• Title/Summary/Keyword: Building Object

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A Framework Development for BIM-based Object-Oriented Physical Modeling for Building Thermal Simulation (객체지향 물리적 모델링 기법을 활용한 BIM기반 통합 건물에너지 성능분석 모델 구축 및 활용을 위한 프레임워크 개발 - 건물 열부하 시뮬레이션 중심으로 -)

  • Jeong, WoonSeong
    • KIEAE Journal
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    • v.15 no.5
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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.

Extension of IFC information Modeling for Fire Safety based on WBS (작업분류체계 기반 소방 객체 IFC 정보 모델링 확장 방안 연구)

  • Won, Junghye;Kim, Taehoon;Choo, Seoungyeon
    • Journal of KIBIM
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    • v.13 no.2
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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.

AN AUTOMATED FORMWORK MODELING SYSTEM DEVELOPMENT FOR QUANTITY TAKE-OFF BASED ON BIM

  • Seong-Ah Kim;Sangyoon Chin;Su-Won Yoon;Tae-Hong Shin;Yea-Sang Kim;Cheolho Choi
    • International conference on construction engineering and project management
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    • 2009.05a
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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.

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The Necessity of Development of BIM-Based Object Library for the Improvement of Effectiveness in Maintenance Work (유지관리 업무 효율성 향상을 위한 BIM기반 유지관리 시설물 객체 라이브러리 구축 개발의 필요성)

  • Kim, Ka-Ram;Lim, Chul-Woo;Yu, Jung-Ho
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2010.05a
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    • pp.231-234
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    • 2010
  • Recently, the construction industry has been changed more highly and complicacy. According to this, several informational systems of maintenance are introduced suitable the work and the purpose of each maintenance. However there are some problems in the manage the information of maintenance management by without the standization and systematic management of variable information from building life-cycle. This paper purposed the process of creation or management of information which is used for present maintenance through IFC-based facilities object library development is suggested for work efficiency of maintenance management. In addition, it can minimize the reproduce the same information unnecessarily. Fainally, it makes information compatibility through the building life-cycle highly by define the IFC-based object information and standardize the format of information.

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A Sharing Scheme for Connection Mamagement Objects in Different Distributed Processing Environments (이기종 분산처리환경상에서 연결관리 객체의 정보공유)

  • 신영석;오현주
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.22 no.4
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    • pp.793-803
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    • 1997
  • Open networking architecture is required to support new multimedia services as integrated functions of network management and service architecture. In this paper, we propose the methodology of building block modeling using object grouping concepts and the sharing scheme of different distributed processing environments based on open networking architecture. The building block has the functions of object management, security object instance registry and object mapping in object group. It is necessary for the connection management information to be shared on the interworking between two domains. We implemented and validated connection management functions using computational object modeling and building block modeling in different distributed processing environments.

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Intelligent Hoist Control Based on Computer Vision

  • Seokhyeon Jin;Dabin Lee;Dohyeong Kim;Chansik Park;Dongmin Lee
    • International conference on construction engineering and project management
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    • 2024.07a
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    • pp.1096-1102
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    • 2024
  • Construction hoists are essential equipment for vertical lifting of workers and materials on construction sites, and their efficient operation significantly impacts the success of construction projects. To optimize hoist operation, it is crucial to accurately understand the call situation on each floor (i.e., the external waiting state) and the internal state of the hoist. This study aims to use object detection technology to monitor the status of workers and materials waiting on each floor, as well as the boarding state inside the hoist in real-time. Subsequently, by utilizing the real-time gathered information, a model was developed to reduce the number of stops, thereby demonstrating the potential of object detection technology in reducing the hoist's transportation time. The research results show that it is possible to determine the number of workers, the types of materials, and the quantity of materials to board the hoist using object detection, and to derive an optimized route. Consequently, it demonstrates that the use of object detection can reduce the transportation time of the hoist, thereby improving its operational efficiency.

Application of Classification of Object-property Represented in Korea Building Act Sentences for BIM-enabled Automated Code Compliance Checking (BIM기반 설계 품질검토 자동화를 위한 건축 관련 법규문장의 객체 및 속성 표현에 대한 체계화 접근방법)

  • Shin, Jaeyoung;Lee, Jin-Kook
    • Korean Journal of Computational Design and Engineering
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    • v.21 no.3
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    • pp.325-333
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    • 2016
  • This paper aims to classify objects and their properties represented in Korea Building Act sentences for applying to BIM-enabled automated code compliance checking task. In order to conduct automated code compliance checking, it is necessary to develop translation process of converting the building act sentences into computer-executable forms. However, since Korea building act sentences are written in natural language, some of requirements are ambiguous to translate explicitly. In this regard, the building act sentences regarding building permit requirements are analyzed focusing on the regulation-specific objects and related properties representation from noun phrases within the scope of this paper. From 1977 building act sentences and attached reference regulations, 1200 regulation-specific objects and about 220 related properties are extracted and classified. In the application for the classification, object-property database is implemented and some of application using the database and the regulation-specific classification is suggested to support to generate rule set written in computable codes.

A House Design Automation System Based on the "Design-by-Novice" Paradigm

  • Kim, Uk;Choi, Jinwon;Kim, SungAh
    • Architectural research
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    • v.1 no.1
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    • pp.23-30
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    • 1999
  • This research investigates a system for house design automation. The system is based on an object-oriented building data model, aiming to support the house design process conducted by non-expert users. Its object model, with simple yet powerful user interfaces, enables a CAD system to handle a complicated building system with much ease. Hence, the model dramatically simplifies the design process beyond just the automatic document generation. In this paper, we discuss the aspects of the building data model, introduce critical concepts such as grid objects and structured floor plan, and present a prototype system called GPLAN. The system is implemented in the framework of our building data model, and it provides a host of intelligent features that have been proved useful for house design automation.

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Object-Parameter Integrated Schematic Estimation Model for Predicting Office Building Interior-finishing Costs (오브젝트-파라미터 통합 오피스 마감공사비 개산견적 모델)

  • Park, Sung-Ho;Koo, Kyo-Jin;Park, Sung-Chul
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2008.11a
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    • pp.159-165
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    • 2008
  • For deciding the profitability and feasibility of the construction project, the schematic estimation has to not only link the design decision-making but also estimate the cost with reliability. The Object-based schematic estimation system was developed for easily linking with design-making and supports to evaluate the design alternatives in the design development stage but didn't consider the cost estimated by object supplementary and parameter work item. This research presents the Integrated Object-Parameter Schematic Estimation Model in the design development stage that can lead to more accurately estimate the cost through analyzing historical data from the high-storied office buildings. For the development of the proposed model for schematic estimation, after analyzing and classifying the work items from the Bills of Quantities(BOQs) and drawings of historical data, this research proposed the methods of estimating cost in accordance with attributes of each work item using regression analysis. In addition, a case study is performed for the effectiveness as comparing the proposed model with the previous estimating model.

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Study on 3D Object (Building) Update and Construction Method for Digital Twin Implementation (디지털 트윈 구현을 위한 3차원 객체(건물) 갱신 및 구축 방안 연구)

  • Kwak, Byung-Yong;Kang, Byoung-Ju
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.44 no.4
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    • pp.186-192
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    • 2021
  • Recently, the demand for more precise and demand-oriented customized spatial information is increasing due to the 4th industrial revolution. In particular, the use of 3D spatial information and digital twins which based on spatial information, and research for solving social problems in cities by using such information are continuously conducted. Globally, non-face-to-face services are increasing due to COVID-19, and the national policy direction is also rapidly progressing digital transformation, digitization and virtualization of the Korean version of the New Deal, which means that 3D spatial information has become an important factor to support it. In this study, physical objects for cities defined by world organizations such as ISO, OGC, and ITU were selected and the target of the 3D object model was limited to buildings. Based on CityGML2.0, the data collected using a drone suitable for building a 3D model of a small area is selected to be updated through road name address and building ledger, which are administrative information related to this, and LoD2.5 data is constructed and urban space. It was intended to suggest an object update method for a 3D building among data.