김성아 교수

Noise barrier tunnels (NBTs) comprise prefabricated components that are easily replaceable, reusable, and have the capacity to improve performance when applied to components as their replacements. Reusing NBTs is more price competitive and environmentally friendly than producing new components. However, determining the remaining life of components before they need to be dismantled, using existing NBTs and their maintenance methods, is a considerable challenge. Therefore, this study used a protot

Economic feasibility and cost analysis in the preliminary planning stage of early-phase construction projects have a significant impact on project management and implementation. However, while estimating the construction cost per unit area, the existing approaches do not account for factors other than the area-related information, causing estimation error. Therefore, a construction cost estimation model that can be utilized in the early phase of a construction project is developed in this study

The objective of this study is to establish effective and practical BIM adoption strategies by figuring out actual BIM use intentions and grasping quantitative acceptance degrees of key project participants in the Korean Architecture, Engineering, and Construction (AEC) industry. The result of this study shows that the key participants were generally positive in interest in and necessity of BIM but did not have strong intentions to accept BIM. In addition, different attitudes of participants tow

This study presents a real-time monitoring system integrating Building Information Modeling (BIM) and digital twin technology to enhance maintenance efficiency and safety in urban infrastructure. Unlike conventional periodic inspections, which miss dynamic changes and increase costs, this system uses a BIM model at LOD 400 for a solar-powered noise barrier tunnel integrated with the Wansan Tunnel in South Korea. It incorporates IoT sensor data, including vibration, tilt, light, air quality, and

Building information modeling based quantity takeoff has been proved to be feasible in the construction industry through various research and pilot projects. However, all of them were limited to preliminary estimation, which does not take account on the detailed information on the interior part of a building but focuses on the structure and exterior part of a building. Quantity takeoff at the detailed level is essential but it takes a lot of time and efforts to model the interior part of a build

The purpose of this study is to propose a urban energy monitoring visualization environment in the context of the U-Eco City R&D Project. As the smart control of energy resource increases its importance for the sustainable growth of the built environment, how to monitor the energy usage in the city becomes the foremost task. Such a monitoring system should be accessible non only to the suppliers and decision makers, but to the consumers providing customized views and comprehensive information. A

Design Process Visualization System Intergrating BIM Data and Performance-Oriented Design Information Sung-Ah Kim, Yoon Choe, Myeongho Jang, Wookje Seol Pages 728-733 (2011 Proceedings of the 28th ISARC, Seoul, Korea, ISBN 978-89-954572-4-5, ISSN 2413-5844) Abstract: The essential role of design process visualization is to capture and represent design information as well as the change of design objects to keep track of reasons behind decision-making activities. The most prominent benefit of BIM,

One of the most critical challenges for architects in façade design is providing an effective view from the indoors to the outdoors of a building for users, although the main role of the parametric façade is covering openings to control daylight and temperature. This study uses a genetic algorithm to optimize and evaluate the number and place of nodes and the position of supports required for a parametric façade based on the geometric patterns. Using the dataset with genetic algorithms is effect

Traditionally, models have been used by designers to represent abstract design ideas or to analyze and evaluate the refined design solutions. The digital model, in particular, represents the logics, process, and intended result of the design in the form of digital information and media. Innovations in Internet of Things (IoT) and 3D printing technologies now enable the various levels of real-world spatial interactions that were possible only when the user becomes an avatar in a cyberspace. This

Objectives: This study was conducted to evaluate factors related to the intention of participation in a worksite smoking cessation program. Methods: To explain the health behavior of participating intention in a worksite smoking cessation program, the health belief model(HBM) was used as study model, and 144 self-administered questionnaires were completed by electronic company workers. Variables of the health belief model were composed of perceived susceptibility to smokinginduced disease, perce

The utilization of artificial intelligence (AI) in daylight analysis has recently experienced an increase. Its capabilities have been demonstrated through different studies. While using AI for daytime simulation can reduce time, it also presents significant challenges. Whether we utilize the conventional approach of simulating daylight or employ artificial intelligence, the process of going from hand drawing to obtaining the daylight analysis result involves intricate procedures associated with

Information about space and activity is of interest in every phases of building design and construction. As it is not easy to reconcile material and construction viewpoints, however, existing data models could not easily apply these concepts within the CAD system. Due to the recent advances in semantic web research, ontological approach seems to promise a flexible building information modeling. More precisely, the ontology approach enables an explicit specification of conceptualizing building in

BIM 적용으로 인해 비용절감 효과를 얻은 사례가 많은 학회, 보고서, 세미나 등을 통해 보고되고 있다. 이러한 사례에서는 BIM을 적용하여 재작업 및 재시공방지와 같은 직접적인 비용 절감 효과를 얻을 수 있다고 언급하고 있다. 또한 작업시간 단축, 업무 생산성 향상과 같이 비용으로 환산할 수 없는 효과도 존재한다. 국내외 BIM 사용자들은 BIM 적용으로 인한 비용절감에 관한 잠재적인 가치가 있다고 판단하고 있다. 그러나 아직까지 국내에서는 BIM 적용으로 인한 뚜렷한 경제적 가치(ROI)가 드러나지 않고 있으며, 국내 BIM 사용자들도 경제적 성과에 대해서 부정적인 반응을 보이고 있다. 따라서 본 연구에서는 경제적 가치로 환산 하기 어려운 작업시간, 생산성 향상과 같은 BIM 적용 효과를 진단하고, BIM 적용 효과를 얻기 위해서 수반되어야 하는 것들은 무엇인지 살펴보고자 한다. 그리고 본 연구는 건설 프로젝트 생애주기 동안 다양한 분야에 적용될 수 있는 BIM의 적용효과를 견적

This study proposes a theoretical framework for using an XML-based building information description. The framework enables computer-based information systems to easily share and exchange building information, to visualize spatial aspects of buildings. The BSDL framework which was proposed in an earlier research work, provided a way of describing physical aspects of certain building types. The framework was promising in that it could fit to the XML-aware software applications while the human user