철근콘크리트골조 BIM기반 수량산출 및 견적 가이드라인 수립

주선우,김치경,김시욱,노준오 한국전산구조공학회 2017 한국전산구조공학회논문집 Vol.30 No.6

본 연구는 BIM 도입 효과를 극대화할 수 있는 현장 적용성 확보에 중점을 둔 철근콘크리트 골조공사의 BIM 견적모델 작성과 BIM기반 견적 업무 프로세스를 표준화한 가이드라인을 제시하는 것을 목적으로 한다. 이를 위하여 기존 지침 및 가이드라인의 BIM 견적모델 작성 범위 및 방식을 고찰하고, 철근콘크리트공사 수량산출·견적 지침 및 기준을 분석하며, 기존 견적 방식과 BIM기반 견적 방식에 대해 비교분석한다. 이를 통하여 BIM기반 견적 업무의 표준 프로세스를 수립하고, 콘크리트/거푸집/철근 견적모델의 작성 및 수량산출 기준을 도출하며, 철근콘크리트공사 BIM기반 수량산출 및 견적 업무의 성과물 목록 및 양식을 제시한다. 본 연구를 통해 작성된 BIM 견적 가이드라인은 BIM기반의 새로운 기술환경에 대한 진입장벽을 낮추고, 견적의 정확성 극대화를 통한 원가절감을 실현하며, BIM 업무와 건설산업의 생산성과 부가가치를 증대시켜, 궁극적으로 건설사업 전 생애주기에서 생산되는 정보를 통합 관리할 수 있는 기반을 구축하고 BIM 생태계를 조성하는데 기여할 것으로 기대한다. The object of this research is an establishment of BIM-based quantity takeoff(QTO) and cost estimation guidelines for reinforcement concrete structures focused on improvement of field applicability in transition period from 2D drawing-based environment to 3D BIM-based environment. Preliminary studies on existing guidelines and standards for BIM modeling, QTO and cost estimation of reinforcement concrete structures are performed, and then a standardization of BIM-based cost estimation process is proposed through comparative analysis between 2D drawing-based cost estimation process and 3D BIM-based. In addition, modeling, QTO, and cost estimation processes of cost-BIM model for RC structures are conducted. The contributions of this research and the guidelines suggested by this research are 1) lowering barriers to entity to the new BIM-based environment for small size companies, 2) reducing construction cost by a close estimate, 3) establishing the foundation for integrated management of informations through construction project life cycle, 4) and ultimately, developing the BIM ecosystems.

BIM 기반 LLM 모델 개발을 위한 학습 데이터 처리와 파인튜닝 프로세스 개발

강태욱 한국산학기술학회 2024 한국산학기술학회논문지 Vol.25 No.11

최근, 발전 중인 생성 AI 기술인 LLM(Large Language Model)은 건설을 포함한 다양한 산업 분야에 많은 관심을 받고 있다. 본 연구는 건설 분야에서 데이터 허브 역할을 하는 BIM(Building Information Modeling)을 LLM과 효과적으로 연계하여, BIM 기반 의사결정시스템 구현 시 필요한 전문가 시스템의 핵심 기술로서 LLM 기술 적용 가능성을 연구하고자 한다. BIM 지식 전문가 시스템 개발의 관점에서 보면, LLM을 효과적으로 활용하기 위해서는 과도한 학습 데이터 개발 비용, 환각 문제 등을 해결해야 한다. 본 연구는 이런 문제를 해결하기 위해 BIM 기반 LLM 모델 개발을 위한 학습 데이터 처리와 파인튜닝 프로세스를 제시한다. 이후, 프로토타입을 개발하고, 성능을 비교 분석하여, BIM기반 LLM모델 개발 시 고려사항을 도출한다. 이를 통해, 제시한 방법의 효율성, 한계점 및 향후 연구방향을 기술하였다. 프로토타입 개발을 통한 성능 분석 결과, BIM기반 LLM은 학습 컨텐츠의 맥락 내에서 유사한 결과를 요약해 생성하는 것을 확인할 수 있었다. 좋은 BIM 기반 LLM모델 성능을 위해서는 고품질 학습 데이터셋 및 파인튜닝 기법 개발이 중요하다. Recently, LLM (Large Language Model), a generative AI technology under development, has attracted considerable attention in various industries, including construction. This study examined the possibility of applying LLM technology as a core technology of the expert system required for implementing a BIM (Building Information Modeling)-based decision-making system by effectively linking BIM, which acts as a data hub in the construction field, with LLM. From the perspective of developing a BIM knowledge expert system, excessive learning data development costs and hallucination problems must be solved to utilize LLM. This study presents learning data processing and fine-tuning processes for developing a BIM-based LLM model to solve these problems. Subsequently, a prototype was developed. The performance was compared, and the considerations for developing a BIM-based LLM model were derived. Through this, the efficiency, limitations, and future research directions of the proposed method are described. Performance analysis through prototype development confirmed that BIM-based LLM summarizes and generates similar results within the context of the training dataset. For good BIM-based LLM model performance, high-quality learning datasets and fine-tuning technique development are important.

오픈 소스 BIM서버를 활용한 비용 효과적인 GIS기반 BIM 객체 가시화 시스템 아키텍처 설계

강태욱,홍창희 대한공간정보학회 2014 Spatial Information Research Vol.22 No.1

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.

BIM을 활용한 VE/LCC/LCA 평가 모형 개발

최형래,김현승,강인석,김창학 한국도로학회 2020 한국도로학회논문집 Vol.22 No.6

PURPOSES : This study aimed to provide a method for linking VE/LCC/LCA and BIM and to develop a system for BIM-based VE/LCC/ LCA evaluation. METHODS : Based on literature reviews and case studies, we propose bridge hierarchies for sharing and integrating VE/LCC/LCA and BIM information and standard unit price and equipment workloads for LCC and LCA analysis. We further developed a BIM library to visualize various ideas and alternatives. RESULTS : The results of the proposed system demonstrate that the VE can be systemized and the original draft and alternatives can be visually provided via the BIM library. In addition, the LCC cost can be calculated by the automatic volume calculation of the bridge BIM library and the LCA can be calculated using the materials and equipment (these are BIM attribute information). CONCLUSIONS : The developed method can be more reliable and productive of VE, LCC, and LCA work owing to the partial automation and visualization of the developed system.

BIM 협업 조직 및 정보관리 방식에 관한 사례연구

원종성(Won Jong-Sung),이정주(Lee Jeong-Joo),이강(Lee Ghang) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.8

As information technology and the skills of communication rapidly advance, the number of BIM implementations in the field is also increasing. Collaboration and communication among project participants are important factors of BIM implementation. In this paper, we discussed collaboration and information management in BIM implementation based on case studies we conducted of successful international projects implementing BIM. The size of the project is more extensive than the previous one, so legal liability among the participants was higher. Because reuse and sharing of information are important in the BIM process, the minimizing of conflicts is a key factor for success. The master BIM model centers on information exchange and coordination of BIM collaboration. Successful projects require the efficient management of the master BIM model. Project managers must therefore make information mangers like Digital Design Director (DDD)or organizations that are in charge of information exchange, coordination, and changed models. Also, project mangers introduced the integrated project delivery method to help consultants and construction companies participate in the design phase. The integrated project delivery method can boost the efficient progress of projects. BIM implementation in Korea is at an early stage compared to other developed countries. As BIM spreads rapidly in Korea, we expect that difficulties in collaboration among participants will also increase, as it did in the international projects we examined. For future construction projects to go smoothly without any communication difficulties, I believe the Korean construction industry needs to accept management of the master BIM model, information exchange, and coordination of the BIM process, each of which is discussed in the case study of this paper.

발주단계에서 BIM의 적용수준 설정을 위한 SLA 기반의 BIM 서비스에 관한 기초연구

김지윤 ( Ji Yun Kim ),윤석헌 ( Seok Heon Yun ) 한국건축시공학회 2016 한국건축시공학회 학술발표대회 논문집 Vol.16 No.1

Recently policy and clouding system to mandate the introduction of BIM in construction industry, various sensors technology, BIM in ICT technology and fusion, such as 3D scanning and printing technology has been further activated. However, the expression level of diversification associated with it, plan within one of the BIM project, design, engineering, it is difficult to have a different application has been consistent for each field, such as construction. Thus fell the efficiency of BIM apply, it is difficult to determine the appropriate level of BIM in the business early stage in order destination of position. In this study, in order to solve this problem, by utilizing SLA used in the IT field, it attempts to explore scheme which can be evaluated targeted level of BIM suitable for business in the planning phase.

중국 BIM 표준의 현황과 특성에 관한 사례 분석

신규철(Shin, Kyoo-Chul) 한국BIM학회 2018 KIBIM Magazine Vol.8 No.3

The Standard for BIM in Construction of China was released in 2017. The Unified Standard for BIM of China also took effects on 2017. The BIM standards of China needs to be compared with those related guidelines of Korea to find the status and characteristics for future development of BIM application in both countries’ construction industries. The research methodology is a case study of comparing various standards of both countries. The case study results reveals many interesting issues for future BIM application and guidelines for practice of design and construction process. The research foundings include followings : LOD (Level of development) are well defined including LOD 350 in Chinese Standard. P-BIM(Practice based BIM) concepts and series of standards are set for the welldefined design and construction process by work stage in China. Korean standards shows more processes of design and documentation in detail. Major three aspects, particularity in BIM standard by work trade, practicality in BIM work process of design and construction, and professionality in subjects of BIM application, are analyzed and compared with various Guidelines of BIM in both countries.

토목인프라 산업의 BIM적용 사례연구

김민지(Min Ji Kim),이경희(Kyoung Hee Lee),권석현(Suk Hyun Kwon),박성일(Seong Il Park),이상철(Sang Cheol Lee) 한국철도학회 2014 한국철도학회 학술발표대회논문집 Vol.2014 No.10

국내는 일본 등 해외와 비교해 철도·도로·교량·항만·수도 등 인프라 산업분야의 BIM적용이 미미한 실정이었으나, 최근 업계 관계자들의 관심이 높아짐에 따라 인프라 BIM관련 연구 및 사업적용이 활발해지고 있다. 그러나 토목분야의 BIM활용은 건축분야에 비해 대상 범위가 넓고 선형에 대한 의존도가 큼에 따라 표준 라이브러리 구축 및 활용이 힘든 것이 현재까지도 한계점으로 남아있다. 이 때문에 현재 국내의 BIM 적용은 공정데이터를 통한 2D 모델을3D 모델로 가시화하여 4D 공정데이터를 연계하는 하드웨어적 측면에 집중하는 한계점을 갖고 있지만, 정확한 3D 모델링을 통한 4D 공정데이터의 연계는 필수라고 할 수 있다. 본 연구에서는 철도시설물의4D 시뮬레이션 및 MEP 구현을 통해BIM 적용의 가장 기본적이나 필수적인 방법의 접근으로 철도시설물의 BIM사례적용 Data base 축적에 기여하였다. Korea’s application of infrastructure industries BIM such as railways·roads·bridges·ports·city water has been insignificant comparing to other countries including Japan, but as recent industry insiders’ interests are increasing, there are active infrastructure BIM related study and business applications. However, BIM application of public sector has wider target range comparing to construction sector, and as its dependence on a sector, standard library construction and application is not easy so that it remains as a limitation up to today. Because of this reason, while BIM application of Korea now has a limitation that it needs to be visualized from 2D model to 3D model through process data to focus on hardware aspect which connects to 4D process data, connection of 4D process data through accurate 3D modeling is essential. This study contributes to BIM case application Data base accumulation of railway facilities with a very basic but essential approach of BIM application through 4D simulation and M EP implementation of railway facilities.

소규모 건축공사의 BIM 정보 활용을 위한 프로세스 제안 - 철골공사 중심으로 -

김진광(Kim, Jin-Kwang),유무영(Yoo, Moo-Young),함남혁(Ham, Nam-Hyu),김재준(Kim, Jae-Jun),최창식(Choi, Chang-Shik) 한국BIM학회 2018 KIBIM Magazine Vol.8 No.2

The current study focused on the utilization of building information modeling (BIM) data in steel-frame structures, which help to reduce project durations because they employ prefabricated structural members that are assembled on-site. In addition, a business process model was proposed using BIM data collected during the preconstruction, structural steel fabrication, and on-site construction phases of an actual steel-frame project. The ultimate expectation is that BIM data support at each phase, as well as the increased understanding among project participants, will result in an increase in project management productivity. The results from the current study are summarized as follows: To implement a BIM capable of application to steel-frame projects and data utilization, existing theories were studied to develop the construction project steps, both generally into the preconstruction (A1), steel fabrication (A2), and on-site construction phases, (A3) and specifically into 19 BIM-applicable phases. Based on the derived BIM-applicable phases, the model elements of the BIM object were identified, and the shortcomings of existing steel-frame projects were ameliorated, resulting in an improved data flow model. Moreover, for the proposed BIM data flow to progress efficiently, the BIM specialist needs to be well-acquainted with the phase-specific three-dimensional (3D) model output, and the infrastructure to construct an error-free 3D model must be provided. Based on the actual construction example, the BIM data utilized steel-frame projects - via production reports, clash checks, two-dimensional (2D) drawings, four-dimensional (4D) simulations, and 3D scanning - to make cooperation and communication among participants easier.

중소 건설업체의 BIM 도입가이드

강재규(Gang Jae-Gue),임재한(Lim, Jae-Han),박기현(Park, Ki-Hyun),박영식(Park Young-Shik) 한국BIM학회 2017 한국BIM학회 학술대회 논문집 Vol.2017 No.-

Building Information Modeling (BIM) is a digital facility representation of the physical and functional characteristics, and is the process of creating, using, and maintaining shared knowledge resources as a tool for making decisions throughout the facility s life cycle. The expected benefits from the early introduction of BIM were ideal, but large construction companies, which initially invested a lot of money, are also cutting costs and are looking for alternatives with Small-BIM. In order to introduce BIM without failure, medium-sized construction companies(MSCC) lacking expertise, financial strength, and organizational capacity compared to large corporations, this study examines the introduction cases of MSCC and suggests obstacles and solutions to those problems. 1. Current market situation of BIM - The stage of re-examination of the BIM field, 2. Application of BIM to MSCC - Minimizing the risk. 3. Barriers to introducing BIM - Initial investment cost, additional work, professional manpower, lack of information, etc. 4. Solutions to the obstacles to introducing BIM - Selection of programs and systems, how to establish relations with the field management, how to secure BIM personnel, etc. 5. BIM Utilization of MSCC - Daehan Steel, Digital Design Lab, etc. 6. IS-Dongseo BIM - Pilot Project, Tool Selection, TFT Operation, Future Plans, etc. 빌딩정보모델링(BIM)은 시설물의 물리적, 기능적 특성을 디지털로 표현한 것이며, 시설의 생애주기 전반에 건친 의사 결정을 위한 도구로써 공유 지식 리소스를 생성, 사용 및 유지하는 프로세스이다. 초기의 BIM의 도입으로 인한 예상된 이익은 매우 이상적이었으나 초기에 많은 비용을 투자했던 대형건설업체들도 비용을 축소하고 있으며 스몰빔으로 대안을 찾고 있다. 대기업에 비해 전문가, 자금력, 조직 여력이 부족한 중소건설업체가 실패 없이 BIM을 도입하기 위해서 본연구에서는 중견업체 도입 사례들 검토하고 도출되었던 장애요인과 해소방안을 제시하고자 한다. BIM 현 시장상황 - BIM 분야에 대한 재조명 단계이며, 성과위주의 기술개발과 업무 진행 중견시공사의 BIM적용 - 리스크 최소화 BIM도입 장애 요인 - 초기투자비용, 추가업무, 전문 인력, 정보부족, 등 BIM도입 장애요인 해소방안 - 프로그램 및 시스템 선정, 현장관리와의 관계 설정 방법, BIM 인력 확보 방안 등중견사의 BIM 도입활용 - 대한제강, Digital Design Lab 등 IS 동서의 BIM – 파일럿 프로젝트, Tool선정, TFT의 운영, 추후 진행 계획 등