• 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.

• 한국건설관리학회논문집
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• 제16권2호
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• pp.97-105
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• 2015

건설산업에 BIM이 확대 적용되어 감에 따라, 건축물 유지관리에 BIM을 적용하기 위한 연구개발이 활발하게 진행되고 있다. 하지만, 건축물 전 생애주기를 고려한 BIM기반 건축물 요구정보의 입력과정은 초기 설계단계에서부터 전문가에 의하여 유지관리를 고려한 수작업의 개입이 요구되며, 단계별 및 주체별로 시설물 유지관리 요구정보의 입력항목이 구분되어 있지 않아, 실무에서 이를 모두 입력 하는 데에는 많은 어려움이 있다. 또한, 유지관리 요구정보는 IFC (Industry Foundation Classes)기반의 건물 모델파일과 직접적으로 연계될 수 있으나, 일반 사용자가 유지관리단계를 고려한 IFC 파일을 생성 하는 데에는 정보입력의 수준 및 범위에 대하여 한계가 있다. 이에 본 연구에서는 프로젝트 진행 단계별 BIM정보 전달과정의 비효율성을 최소화하고 복합객체에 대한 속성정보의 통합적인 관리를 위하여, BIM기반 복합객체에 대한 속성정보의 통합관리 방안을 제안한다. 본 연구를 통하여, 단계별로 다르게 적용되는 BIM정보의 개발상세수준에 따라 개별 제품정보를 통합적으로 관리하는 것이 가능하여, 단계별로 진행되는 BIM기반 데이터 분석과정에서 발생할 수 있는 속성정보에 대한 혼란을 제거하여 적정한 속성정보의 활용 및 분석결과의 신뢰성과 정확성을 확보할 수 있다.

• Spatial Information Research
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• 제22권1호
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• pp.45-53
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• 2014

본 연구의 목적은 오픈소스 BIM서버를 활용해 GIS(Geographic Information System)기반으로 BIM(Building Information Modeling)객체를 가시화하는 비용 효과적인 시스템 아키텍처를 디자인하는 것이다. 최근 세계적으로 GIS와 BIM을 기반으로 시설물 관리 등을 효과적으로 구현하기 위한 연구가 진행되고 있다. 관련 연구에서 GIS와 같은 이기종 시스템과 연계가 가능한 BIM서버가 개발될 필요성이 부각되고 있다. 이런 관점에서 오픈소스 BIM서버는 비용 및 유지보수성 측면에서 효과적인 대안이 될 수 있다. 본 연구는 오픈소스 BIM서버를 활용한 GIS기반 BIM객체 가시화 시스템의 아키텍처를 디자인한다. 이를 구현하기 위해 BIM서버 관련 연구 동향을 분석하고, 최근 해외에서 활용되기 시작한 오픈소스 기반 BIM서버인 bimServer의 구조를 분석한다. BIM서버에 저장된 BIM객체의 데이터인 형상 및 속성을 GIS 상에 가시화할 수 있는 방안을 도출하고 아키텍처를 제안한다. 마지막으로 제안된 아키텍처의 적용성을 보이기 위해 시스템을 구현하고 결과를 도출한다.

• KIEAE Journal
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• 제15권5호
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• pp.95-105
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• 2015

Purpose: This paper presents a framework development for BIM (Building Information Modeling)-based OOPM (Object-Oriented Physical Modeling) for Building Thermal Simulation. The framework facilitates decision-making in the design process by integrating two object-oriented modeling approaches (BIM and OOPM) and efficiently providing object-based thermal simulation results into the BIM environment. Method: The framework consists of a system interface between BIM and OOPM-based building energy modeling (BEM) and the visualization of simulation results for building designers. The interface enables a BIM models to be translated into OOPM-based BEM automatically and the thermal simulation from the created BEM model immediately. The visualization module enables the simulation results to be presented in BIM for building designers to comprehend the relationships between design decisions and the building performances. For the framework implementation, we utilized the Modelica Buildings Library developed by the Lawrence Berkeley National Laboratory as a thermal simulation solver. We also conducted an experiment to validate the framework simulation results and demonstrate our framework. Result: This paper demonstrates a new methodology to integrate BIM and OOPM-based BEM for building thermal simulation, which enables an automatic translation BIM into OOPM-based BEM with high efficiency and accuracy.

• 한국BIM학회 논문집
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• 제8권4호
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• pp.49-59
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• 2018

Recently, the application of BIM for port & harbour facilities has been increasing, as it is widely applied to the infrastructure field both at domestic and abroad. However, the port and harbour projects still have very poor facilities information management system and the application level of BIM is very low compared to other facilities. Even if BIM is applied for those project, it is very difficult to determine in advance what information is needed without an accurate understanding of the business process. The purpose of this study is to develop a BIM framework for port & harbour facilities and to examine its applicability. To do this, we structured the classification of the port & harbour facilities and constructed object-based classification system based on ISO12006-3 standard. We also derived the BIM framework requirements from the viewpoint of process, standard, interface, and information, and confirmed the linkage of the BIM object classification system in the framework item. The applicability of the BIM framework for inspection process cases of port & harbour was examined. Accordingly, this study can solve requirement setting method, which is the non - procedural and non - systematic project information, in the BIM application process of the port & harbour project with the BIM framework. In addition, the framework is expected to be integrated into the system to play a key role in the selection of project objectives, and the ability to clearly identify the information requirements required by the BIM manager to perform the project.

• Spatial Information Research
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• 제21권6호
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• pp.1-9
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• 2013

최근 건설정보가 CAD에서 BIM으로 전환되고 있으며, GIS 분야는 기존 실외공간에서 실내공간으로 확장되고 있다. 이러한 상황에서 건설정보를 GIS와 연계하여 계획 설계 시공의 건설단계는 물론 건설 후 유지관리 및 운영 서비스 단계에서 지속적으로 활용할 필요성이 커지고 있다. 이를 위하여 건설정보와 공간정보의 유기적 결합을 통한 BIM-GIS 상호운용 플랫폼을 구축함에 있어 대용량 3차원 공간객체의 효율적 표현은 필수적인 요소이다. 본 연구에서는 대용량 공간객체를 표현함에 있어 각 레벨별 공간객체와 이에 따르는 텍스처를 효과적으로 생성할 수 있도록 BIM 데이터와 GIS 공간 데이터의 연계활용을 위한 공간데이터 LOD를 설계하고 이를 기반으로 기존의 대용량 공간객체를 경량화할 수 있는 알고리즘을 개발하였다.

• 한국BIM학회 논문집
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• 제13권2호
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• pp.37-46
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• 2023

The main objective of this study is to propose a method to enhance building safety using the Industry Foundation Classes (IFC) schema in Building Information Modeling (BIM). To achieve this goal, a fire object relationship diagram is created by using the Model View Definition (MVD) and Property Set (Pset) methodology, as well as the Work Breakdown Structure (WBS) based object relationship analysis. The proposed method illustrates how to represent objects and tasks related to fire prevention and human safety during a building fire, including variables that are relevant to these aspects. Furthermore, the proposed method offers the advantage of considering both the IFC object hierarchy and the project work hierarchy when creating new objects, thereby expanding the attribute information for fire safety and maintenance. However, upon confirmation via an IFC viewer after development, a problem with the accuracy of mapping between attributes and objects arises due to the issue of proxy representation of related object information and newly added object information in standard IFC. Therefore, in future research, a mapping method for fire safety objects will be developed to ensure accurate representation, and the scope of utilization of the fire safety object diagram will be expanded. Furthermore, efforts will be made to enhance the accuracy of object and task representation. This research is expected to contribute significantly to the technological development of building safety and fire facility design in the future.

• 한국건설관리학회논문집
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• 제14권1호
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• pp.12-22
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• 2013

건설 산업 생애주기 전반에 걸친 정보를 BIM을 활용하여 관리할 수 있게 되었다. 그 중에서도 BIM기반 물량산출은 공사비와 직결되는 중요한 관리 요소로서 사업 타당성 및 경제성 분석을 위한 필수적인 관리 요소 중에 하나이다. 또한, BIM기반 물량산출 Data는 작업자마다 물량산출 결과가 상이하게 나타날 수 있으므로 BIM모델 구축에 대한 정확한 기준이 필요하다. 이러한 BIM기반 물량 산출은 정보의 신뢰성과 정확도 측면에서 매우 중요하다. 따라서 본 연구에서는 BIM기반 물량산출 결과의 정확도 및 신뢰성을 판단하고, BIM 모델링의 현실적이고 바람직한 방법을 제시하고자 단위세대 내부 마감재를 개별부재와 복합부재로 모델링하여 산출되는 BIM기반 물량산출 결과를 정량적으로 비교 검증하였다. 연구의 결과, 정확한 BIM기반 물량산출을 위해서는 다양한 마감재를 개별부재로 모델링하는 것이 바람직하지만, 작업의 생산성 측면에서 보다 현실적인 BIM기반 물량산출을 위해서는 개별부재와 복합부재를 병용하여 모델링 작업을 실시하는 것이 현실적인 BIM 모델링 방법임이 검증되었다.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.169-172
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• 2013

Building Information Modeling (BIM) is an effective decision-making platform that helps to save project cost and enhance quality of construction. By generating and linking a wide variety of objects data, BIM can be effectively utilized, and it should be ensured that object properties maintain consistency throughout the project period of design, estimates, construction, maintenance and repair. This study examined how to utilize BIM data in a construction project, by linking cost and schedule data in web environment, to better utilize the information and maintain consistency of the BIM information. To do so, the model integrated WBS data and CBS data, linked them with BIM model to realize 5D simulation in web environment. As a result, cost and schedule data could be simultaneously acquired, and object properties-cost, schedule, location-as well. These are expected to contribute to developing a BIM-based automatic data-processing system in web environment.

• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1113-1116
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• 2009

The attempt to use a 3D model each field such as design, structure, construction, facilities, and estimation in the construction project has recently increased more and more while BIM (Building Information Modeling) that manages the process of generating and managing building data has risen during life cycle of a construction project. While the 2D Drawing based work of each field is achieved in the already existing construction project, the BIM based construction project aims at accomplishing 3D model based work of each field efficiently. Accordingly, the solution that fits 3D model based work of each field and supports plans in order to efficiently accomplish the relevant work is demanded. The estimation, one of the fields of the construction project, has applied BIM to calculate quantity and cost of the building materials used to construction works after taking off building quantity information from the 3D model by a item for a Quantity Take-off grouping the materials relevant to a 3D object. A 3D based estimation program has been commonly used in abroad advanced countries using BIM. The program can only calculate quantity related to one 3D object. In other words, it doesn't support the take-off process considering quantity of a contiguous object. In case of temporary materials used in the frame construction, there are instances where quantity is different by the contiguous object. For example, the formwork of the temporary materials quantity is changed by dimensions of the contiguous object because formwork of temporary materials goes through the quantity take-off process that deduces quantity of the connected object when different objects are connected. A worker can compulsorily adjust quantity so as to recognize the different object connected to the contiguous object and deduces quantity, but it mainly causes the confusion of work because it must complexly consider quantity of other materials related to the object besides. Therefore, this study is to propose the solution that automates the formwork 3D modeling to efficiently accomplish the quantity take-off of formwork by preventing the confusion of the work which is caused by the quantity deduction process between the contiguous object and the connected object.