• 제목/요약/키워드: Complex Geometry Building

검색결과 28건 처리시간 0.022초

Spatial and temporal distribution of driving rain on a low-rise building

  • Blocken, Bert;Carmeliet, Jan
    • Wind and Structures
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    • 제5권5호
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    • pp.441-462
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    • 2002
  • This paper presents a practical numerical method to determine both the spatial and temporal distribution of driving rain on buildings. It is based on an existing numerical simulation technique and uses the building geometry and climatic data at the building site as input. The method is applied to determine the 3D spatial and temporal distribution of wind-driven rain on the facade a low-rise building of complex geometry. Distinct wetting patterns are found. The important causes giving rise to these particular patterns are identified : (1) sweeping of raindrops towards vertical building edges, (2) sweeping of raindrops towards top edges, (3) shelter effect by various roof overhang configurations. The comparison of the numerical results with full-scale measurements in both space and time for a number of on site recorded rain events shows the numerical method to yield accurate results.

비정형 건축물의 스마트건설을 위한 BIM 활용에 대한 연구 - 세종포천선 처인휴게소 시공사례 (Research on the use of BIM for smart construction of Complex Geometry buildings)

  • 박양흠;남동훈;김병수;박정준;김성진
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2023년도 가을학술발표대회논문집
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    • pp.53-54
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    • 2023
  • Because irregular shaped buildings are designed with various three-dimensional curves, the difficulty of design and construction is very high, and more construction drawings are needed to reduce construction errors. General 2D drawings may have limitations in conveying the information necessary for construction. By utilizing BIM, it is possible to three-dimensionally design parts that are not expressed on 2D drawings and additional structurall components required for the construction of the curved exterior finishing materials. This study examines the necessity of BIM at the construction stage, its performance through it, and how it can be linked to smart construction technology through construction BIM being applied to the new construction site of Sejong-Pocheon Line Cheoin Rest Area.

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Knowledge Support and Automation of Paneled Building Envelopes for Complex Buildings using Script Programming

  • Park, Jungdae;Im, Jinkyu
    • 국제초고층학회논문집
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    • 제4권1호
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    • pp.85-90
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    • 2015
  • Advances in the technology of computational design are giving architects and engineers the opportunity to analyze buildings with complex geometries. This study explores the optimization and automation process using the parametric design method, and uses digital tools to achieve surface representation and panelization for curved shaped office buildings. In this paper, we propose parametric algorithms of dimensional and geometric constraints using the Knowledge-ware scripts embedded in Gehry Technologies' Digital Project. The knowledge-based design methods proposed in this study can be used to systemize the knowledge possessed by experts in the form of data. Such knowledge is required to promote collaboration between designers and engineers in the process of CAD/CAE/CAM. The aim of this study is to integrate the process into design, which establishes an integrated process. This integration enables two-way feedback between design and construction data by combining the methods used in designing, engineering, and construction.

Form Follows Function - The Composite Construction and Mixed Structures in Modern Tall Buildings

  • Peng, Liu
    • 국제초고층학회논문집
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    • 제3권3호
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    • pp.191-198
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    • 2014
  • The tall building and super tall building has been a common building type in China, with multiple functions and complex geometry. Composite construction is broadly used in tall building structures and constitutes the mixed structure together with concrete and steel constructions. The mixture of the constructions is purposely designed for specific area based on the analysis results to achieve the best cost-effectiveness. New types of composite construction are conceived of by engineers for columns and walls. Material distribution is more flexible and innovative in the structural level and member level. However the reliability of computer model analysis should be verified carefully. Further researches in the design and build of composite construction are necessary to ensure the success of its application. Composite or Mixture Index is suggested to be used as a performance benchmark.

비정형 건축물 구현을 위한 Digital Fabrication의 활용방법 연구 -롯데월드타워 3D 포디움 시공사례- (Study of Freeform Buildings using the Digital Fabrication)

  • 김성진;박영미;박정준
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2017년도 추계 학술논문 발표대회
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    • pp.52-53
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    • 2017
  • Through the case study, we surveyed an applicability of digital fabrication in irregular-shaped building construction project. By digital fabrication, we mean is a precision manufacturing method has been used in aircraft, ship and car manufacturing industry. We collected construction-completed "LotteWorld Tower Podium" project data and analyzed its process in terms of construction quality andduration. The result shows that digital fabrication is considered a competitive technology that enabled to complete the project in seven months within 3mm surface curvature threshold. The digitalfabrication is expected to apply on a number of irregular-shaped building construction project.

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수평필릿용접의 용접부 형상을 예측하기 위한 수학적 모델링 및 열전달 해석에 관한 연구 (A study on mathematical modeling and heat transfer analysis to predict weld bead geometry in horizontal fillet welding)

  • 문형순;나석주
    • Journal of Welding and Joining
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    • 제14권6호
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    • pp.58-67
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    • 1996
  • The horizontal filet welding is prevalently used in heavy and ship building industries to join the parts. The phenomena occurring in the horizonal fillet welding process are very complex and highly non-linear, so that its analysis is relatively difficult. Furthermore, various kinds of weld defect such as undercut, overlap, porosity. excess weld metal and incomplete penetration can be induced due to improper welding conditions. Among these defects, undercut, overlap and excess weld metal appear frequently in horizontal filet welding. To achieve a satisfactory weld bead geometry without weld defects, it is necessary to study the effect of welding conditions in the weld bead geometry. For analyzing the weld bead geometry with and without weld defects in horizontal fillet welding, a mathematical model was proposed in conjunction with a two-dimensional heat flow analysis adopted for computing the melting tone in . base metal. The reliability of the proposed model was evaluated through experiments. which showed that the proposed model was very effective for predicting the weld bead shape with or without weld defects in horizontal fillet welding.

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Pedestrian wind conditions at outdoor platforms in a high-rise apartment building: generic sub-configuration validation, wind comfort assessment and uncertainty issues

  • Blocken, B.;Carmeliet, J.
    • Wind and Structures
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    • 제11권1호
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    • pp.51-70
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    • 2008
  • CFD is applied to evaluate pedestrian wind comfort at outdoor platforms in a high-rise apartment building. Model validation is focused on generic building sub-configurations that are obtained by decomposition of the actual complex building geometry. The comfort study is performed during the design stage, which allows structural design changes to be made for wind comfort improvement. Preliminary simulations are performed to determine the effect of different design modifications. A full wind comfort assessment study is conducted for the final design. Structural remedial measures for this building, aimed at reducing pressure short-circuiting, appear to be successful in bringing the discomfort probability estimates down to acceptable levels. Finally, the importance of one of the main sources of uncertainty in this type of wind comfort studies is illustrated. It is shown that the uncertainty about the terrain roughness classification can strongly influence the outcome of wind comfort studies and can lead to wrong decisions. This problem is present to the same extent in both wind tunnel and CFD wind comfort studies when applying the same particular procedure for terrain relation contributions as used in this paper.

디지털 패브리케이션을 활용한 비정형 건축물의 시공공법 고찰 (Review of Freeform Buildings using the Digital Fabrication)

  • 김성진;박영미;박성진;박기홍
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2015년도 추계 학술논문 발표대회
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    • pp.175-176
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    • 2015
  • Starting from Guggenheim Bilbao Museum in 1997, it has been increased steadily that complex geometry buildings using digital designs and construction process. Since 2010, the domestic Freeform design has been widely used for buildings such as Dongdaemoon Design Plaza, Seoul City Hall, Tri-Bowl, and etc. But there are many defects such as the increased cost and period of construction, and the declined quality of construction because of the lack of optimized method and engineering experiences. Therefore, this study has an effort to review case study of the recent freeform buildings and construction methods using digital fabrications. And this study proposed the improve method for the construction quality for freeform buildings.

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BIM/IFC 파일로부터 건물요소의 형상모델 추출에 관한 연구 (Extracting Building Element Geometry from BIM/IFC Physical Files)

  • 고일두;최중현;김이두;이재민
    • 한국전산구조공학회논문집
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    • 제22권2호
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    • pp.163-172
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    • 2009
  • 3차원 패러매트릭 기반 솔리드모델링 방법으로 형상을 표현하고 건설산업분야에서 요구되는 다양한 정보를 처리할 수 있는 BIM기술은 2차원 도면의 자동생성, 건축요소들간의 간섭검토와 물량산출 이외에도 건물내 외 공간분석 및 관리, 구조해석 및 설계, 에너지 분석, 즉시조달, 시설물 및 재난 관리, 법규검토 등을 위한 고급 엔지니어링 업무까지 지원할 수 있게 한다. 본 논분은 이러한 IFC기반 BIM 기술을 건설분야의 각 임무에 작용하기 위하여 근원이 되는 각 건물요소의 기하형상을 추출하기 위한 연구내용을 제시하고 구현된 프로그램에 의한 적용사례를 보여준다.

Modal parameter identification of civil structures using symplectic geometry mode decomposition

  • Feng Hu;Lunhai Zhi;Zhixiang Hu;Bo Chen
    • Wind and Structures
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    • 제36권1호
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    • pp.61-73
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    • 2023
  • In this article, a novel structural modal parameters identification methodology is developed to determine the natural frequencies and damping ratios of civil structures based on the symplectic geometry mode decomposition (SGMD) approach. The SGMD approach is a new decomposition algorithm that can decompose the complex response signals with better decomposition performance and robustness. The novel method firstly decomposes the measured structural vibration response signals into individual mode components using the SGMD approach. The natural excitation technique (NExT) method is then used to obtain the free vibration response of each individual mode component. Finally, modal natural frequencies and damping ratios are identified using the direct interpolating (DI) method and a curve fitting function. The effectiveness of the proposed method is demonstrated based on numerical simulation and field measurement. The structural modal parameters are identified utilizing the simulated non-stationary responses of a frame structure and the field measured non-stationary responses of a supertall building during a typhoon. The results demonstrate that the developed method can identify the natural frequencies and damping ratios of civil structures efficiently and accurately.