and review personnel are required. Since the inspection procedure includes taking pictures, a huge amount of data has been accumulated from the time digital photos were used to the present. When a model that can check cracks outside a building is developed using these data, manpower and time required can be greatly reduced. Therefore, this study aims to create a model for classifying cracks that occur outside the building through the artificial intelligence method. The created model can be used as a basic model for determining cracks only by external photography in the future, and furthermore, it can be used as basic data for calculating the size and width of cracks.

• Journal of the Korean Association of Geographic Information Studies
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• v.11 no.1
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• pp.167-177
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• 2008

The Urban Regeneration can improve physical, environment, economy, life and culture of retarded urban area to recover vitality and to recreate residing environment having competitiveness. This study constructed buildings database to investigate deterioration of buildings of each dong that was minimum administrative region classified for administrative convenience, and spatial structure analysis for Urban Regeneration in Busan. Legal standards have not been established yet. Therefore, the study conducted quantitative analysis based on the Law of Urban and Dwelling Environment Improvement as well as the Special Law of Promotion of Urban Reorganization to find out problems of existing legal systems and to make use of investigation results as basic material of Urban Regeneration project in the future. And, the study investigated physical deterioration of buildings, and characteristics and types of the variables such as population, welfare, business entities at each dong, that is to say, basic administration unit of the government through Factor-Analysis.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.1
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• pp.105-110
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• 2014

Korea, old buildings do not currently have earth-resistant facilities, and disaster prevention facilities have some limitation in responding properly to damage arising from natural disaster as they do not reflect recently occurring climatic changes. Accordingly, it is necessary to select vulnerable districts by taking into consideration the possibility of disaster occurrence and the current situation of infrastructures for disaster prevention in order to responding efficiently to future unexpected disasters. For this purpose, national government has recently formed the DB linkage council for disaster prevention under the participation of related agencies and constructed integrated database. But local governments have not properly provided it with basic data necessary to construct database, resulting in the delay of the project. Therefore, it is thought that national government needs to provide them with manpower and financial support.