• 한국CDE학회논문집
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• 제22권2호
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• pp.118-128
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• 2017

Many countries have been developing BIM-based building code checking system and studies in the utilization of Industry Foundation Classes (IFC) in building code checking. IFC is the open standard of BIM format. Currently, there is a disadvantage that could not include all of the attribute for the regulations of each country and there is the problem with the interoperability of the different defined IFC approach between BIM software. This study focus on developing, derived object and property by comparing through domestic regulation and IFC2x3 specification provided by the buildingSMART and classified review type depending on the interoperability of derived information. According to classified review type, the IFC data structure was established and property mapping contents were developed by including BIM software compatible information and creating a type of review plan. When the developed property mapping contents are applied into BIM-based building code checking system, checking of the BIM data generated from various fields is made effective and thus improving the interoperability of information.

• 토지주택연구
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• 제11권4호
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• pp.105-113
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• 2020

In this research, the automated system for 3D modeling and stability evaluation of caisson was developed. It is possible to build a BIM model while examining the stability of the structures to improve the practical use of BIM technology. This study analyzed industry cases and guidelines for caisson stability evaluation and BIM-based modeling. As a result, the data for calculating the stability evaluation of caisson as well as the modeling parameters were derived. In particular, the automated system for 3D modeling, which reflects more than 30 parameters, allows for BIM models for various types of the caisson, such as open-cell caisson, open-cell caisson with uneven, slit caisson, slit caisson with uneven, and curved caisson. The study tested the proposed system using case studies and found that it helps not only to automate the BIM model with various caisson types as parameters but also to make partial shape changes accessible. The study also confirmed that the stability evaluation can be quickly carried out with shapes changed. Finally, the study results suggest that the proposed method should complete the task seven times as fast as the conventional work method.

• 한국BIM학회 논문집
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• 제9권4호
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• pp.31-40
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• 2019

With Building Information Modeling(BIM) becoming the de facto standard for data sharing in the AEC industry, additional needs have increased to ensure the data integrity of BIM models themselves. Although the Industry Foundation Classes provide an open and neutral data format, its generalized schema leaves it open to data loss and misclassifications This research applied deep learning to automatically classify BIM elements and thus check the integrity of BIM-to-IFC mappings. Multi-view CNN(MVCC) and PointNet, which are two deep learning models customized to learn and classify in 3 dimensional non-euclidean spaces, were used. The analysis was restricted to classifying subtypes of architectural walls. MVCNN resulted in the highest performance, with ACC and F1 score of 0.95 and 0.94. MVCNN unitizes images from multiple perspectives of an element, and was thus able to learn the nuanced differences of wall subtypes. PointNet, on the other hand, lost many of the detailed features as it uses a sample of the point clouds and perceived only the 'skeleton' of the given walls.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2010년도 춘계 학술논문 발표대회 1부
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• pp.257-260
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• 2010

The Architecture, engineering & construction (AEC) industry domains have grown more complex and larger. BIM is a digital representation of a building to facilitate the exchange and development of construction information integration and interoperability. Industry Foundation Classes (IFCs), under development by International Alliance for Interoperability (IAI), represent the part of buildings or elements of a process. IFC has been adopted as a central information repository in order to deliver integrated information. BIM softwares could open the IFC file, recognize standard objects. However, sometimes, information distortion or information loss occurs during information exchange. As project participants exchange BIM information by using BIM softwares they will need a reliable and efficient exchange of information. This paper suggests the BIM object information compatibility problems among BIM softwares and classify the BIM object information compatibility problems.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.267-273
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• 2013

Early design phase energy modeling is used to provide the design team with first order of magnitude feedback about the impact of various building configurations. For better energy-conscious and sustainable building design and operation, the construction of BIM data interoperability for energy performance assessment in the early design phase is important. The purpose of this study is to suggest construction of BIM data interoperability for energy performance assessment based on BIM. To archive this purpose, the authors have investigated advantage of BIM-based energy performance assessment through comparison with traditional energy performance assessment and suggested requirement for construction of open BIM environment such as BIM data creation, BIM data software practical use, BIM data application and verification. In addition, the authors have suggested BIM data interoperability and BIM energy property mapping method focused on materials.

• 전산구조공학
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• 제25권1호
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• pp.28-33
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• 2012

• 전산구조공학
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• 제23권2호
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• pp.18-20
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• 2010

• 지적과 국토정보
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• 제44권2호
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• pp.91-101
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• 2014

본 연구에서는 비정형구조인 한옥 구조물을 LOD3 수준의 3차원 객체로 제작하여 국내 외로 대중화된 오픈플랫폼에 탑재함으로써 한옥 구조물의 3차원 모델링을 통한 3차원 지도 제작의 가능성을 확인하였다. 또한, BIM 기반을 이용한 한옥의 3차원 모델 제작을 통해 실내 공간정보에 대한 3차원 모델링을 수행함으로써 한옥 구조물의 3차원 표현기법과 상위 표현방법의 발전가능성을 확인하고자 하였다. 아울러 비정형 구조물인 한옥의 LOD4단계 수준의 공간정보 표현의 가능성을 제시하였으며 현재 국내 외에서 제공되고 있는 공간정보 오픈플랫폼의 허용 데이터 크기의 한계에 의하여 탑재는 불가능함 또한 확인하였다.

• 한국산학기술학회논문지
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• 제18권2호
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• pp.23-30
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• 2017

건설산업 분야에서 빌딩정보모델링(BIM)은 단지 설계를 보다 쉽게 지원하고, 3차원 모델을 구현하기 위한 도구만은 아니다. 왜냐하면, 설계, 시공, 유지관리 및 철거에 이르는 건설 생애주기 동안의 다양한 데이터를 입력하고 관리가 가능하도록 구조화 되어 있기 때문이다. 이렇게 구조화된 모델을 가지고 다양한 분석 및 해석이 가능해지기 때문에 BIM의 역할은 점점 더 증대되어 가고 있다. 노르웨이 베스트바넨의 국립예술박물관 현상설계 경기를 시작으로 국내외적으로 BIM을 설계 경기 및 평가에 적용하려는 노력이 다각적으로 발생하고 있다. 이때, 기존 방식의 설계경기와는 다르게 BIM기반으로 전사적인 시뮬레이션을 통한 자동적이며, 신뢰성이 높고 효율적인 평가가 가능하게 된다. 이를 위하여 각 BIM 도구를 대상으로 하는 모델링 가이드가 필요하며 이를 검증할 수 있는 평가시스템의 요구가 생기게 되었다. 본 논문은 건설산업 분야에 새로운 패러다임을 이끌고 있는 BIM 기술을 이용한 새로운 방식의 설계평가 및 절차의 방향에 대해, 전력거래소 본사사옥 등의 이전 설계경기 사례를 비교분석하고 이에 대한 개선방안을 설명함으로써 향후 발주될 BIM기반 건축설계경기 평가의 방향을 제시하고자 한다.

• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2015년도 제52차 하계학술대회논문집 23권2호
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• pp.321-322
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• 2015

본 연구는 BIM의 최종 모델(As-built Model)이 BIM기반 유지관리 시스템(Facility Management System)에 활용되는 것을 전제로 하며 유지관리 분야 중 공간관리 분야에서 활용되는 BIM 모델을 구축하기 위한 방안을 제시한다. 연구의 최종 결과물인 BIM 유지관리 가이드라인은 향후 BIM 발주 지침에 반영되어 건설과정에서 구축된 BIM 정보를 유지관리 단계까지 지속적으로 활용하도록 유도할 것이라 기대한다.