• International Journal of Computer Science & Network Security
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• 제21권7호
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• pp.87-92
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• 2021

Analysis of current state of construction industry functioning in Ukraine allows us to identify a number of problems having negative impact on sustainable development of construction industry, especially in terms of its organization. Therefore, it is absolutely essential to study existing methods of organization system supplying construction sites with necessary material resources. Companies can develop their own logistics departments, which independently solve logistics issues related to transportation organization and management, accounting and inventory management, acquisition and warehousing, intercommunication (ability to obtain both final and intermediate information during transporting materials). Using a complex of methods is substantiated: the hierarchy analysis method (Saati's method), the network method, the defect elimination algorithm DEA, the transportation problem that finds optimal problem solutions for construction sector with the purpose of rational supplying uninterrupted construction with building resources in the designed model "provider-transportation-costs".

• 한국터널지하공간학회 논문집
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• 제20권5호
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• pp.823-837
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• 2018

도심지 교통정체를 해소하고 지상공간 활용도를 높이기 위해 세계 각국에서는 단일 면적에 최대 교통량을 확보할 수 있고 저수공간등 다목적 활용이 가능한 복층 터널 건설이 각국에서 진행되고 있다. 최근 국내에서도 복층터널 시공에 대한 수요가 증가하고 있으며 단일 노선 복층터널뿐만 아니라 지중에서의 분 합류부 및 교차로 시공까지 가능한 네트워크형 복층터널 개발 연구가 진행 중에 있다. 네트워크형 복층터널에서 지중 분기부 및 합류부 시공 시 형성되는 필라부는 복층터널 본선부와 분기터널간의 상호 간섭효과에 의해 응력집중이 발생되는 취약부로 지반조건에 따른 보강공법 적용이 필요하다. 본 논문은 강연선을 사용하여 loop 형태로 필라부를 구속함으로써 다축 방향으로 구속력을 발휘할 수 있는 보강공법을 제시하였다. 이 방법의 검증을 위하여 실제 복층터널 필라 형성부와 복층터널 상하부에서의 분기되는 구간을 각각 모델링하여 수치해석을 수행하였다. 이를 통해 적정 필라폭 확보에 대한 방안을 제시하였고 기존 보강방법과의 비교 및 보강효과에 대한 수치해석적 검증을 수행하여 실제 현장 적용 전 복층터널 분기부 시공방안을 강구하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2004년도 학술대회지
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• pp.27-30
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• 2004

The objectives of the present study is to solve problems in PC tile before-fixing method using ordinary concrete by adopting the liquefaction method in manufacturing PC to which the tile before-fixing method is applied, and to provide basic information for the practical use of the PC tile before-fixing method, which uses high workable concrete, through manufacturing a complex body based on the optimal mix proportion,

• 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.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.419-425
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• 2013

Recently AEC industry has required construction automation according to becoming large and complex. Thus BIM-based construction project is increased and used in whole fields of AEC industry. Quantity take-off and estimation fields are important factor for decision-making in conceptual and schematic design stages of construction projects. The purpose of this study improves reliability of the estimation through QTO based on Open BIM. Scope and method to apply QTO is to select conceptual design stage through LoD(Level of Detail) in AEC field and to extract information from BIM model through analysis of IFC structure. This study proceeds three step to make BIM model and check the model quality and calculate QTO. The methodology of QTO using IFC is to verify of result in this study and expects utilizing in design stage of construction projects. The result from this study is expected to decrease the risk factor and time of estimation in the project early phase through improving reliability of schematic estimation.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2004년도 학술.기술논문발표회
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• pp.15-20
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• 2004

To the development on reusing method of the heat-source waste at Daegu Bisan dyeing-complex, this study is aimed to application of it's crushing material (hereafter waste sand) as concrete fine aggregate. The results are as follows; 1. Flow and unit weight of mortar using waste sand as concrete fine aggregate are decreased. 2. At the results of compressive strength test and bending strength test, mortar using waste sand superior to plain mortar within 80％ substitute ratio of waste sand. Because increasing rate of compressive strength is similar through increasing age, waste sand performs as filler's function of no-effect with cement only. 3. At the results of concrete application test, unit weight of concrete using waste sand is similar to plain concrete and compressive strength of concrete is superior to plain likewise the results of mortar test

• 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.

• Coupled systems mechanics
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• 제9권1호
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• pp.29-46
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• 2020

In this paper we deal with stability problems of any complex structure that can be modeled by beam and shell finite elements. We use for illustration the steel plate girders, which are used in bridge construction, and in industrial halls or building construction. Long spans, slender cross sections exposed to heavy loads, are all critical design points engineers must take into account. Knowing the critical load that will cause lateral torsional buckling of the girder, or load that can lead to web buckling, as an important scenario to consider in a design process.Many of such problem, including lateral torsional buckling with influence of lateral supports and their spacing on critical load can be solved by the proposed method. An illustrative study of web buckling also includes effects of position and spacing of transverse and longitudinal web stiffeners, where stiffeners can be modelled optionally using shell or frame elements.

• Architectural research
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• 제3권1호
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• pp.71-80
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• 2001

It is quite difficult to calculate the collapse probability of a system such as statically indeterminate structure that has many possible modes or paths to complete failure and the problem has remained essentially unsolved. A structure is synthesized by several components or elements and its capacity to resist the given loads is a function of the capacity of the individual element. Thus it is reasonable to assess the probability of failure of the system based upon those of its elements. This paper proposes an efficient technique to directly assess the reliability of a complex structural system from the reliabilities of its components or elements. The theory for the calculation of the probability of a structural system is presented. The target requirements of the method and the fundamental assumptions governing the method are clearly stated. A portal frame and two trusses are selected to demonstrate the efficiency of the method by comparing the results obtained from the proposed method to those from the existing methods in the literature.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2010년도 춘계학술대회 논문집
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• pp.1513-1517
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• 2010

Recently, the important of Progress Management is being emphasized because construction have become more complex and increasingly specialized. The existing progress control method needs to be changed because only numerical information is being provided and is very difficult to understand all poor progress. To resolve these problem, this study suggests a simulation method for progress management by using 4D CAD System because 4D CAD system has effective functions to convert numerical information to visualized information. The suggested simulation method not only are reviewed an application of railway construction but enables managers to understand problems in managing this system for verifying the suggested simulation method.