• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2007년도 정기 학술대회 논문집
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• pp.763-768
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• 2007

In construction of RC buildings, the quality of shop and detail drawings is very essential for the quality and safety of buildings, Nevertheless, most of thess works are left to site workers and the requirements about bar detailing such as anchorage and splice have been done without rational design and engineering. The purpose of this research is to develop a computer aided drawing system of rebars for RC buildings. The system is based on an integrated structural design system, that is SDP. SDP manages an engineering database for structural design information. It provides all the information needed to draw rebar drawings. The drawing system consists of three modules, 1) Structural Plan Drawing System, 2) Shop Drawing System, and 3) Detail Drawing System. It is expected that not only the productivity of detail drawing works but also the quality and safety of buildings will be improved using the rebar drawing system developed in this research.

• 전자공학회논문지 IE
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• 제49권1호
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• pp.12-17
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• 2012

유비쿼터스 기술의 발전과 더불어 다양한 응용 분야가 대두되고 있으며 특히 건설 현장 분야는 유비쿼터스 기술 및 시스템을 도입 하였을 때 많은 기대효과를 얻을 수 있는 분야이다. 건설 현장에는 항상 많은 위험요소가 존재 하며 특히 추락 사고가 높은 발생 비율을 차지하고 있다. 이러한 사고를 방지하기 위해서 안전교육 및 안전장비 착용 등 다양한 노력을 기울이고 있다. 본 연구에서는 무선 회로 (TOA, RSSI)를 구성하여 작업자의 안전정보 및 위치정보를 실시간으로 모니터링 할 수 있는 시스템을 설계하고 제작하여 측정하였다. 산업용 장비에서 많이 사용되는 ATmega128 MCU를 사용하였으며, 무선 회로를 위해서는 나노트론사의 NanoPan 5357 모듈과 TI사의 CC2500 칩셋을 사용하였다. 또한, 주변환경 정보를 취득하기 위해서 3축가속도 및 압력 MEMS센서를 적용하였다. 이를 통해 작업자의 이동여부 및 고도정보를 판단할 수 있도록 시스템을 개발하였다. 응용소프트웨어는 NI사의 Labview 소프트웨어를 이용하여 개발을 진행하였다. 작업자가 위험지역에서 안전장비(안전고리)를 착용하지 않을 경우 서버 관리자와 작업자에게 경고 알람을 울리도록 시스템을 개발하였다.

• 한국산업보건학회지
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• 제10권1호
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• pp.179-207
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• 2000

Hazardous organic solvents management as prescribed by presidential decree in Korea is reviewed. The status of import, manufacture, and circulation of organic solvents was investigated. Problems inherent in the management of organic solvents in the electroplating, metal degreasing, and dry cleaning industries were discussed. The chemical substance management system in Korea was compared to those of foreign organizations. A walk-through check list was developed and then used to assess the actual conditions and potential hazards of chemical substances in these industries. The questionnaire could be used to develop a chemical management system and protect workers from hazardous substances. Based on the results of the site survey, MSDSs were not integrated appropriately into the workers education and were not readily accessible to employees. In the case of the dry cleaning industry, the new dry cleaning solvent used as a substitute includes a lot of potentially hazardous organic solvents. This research is preliminary. It is recommended that a national survey be performed to better identify the current situation. Because chemical substances are regulated by thirteen laws in seven executive branches, management systems often overlap, resulting in ineffective control. Using the above results, a model for managing chemical substances was developed. This will more efficiently provide MSDS information to workers covered by the presidential decree and allow the construction of a management system database for better cooperation with the executive branches in Korea.

• 도시과학
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• 제10권1호
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• pp.29-37
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• 2021

The number of old buildings older than 30 years in Korea continues to increase from 29.9% in 2005 to 38.8% in 2020. Considering the growing urban regeneration projects, urban maintenance projects, the suppression of urban expansion, and the lack of idle land in the city, the dismantling of old buildings is expected to increase further in the future. As major accidents at building dismantling sites continue to occur, related agencies are also strengthening safety management of building dismantling works. While physical safety management such as collapse and fall is strengthened, there is a relative lack of interest in the health of workers at dismantling sites due to environmental hazards. Since relevant laws stipulate that construction waste should be separated and discharged, old buildings need to be considered for environmental hazards such as fine dust, floating bacteria, and floating molds when dismantling. In this study, we intend to find important safety management elements in the management of building dismantling sites, measure environmental factors harmful to dismantling workers, and present basic data for the management of dismantling sites in the future. "Safety management" was the highest priority, followed by "dust," "vibration," "noise," "bacteria," and "smell." The perception of the importance of "physical damage prevention" with workers working on dismantling and managers managing the site came out similar, but the perception of "work efficiency" and "health disorder prevention" through environmental hazard management showed different priorities. In the process of dismantling, floating bacteria and floating mold were collected, cultured, and measured the concentration in the indoor air. The measurement was measured by dividing it into pre-dismantling and during dismantling.

• Advances in Computational Design
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• 제4권2호
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• pp.179-196
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• 2019

Temporary scaffold systems in the construction site play an important role for ensuring the safety of the workers and for constructing the stable structures. To assemble the scaffold, the pipe scaffolding system, the wedge binding scaffolding system and the particular materials have been utilized. To design the material arrangement of a scaffold, firstly the configuration was determined considering the construction geometry. Then, the strength of the scaffold was confirmed and the quantity of the material was accounted. In this paper, the design method of the temporary scaffold was proposed for intending the semi-automatic procedure. In the proposed design method, the geometric design and the safety requirement were specified by the safety standard and the design flow was followed by the designer's knowledge. The size and the quantities of the materials were calculated by referring to the relation between the scaffold and the constructing structure. In the calculating procedure, three dimensional positions of each scaffold materials were calculated and recorded simultaneously. Then, three dimensional scaffold structural was drawn semi-automatically on the CAD software by using the obtained material sizes, positions and directions. The proposed design method provides us the precise quantities of scaffold materials and enables us to reduce the design effort and the cost estimation processes. In addition, the obtained results can be applied to BIM software after converting to IFC format.

• 건축역사연구
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• 제16권5호
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• pp.21-40
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• 2007

Choryang-weagwan which was the largest international trading place between Joseon Dynasty and Tokugawa Shogunate had been maintained from 1678 through 1872 in Busan. Particularly, they had 21 times repairing constructions for 200 years since its establishment. It is noticeable that Joseon Dynasty permitted Tokukawa Shogunate to construct main pavilions and guesthouses as his style due to the good-neighbor policy between two countries, and Tokukawa Shogunate struggled to achieve his own culture in that place under the supervision of Joseon Dynasty. For satisfying his needs, the architectural craftsmen of Tokukawa Shogunate were mobilized by the chief of construction company which was called kumi-gasira in the most of cases. When they came to Busan for the construction, they brought their own architectural tools. On the one hand, the carpenters and workers of Joseon Dynasty were organized by the traditional construction superintendents which were called Gamdong-gwan and they had to carry out their responsibilities with Japanese technicians at the same workplace. Judging from this fact, the construction site of Weagwan was the good place for exchanging the architectural technology between two countries. This study especially focuses on Tokukawa Shogunate craftsmen who made the repairs of Dongwan-samdaechung in 1727 such as carpenters(Dai-ku), sawyers(ko-biki), and surveyors(Tsue-tsuki) and their tools such as Hatsuri(=Masakari) and Yo-ki(=Oh-no). The constructions in this period, there were not only the repairs of 3 major pavilions including the trading center, but also one of the most active repairing constructions comparing with other period, therefor these were important constructions to shows us repairing construction of Choryang-weagwan of those days.

• 한국건축시공학회지
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• 제10권2호
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• pp.33-40
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• 2010

근래에 들어 건축공사의 규모가 점차 대형화 고층화 되어 가고 있으며, 건설 작업의 효율성을 증진시키기 위하여 양중장비의 사용이 급진적으로 증가하고, 그 필요성이 높아져가고 있는 실정이다. 이에 많은 연구자들이 타워크레인 관련 연구들을 진행하였다. 하지만 이러한 연구들은 주로 타워크레인 선정, 위치 최적화, 양중시간 등에 집중되어 있으며, 실질적으로 타워크레인의 설치에 관한 연구문헌은 부재하다. 따라서 건설현장에서는 장비업체 작업자들의 경험에 의한 주관적인 판단과 기술보조에 의해 수행되어 왔다. 따라서 본 연구는 시뮬레이션 기법을 이용하여 타워크레인 설치 프로세스의 생산성을 분석하고, 이에 대한 일반화 모델을 제시함으로서 현장 관리자들이 직접 활용할 수 있도록 기초자료를 제공하고자 한다.

• 한국산학기술학회논문지
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• 제22권4호
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• pp.520-528
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• 2021

본 연구에서는 거푸집 공사의 품질 관리와 관련한 주요 요인을 도출하고, 요인별 중요도와 관리도에 대한 시공 관리자, 사업 관리자 및 현장 작업자의 인식 차이를 확인하고자 한다. 거푸집 공사와 관련한 18개의 요인 중 현장 작업자는 거푸집 공사의 작업 세부 과정에 영향을 주는 요인들의 개선을 요구하는 반면, 시공 관리자는 공사의 진행 및 완료여부의 판단할 수 있는 요인들을, 사업 관리자는 건축물의 품질에 영향을 주는 요인들의 개선을 요구하는 것으로 나타났다. 이러한 결과는 시공 관리자는 공사의 진행 및 완료 여부의 판단을 위해 거푸집 외관 등 유관으로 식별 가능한 요인을 중요하게 생각하고, 사업 관리자는 거푸집 작업 공사 후 실시되는 콘크리트 타설과 연계된 건축물 골조의 품질에 영향을 주는 요인을 중요시 하는 반면, 현장작업자는 작업장 상황, 자재의 연결 및 간격 등과 같이 거푸집 작업 세부 과정에 영향을 주는 요인에 대해 관심을 가지기 때문으로 사료된다. 본 연구의 결과가 참여 주체의 다양한 입장과 의견을 포괄적으로 수용한 거푸집 공사의 품질관리계획 수립에 기여하기를 기대한다.

• 한국산업보건학회지
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• 제33권2호
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• pp.115-125
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• 2023

Objectives: This study was conducted to measure the level of radon in the air at a highway tunnel construction site in a gneiss area using the New Austrian Tunneling Method (NATM) and to evaluate exposure levels by occupation. Methods: Radon concentrations in the air were measured using E-PERM at points 300 m, 600 m, and 900 m from the tunnel entrance during the excavation and waterproofing work inside the tunnel. In addition, radon concentrations were measured during external excavation to compare with the inside of the tunnel. Personal exposure levels for major occupations including tunnel workers, construction equipment operators, waterproofers, shotcrete workers, and safety and health managers who participated in the construction were estimated using radon concentration measured in the work process area and working hours by occupation. Results: As a result of a total of 77 radon measurements, the geometric mean (GM) concentration was 71.1 Bq/m³, and the maximum concentration was 127.3 Bq/m³, which was below the indoor air quality criteria. Radon concentration by process decreased in the order of the tunnel excavation process (GM= Bq/m³, GSD=1.2), waterproofing process (GM=73.35 Bq/m³, GSD=1.2), and outside excavating process (GM=45.28 Bq/m³, GSD=1.2). Processes inside the tunnel were significantly higher than outside excavating processes (p<0.05). There was no statistically significant difference in radon concentration measured inside by distance from the tunnel entrance, but the innermost point of the tunnel, 900 m (GM=79.24 Bq/m³, GSD=1.27), measured the highest. Conclusions: The occupation with the highest individual exposure to radon was tunnel worker (64.16 Bq/m³), followed by construction equipment driver (64.04 Bq/m³) and waterproofer (63.13 Bq/m³).

• 한국건축시공학회지
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• 제9권5호
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• pp.79-86
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• 2009

철골구조에서 뿜칠내화피복재는 화재발생시 철골구조물의 내력이 저하되는 것을 방지하는 중요한 자재이다. 그러나 인력에 의한 작업 등으로 인하여 품질관리가 어렵고, 기능인력의 수급도 용이하지 않으며, 기능인력이 유해한 환경에 노출될 가능성도 높은 실정이다. 일반적으로 이와 같이 품질관리가 어렵고 인체에 유해한 건설작업들은 자동화 장비를 도입함으로써 문제를 어느 정도 완화할 수 있다. 그러나 기존의 건설현장은 환경이 비구조화되어 있기 때문에 장비의 주행이나 작업위치선정 등까지 자동화하기는 매우 어려웠다. 본 연구에서는 뿜칠내화피복 작업을 자동화하기 위한 기초연구로써, 자동화시스템과 첨단기술인 RTLS와의 연계성을 검토하고 내화피복 뿜칠 자동화작업의 시나리오, 시스템 구성요소 등을 제안하였다. 제안된 시스템은 아직 개념단계이므로 많은 제약조건들이 해결되지는 않았으나, 제안된 시스템으로 작업하면 내화피복의 균일한 피복두께를 유지할 수 있으며, 철골 구조물과의 일체성을 확보하며, 내화성능을 향상시킬 수 있을 것으로 기대된다. 또한 내화피복의 품질이 확보됨에 따라, 대형 철골 구조물에 화재가 발생하더라도 일정한 강도를 유지할 수 있어서, 화재의 전이를 방지하는 데에 효과가 있을 것으로 예상된다. 향후에는 첨단 IT인 USN등 첨단 모니터링 기술, BIM기술, 자재의 위치정보 인식기술 등과 연계하여 본 연구를 진행할 예정이다. 이와같은 기술과 본 연구가 연계되면, 국내 건설자동화 수준을 제고시키고, 건설 자원의 효율적 체계적 관리를 통한 비용절감, 공기단축, 정밀시공 등을 구현하는 데에 더욱 기여할 수 있을 것이다.