• Land and Housing Review
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• v.13 no.1
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• pp.113-129
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• 2022

A building's eco-friendliness is directly related to various values including the life cycle cost of a building. However, the conventional architectural design method has a limitation in that it cannot create an optimized case according to the surrounding environmental conditions. Therefore, the purpose of this research is to present a design assistance tool that can review planning cases optimized for the environmental conditions of the building site in the planning stage of architectural production. To achieve the purpose of the study, an algorithm for realizing 3D modeling of the region and analysis of the solar environment was produced based on the site contours, building, and road information from the digital topographic map provided by the National Geographic Information Institute. To examine the validity of the developed algorithm, a comparative experiment was conducted targeting the elevation direction of the existing building. As a result, it was found that the optimal elevation direction selected by the algorithm can receive higher insolation compared to the front facade of the main building.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.32 no.6
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• pp.458-464
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• 2020

Calibration of load-resistance factors for the limit state design of perforated caisson breakwaters are presented. Reliability analysis of 12 breakwaters in nationwide ports was conducted. Then, partial safety factors and load-resistance factors were sequentially calculated according to target reliability index. Load resistance factors were optimized to give one set of factor for limit state design of breakwater. The breakwaters were redesigned by using the optimal load resistance factor and verified whether reliability indices larger than the target value. Finally, some load-resistance factors were proposed by changing target reliability index.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.33 no.6
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• pp.374-382
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• 2021

The scour risk assessment was conducted for ultimate limit state of newly developed penta pod suction bucket support structures for a 5.5 MW offshore wind turbine. The hazard was found by using an empirical formula for scour depth suitable for considering marine environmental conditions such as significant wave height, significant wave period, and current velocity. The scour fragility curve was calculated by using allowable bearing capacity criteria of suction foundation. The scour risk was assessed by combining the scour hazard and the scour fragility.

• KIEAE Journal
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• v.5 no.4
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• pp.17-24
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• 2005

상업간판은 단순한 광고목적 외에 도시의 시각이미지를 구성하는 도시환경구성요소 중 하나이다. 또한 건축물의 주요한 구성부분이며 주민에게는 환경적 즐거움을 주어야 하는 의무가 있으며 보행자로 하여금 강제적으로 주목을 끌게 해야 하는 상업적 목적을 가지고 있다. 그러나 본래의 목적과 달리 하나의 도시환경저해요소로서 문제점을 유발하기도 한다. 이러한 문제점들을 시정하기 위한 주민과 자치단체의 상업간판 환경개선을 위한 시도와 이에 따른 결과를 살펴보면서 환경개선을 위한 시도가 결과적으로 주민과 도시환경 모두에게 어떠한 영향을 끼쳤는지를 살펴보았다. 현재 한국의 간판게시규정은 중앙집권적 규율하의 기본규정과 비효과적인 부처간의 상이한 규정 및 하급세부규정의 미비에 기인하여 상업간판의 난립상황을 초래하였다. 아울러 살펴본 일본, 미국, 프랑스에서 적용하고 있는 기본규정도 한계가 있음을 살펴보았으며 따라서 어떠한 개선방향이 주민과 자치단체 양자에게 이익을 주고있는지를 살펴보았다. 효과적인 간판설치규정의 제정은 불가능하지만 규정은 제정하되 무엇보다 자발적인 주민들의 참여와 건축가, 사용자, 자치단체 사이의 주의로운 조화가 필요함을 살펴보았다.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2011.04a
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• pp.247-251
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• 2011

국내에도 BIM이 도입되어 다수의 프로젝트가 수행되고 있으며 정부에서는 정책적으로 BIM 확산을 도모하고 있다. 하지만 기술적 한계와 이해의 부족으로 인한 여러 가지 부작용이 발생하고 있으며 특히 현재 도입이 가장 활성화 되어 있는 설계 엔지니어링 업무 영역에서 보완이 필요한 부분도 가장 많이 발생하고 있는 실정이다. 이에 본 연구에서는 기존의 설계사례의 분석을 통해 협업 관점에서 MEP 작업요소의 주요 이슈를 도출하고 건축기계설비의 관점을 좀 더 정확하게 이해할 수 있도록 타 공종 기준의 MEP 작업요소 이해를 위한 기준을 제시하였으며 이러한 내용이 앞으로의 국내의 BIM 프로젝트의 수행과 지침의 작성에 활용될 수 있는 기초자료로 활용되기를 기대한다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2020.11a
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• pp.111-112
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• 2020

In the case of, the ignition of flammable external materials by the radiant flame and the accompanying fire in the upper layer are occurring every year, and in the case of the Flashover prediction formula, the limit is reached through the surface area of the space and the factor. Predicts heat release rate. In this study, the critical heat release rate of each prediction formula was calculated based on the ISO 9705 model.

• The Journal of the Korea Contents Association
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• v.8 no.2
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• pp.132-139
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• 2008

The aim on this thesis is to develop virtual construction designing experience web-site in order to help non-professional to predict the actual construction working result by self-construction design, provided by virtual reality program, sharing knowledge of architectural design and materials on internet to solve certain problems. The way of study is using case of virtual reality technology which is practically using in architecture era recently; in construction design, deducting realizable virtual reality technology of limitation and its solution; analyze case of construction designing program which is currently used by professionals; constitute required essential functions as UI(User Interface) when constructing. Followed by result of study, as a proposal, in service, technical, and UI sectors are the way to construct its objectives for internet based virtual construction experience web-site.

• Proceedings of the Korea Contents Association Conference
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• 2007.11a
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• pp.617-621
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• 2007

When people who are not expert need remodeling or interior construction in their houses or buildings, there might be several problems. A lack of knowledge and unforeseen can lead expressing wrong design or construction that they did not want. The aim on this thesis is to develop virtual construction designing experience web-site in order to help non-professional to predict the actual construction working result by self-construction design, provided by virtual reality program, sharing knowledge of architectural design and materials on internet to solve certain problems. The way of study is using case of virtual reality technology which is practically using in architecture era recently; in construction design, deducting realizable virtual reality technology of limitation and its solution; analyze case of construction designing program which is currently used by professionals; constitute required essential functions as UI when constructing. Followed by result of study, as a proposal, in service, technical, and UI sectors are the way to construct its objectives for internet based virtual construction experience web-site.

• Journal of Korean Society of Steel Construction
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• v.23 no.2
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• pp.147-158
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• 2011

The purpose of this research was to analyze the connections of the seismic-performance values for domestic-performance-based designs. Basic research on the performance design method has been increasing of late, along with performance-based organization investigations. These investigations concern the performance level state of steel structure buildings. According to the performance limit state, seismic-performance values should be presented as appropriate steel structure engineering amounts. The first step, based on the full-scale steel structure experiments, involves researching on the making of a basic document. The moment-rotation angle relationship results of the experiment on the moment-frame connection were used to assort the functional and undamaged limits, which were assumed to be less than the yield moment. Moreover, the repairable and safety limits, which were assumed to exist between the yield and maximum moments, were assorted by investigating the accumulated plastic deformation ratio.

• Journal of the Korean Geotechnical Society
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• v.38 no.8
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• pp.7-15
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• 2022

Most studies have conducted cryogenic triaxial compression tests with frozen specimens prepared in a separate mold by one-directional freezing. This method has the potential to generate residual stress in a frozen specimen and cannot be adopted to simulate the application of the artificial ground freezing method in the field. Therefore, in this study, novel equipment and procedure for the cryogenic triaxial compression test were proposed to overcome the limitations of existing test methods. Therefore, the mechanical characteristics of frozen sand, considering the effect of temperature and confining pressure, were evaluated. As the freezing temperature decreased, the brittleness of frozen sand increased, and the strength increased due to a decrease in the unfrozen water content and an increase in the ice strength. A higher confining pressure resulted in an increase in interparticle friction and the pressure melting phenomenon, which caused strength reduction. Thus, it was found that the mechanical behaviors of frozen sand were simultaneously affected by both temperature and confining pressure.