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에너지성능지표(EPI)를 대상으로 한 개방형BIM기반 건축인허가 개선방향 제시
김인한,김민찬,최중식,Kim, Inhan,Kim, Minchan,Choi, Jungsik 한국건설관리학회 2015 한국건설관리학회 논문집 Vol.16 No.6
세계적으로 환경오염문제가 대두되면서 국내에서도 정부와 민간차원에서 친환경건축을 위한 노력이 활발히 진행 중이다. 하지만 건축물의 친환경 성능 및 친환경 관련 법규 및 기준 등에 대한 평가환경은 2차원기반의 수작업을 통한 평가로 진행되기 때문에 시간, 비용, 노동력 등이 많이 소요되며 평가의 정확성 및 효율성을 확보하기 어렵다. 따라서 본 논문에서는 개방형BIM기반으로 친환경건축 관련 인허가 업무의 개선을 목적으로 친환경건축 관련 인허가 조건 중 에너지성능지표 평가항목과 IFC포맷의 데이터와 연계를 통한 평가방안 모색하고 발생하는 문제점에 대한 대안을 제시하며 이를 반영한 평가프로그램의 활용으로 평가 프로세스를 제시함으로써 개방형BIM기반으로 에너지성능지표의 평가를 자동화하는 방안을 제시한다. 본 연구에서 제시된 방안을 친환경건축 관련 인허가 업무에 적용함으로써 업무절차의 간소화와 자동화를 통한 시간, 비용, 노동력의 절감을 기대할 수 있으며 설계변경 시 요구되는 절차가 단순화되어 업무의 생산성과 효율성이 향상되며 검토과정과 결과 값의 투명성과 검토의 정확성과 신뢰도를 확보 할 수 있을 것으로 기대한다. As many countries have been raising awareness of environmental issues, greater efforts for eco-friendly construction have been made in both governmental and private sectors. However, assessment circumstances for building energy performance and green building standard of legislation are still based on two dimension and handwork. This takes time, cost and labor, and makes assessment inaccurate and inefficient. Therefore, this study suggests methods to improve eco-friendly construction permission process and to automatize open BIM-based assessment of Energy Performance Index (EPI) among several eco-friendly construction certification standards. First, it analyzes the relations between assessment criteria and IFC data, and provides solutions to problems and limitations. Second, it applies the solutions to assessment program in order to automatize open BIM-based assessment for EPI. The eco-friendly construction permission process with these solutions applied will reduce time, cost, and labor by simplifying and automatizing the tasks. Also, the simplified process of design revision will improve not only productivity and efficiency but also accuracy and reliability.
개방형BIM기반 건축 자동 법규검토를 위한 내·외부 공간 및 필로티 구조 자동 판별 알고리즘 개발
김인한(Inhan Kim),이아진(Ahjin Lee),이세진(Sejin Lee),김지영(Jiyoung Kim),최중식(Jungsik Choi) (사)한국CDE학회 2021 한국CDE학회 논문집 Vol.26 No.4
Various efforts are being made to commercialize BIM in Korea. Conformity assessment is used as a way to improve BIM data quality. When code checking, the use or the space is limited first. Thus, the importance of spatial classification increased, and the names of spaces were coded. However, there were cases where spaces with the same name were external and internal (e.g., Balcony), which could not be distinguished by spatial classification codes. Therefore, an automatic identification algorithm for internal and external space was developed and verified. Additionally, the piloti structure among the external spaces has clear conditions, so we developed the automatic identification algorithm for piloti structure using automatic identification algorithm for internal and external space. It is expected that it will be used when conducting research that automatically calculates areas.
A Study on Open BIM based Building Energy Evaluation based on Quantitative Factors
Inhan Kim(김인한),Jin Jin(진진),Jungsik Choi(최중식) (사)한국CDE학회 2010 한국CDE학회 논문집 Vol.15 No.4
Energy consumption by buildings accounts for a large part of the world’s energy consumption. Methods to analyze building energy consumption before construction have been studied for decades. With BIM (Building Information Modeling) technology, architects can easily export building information to data models in order to analyze the design’s effect on building energy efficiency. Although several BIM-based energy simulation applications are currently available, utilizing these applications for energy efficiency simulation is difficult. In this paper, by comparing existing BIM-based energy applications, the authors test the building energy efficiencies estimated by some BIM models, offer ideas and solutions to problems that appeared during the test process and propose new methods for BIM-based energy evaluation based on quantitative factors.
개방형BIM기반의 건축공사 개산견적을 위한 물량산출 적용지침 활용방안 기초 연구
김인한(Inhan Kim),엄성곤(Sung-gon Um),최중식(Jungsik Choi) (사)한국CDE학회 2015 한국CDE학회 논문집 Vol.20 No.2
In recent years, numerous studies have attempted to extract quantity data by using Building Information Modeling (BIM). In terms of open-BIM based quantity take-off at the early design stage, only few studies were conducted in the field of cost engineering. A lack of compatibility of open BIM for information exchange is postulated as the cause. The Industry Foundation Classes (IFC) extension model has been developed to accommodate the interoperability with quantity take-off software. Improvement of open BIM for quantity take-off needs exchange requirements and model guidelines. For this purpose, the quantity data of IFC models were analyzed using BIM analysis tools. This paper also provides a proposal of requirements on open BIM based quantity take-off at the early design stage. Further this study have been develop the interface system for open BIM based quantity take-off requirements with the results on this study.
개방형BIM기반 2D도면 자동 생성 프로그램 개발에 관한 연구
김인한(Inhan Kim),이민재(Minjae Lee),최중식(Jungsik Choi),김구택(Gutaek Kim) (사)한국CDE학회 2016 한국CDE학회 논문집 Vol.21 No.4
Especially for resolving BIM data compatibility issue, as one of recently raised BIM technology issues, has also been improved by using open BIM, representatively using IFC (Industry Foundation Classes) format. As shown in many case studies, usefulness of BIM technology is increasing day by day, and the IFC-based open BIM technology is essential in recent AEC projects where the productive collaboration is of importance. One of current problems in actual projects is that there is a conflict between conventional ways and newly developed BIM ways. Using both conventional and new technologies leads construction workers to having more work loads, consequently the efficiency and productivity of on-site workers have been decreased. Thus, it is strongly necessary to facilitate 3D BIM models to extract and generate 2D precision drawings in automation, especially using open BIM technologies. Some native BIM authoring tools have limitations in there automatic generation of 2D drawings, and there is no standardized mechanism to generate 2D drawings from heterogeneous applications. For this reason, this paper aims to develop an automated stand-alone program to generate 2D drawings in automation using IFC file, totally independent from various BIM authoring tools. By using the application described in this paper, any type of general drawings such as plan, section and elevation can be extracted without additional efforts. The development approach described in this paper, based on the open BIM technologies, has a strong impact to the current process especially in the perspective of enhancing productivity when we need to find out a trade-off in-between conventional and new approaches.
초기 설계단계 건물 에너지 성능평가를 위한 IFC 속성정보 호환성 향상에 관한 연구
김인한(Inhan Kim),유현재(Hyunjae Yoo),최중식(Jungsik Choi) (사)한국CDE학회 2012 한국CDE학회 논문집 Vol.17 No.6
Nowadays, AEC industry tries to adopt BIM for low-carbon and eco-friendly building development. With increasing environment policies, many of global construction projects require the adoption of BIM for its many advantages. The advantages can be maximized with Open BIM since it can produce optimal results for various purposes of energy performance assessment. However there are some troubles in representation and property information in the process of Open BIM based energy performance assessment. To examine such troubles, this study focuses on differences between IFC of Open BIM and IDF format of Energy Plus known as the most accurate and diverse energy performance assessment. Two issues the study addresses are form representation and property information. The study figures out the different definition of IFC and IDF, and suggests the way of interoperability. The interoperability test of IFC for building energy performance assessment hope to develop of Open BIM based energy assessment.