• Title/Summary/Keyword: design methodologies

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Structural Design of Coupled RC Structural Wall Considering Plastic Behavior (소성거동을 고려한 병렬 RC 구조벽체시스템의 설계)

  • Yu, Seung-Yoon;Eom, Tae-Sung;Kang, Su-Min
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.30 no.4
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    • pp.351-361
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    • 2017
  • Reinforced concrete(RC) structural walls are major lateral load-resisting structural member in building structures. Generally these RC structural walls are coupled with each other by the coupling beams and slabs, and therefore they behave as RC coupled structural wall system. In the design of these coupled structural wall systems, member forces are calculated using elastic structural analysis. These elastic analysis methodologies for the design of coupled structural wall system was not reasonable because it can not consider their ultimate behavior and assure economic feasibility. Performance based design and moment redistribution method to solve these problems is regarded as a reasonable alternative design method for RC coupled structural wall system. However, it is not verified under various design parameters. In this study, nonlinear analysis of RC coupled structural wall system was performed according to various design parameters such as reinforcement ratio, ultimate concrete strain and wall height. Based on analysis results, design considerations for coupled RC structural wall system was proposed.

A Study on the Development of CACD(Computer Aided Clothing Design) and the Present Condition Applied for Industry (CACD(Computer Aided Clothing Design)의 발달 및 산업계의 적용 현황에 대한 고찰)

  • Wu, Se-Hee;Choy, Hyon-Sook
    • Journal of the Korea Fashion and Costume Design Association
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    • v.11 no.1
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    • pp.87-97
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    • 2009
  • A technology in development called CACD (Computer Aided Clothing Design) can reproduce fashion shows by utilizing computers, and is of particular interest. Considering the growth potential of this area, the purpose of this study is to present the development potentials that CACD technology will bring to the fashion area and to promote the diversity of the fashion industry. This will be realized by identifying the current status of CACD and its reach in the field of Fashion, followed by an in-depth analysis of its application. The methodologies employed in this study are as follows; in-depth study of related literature, field research of business firms, and investigation on Internet data. For the systematic advance of CACD, the development of user-friendly programs for 3D clothing design is of the utmost priority. The four technologies that should be intensively developed to enhance the development of the clothing industry through the utilization and commercialization of CACD are as follows; First, technology capable of performing accurate three-dimension measurement of the human body is needed. Second, technology which realizes automatic pattern formation is needed. Third, the nature physical properties of the material and textile design when applied to pre-formed patterns must be expressed similarly to the real thing. Last of all, an integrative technology which can conduct fast and accurate clothing simulations must be developed.

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Analysis and Prediction for Abutment Behavior of Prestressed Concrete Girder Integral Abutment Bridges (프리스트레스트 콘크리트 거더 일체식 교량의 교대 거동 해석과 예측)

  • Kim, Woo-Seok
    • Journal of the Korea Concrete Institute
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    • v.23 no.5
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    • pp.667-674
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    • 2011
  • This paper discusses the analysis method of prestressed concrete girder integral abutment bridges for a 75-year bridge life and the development of prediction models for abutment displacements under thermal loading due to annual temperature fluctuation and time-dependent loading. The developed nonlinear numerical modeling methodologies considered soil-structure interaction between supporting piles and surrounding soils and between abutment and backfills. Material nonlinearity was also considered to simulate differential rotation in construction joints between abutment and backwall. Based on the numerical modeling methodologies, a parametric study of 243 analysis cases, considering five parameters: (1) thermal expansion coefficient, (2) bridge length, (3) backfill height, (4) backfill stiffness, and (5) pile soil stiffness, was performed to established prediction models for abutment displacements over a bridge life. The parametric study results revealed that thermal expansion coefficient, bridge length, and pile-soil stiffness significantly influenced the abutment displacement. Bridge length parameter significantly influenced the abutment top displacement at the centroid of the superstructure, which is similar to the free expansion analysis results. Developed prediction model can be used for a preliminary design of integral abutment bridges.

The Construction Management Plan of Dong Myoung Service Area (동명휴게소 건설사업관리 수행계획)

  • In Chi-Sung;Kim Jeong-Won;Jung Soon-Gil;Park Gwon-su;Lee Sung-Gak;Do Sang-Yeek
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.40-47
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    • 2003
  • The main purpose of Construction Management(CM) is the improvement of efficiency and effectiveness of the project with construction methodologies systematically and technically. This pilot project Dong Myeong Service Area and Gas Station project among 5 projects designated and supervised by Ministry of Construction and transportation(MOCT), is to reduce cost, to maintain and control schedule, to keep proper quality, Claim and Risk through Partnering, Design Review, Constructability, Value Engineering and Project Management Information System(PMIS) and so on. Major factors of CM Plan are introduction of the phased and classified Construction Management Services from initiation of project to completion and adaptation of CM technologies and guide the implementation methodologies of the CM Pilot Project in CM construction market.

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Variability Support in Component-based Product Lines using Component Code Generation (컴포넌트 코드 생성을 통한 컴포넌트 기반 제품 라인에서의 가변성 지원)

  • Choi, Seung-Hoon
    • Journal of Internet Computing and Services
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    • v.6 no.4
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    • pp.21-35
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    • 2005
  • Software product-lines is the software development paradigm to attain the rapid development of quality applications by customizing the reconfigurable components and composing them based on predefined software architectures. Recently various methodologies for the component-based product lines are proposed, but these don't provide the specific implementation techniques of the components in terms of variability resolution mechanism. In other hand, the several approaches to implement the component supporting the variabilities resolution are developed, but these don't define the systematic analysis and design method considering the variabilities from the initial phase. This paper proposes the integration of PLUS, the one of product line methodologies extending UML modeling, and component code generation technique in order to increase the efficiency of producing the specific product in the software product lines. In this paper, the component has the hierarchical architecture consisting of the implementation elements, and each implementation elements are implemented as XSLT scripts. The codes of the components are generated from the feature selection. Using the microwave oven product lines as case study, the development process for the reconfigurable components supporting the automatic variability resolution is described.

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Establishment and Application of Nuclear Criticality Safety Validation Methodology (핵임계 안전성 검증 방법론 정립 및 적용)

  • Lee, Seo Jeong;Cha, Kyoon Ho
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.16 no.3
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    • pp.315-330
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    • 2018
  • A subcritical facility must ensure nuclear criticality safety under all circumstances. For this purpose, it is essential to have a procedure to validate that calculated values do not exceed upper subcritical limit (USL), determined by quantifying the bias and uncertainty. However, there are several validation methodologies of nuclear criticality safety and these can yield different USL. Therefore, it is necessary to analyze the validity of the methodologies to establish one methodology that can provide the most appropriate USL. In this study, two documents, a guide for validation of nuclear criticality safety calculational methodology (NUREG/CR-6698) and a criticality benchmark guide for light water reactor fuel in transport and storage package (NUREG/CR-6361), are compared and analyzed. In particular, the methodology in NUREG/CR-6361 is applied to the USLSTATS code. However, the analysis results show that the methodology in NUREG/CR-6698 is more appropriate, for several reasons. This is applied to decision of USL to design casks using SCALE code version 6.1.

A Methodology for u-Service Business Model Diagram and Analysis (u-서비스에 대한 비즈니스 모델 다이어그램 및 분석 방법론 개발)

  • Lee, Nam-Yeon;Kwon, Oh-Byung
    • The Journal of Society for e-Business Studies
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    • v.14 no.1
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    • pp.13-34
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    • 2009
  • As ubiquitous computing technology is proliferating, a wider range of u-services applying ubiquitous computing technology has been implemented and some of the u-services have been actively considered for commercialization. Accordingly, establishing corresponding business models based on u-services also have been increased. However, structured methodologies to build u-service business models are still in its very early age. Moreover, since most of the legacy business model formulation and analysis methodologies have stressed on conventional or digital services, not u-services. Hence, the purpose of this paper is to propose a structured methodology of formulating and analyzing business models for u-services. An illustrative example is described to show the feasibility of the proposed methodology. To do so, Business Model Diagram (BMD), which adopts model components for u-services, is newly developed.

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Investigation of Building Extraction Methodologies within the Framework of Sensory Data

  • Seo, Su-Young
    • Spatial Information Research
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    • v.16 no.4
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    • pp.479-488
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    • 2008
  • This paper performs investigation of the state-of-the-art approaches to building extraction in terms of their sensory input data and methodologies. For the last decades, there have been many types of sensory input data introduced into the mapping science and engineering field, which are considerably diverse in aspects of spatial resolution and data processing. With the cutting-edge technology in this field, accordingly, one of the key issues in GIS is to reconstruct three -dimensional virtual models of the real world to meet the requirements occurring in spatial applications such as urban design, disaster management, and civil works. Thus, this study investigates the strengths and weaknesses of previous approaches to automating building extraction with two categories - building detection and modeling and with sensor types categorized. The findings in this study can be utilized in enhancing automation algorithms and choosing suitable sensors, so that they can be optimized for a specific purpose.

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Design of Methodology Framework based on Meta-Model (메타모델 기반의 방법론 프레임워크 설계)

  • Cho, Eun-Sook
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.10
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    • pp.6969-6976
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    • 2015
  • As new technologies are advancing and development paradigms are changing, software development process and development methods are evolving progressively. As a result, because the number of developing and managing processes and methodologies are increasing as a project in companies, effective management methods are needed. Especially, because companies should apply optimized methodology according to project's size and characteristics, customization technique of methodology is required urgently. In this paper, we propose a meta-model based methodology framework which can integrate and manage methodologies being developed progressively. Applying proposed methodology framework, a company is able to manage as well as develop optimized methodology easily as a project. Especially, because a proposed methodology framework is developed by meta-model, adding or extending new methodology elements can be realized simply as well as method elements are reused easily in case of customization of methodology as a project.

Study on Decision-Making Model to Select Optimal Strengthening Method (최적 보강공법 선정을 위한 의사결정모델에 관한 연구)

  • Sun, Jong-Wan;Park, Kyong-Hoon;Oh, Hong-Sub;Cho, Hyo-Nam
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.14 no.1
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    • pp.117-124
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    • 2010
  • Different to other social infrastructures, bridge elements or bridges can be damaged or collapsed and this may cause death toll and severe social and economical damage, bridges should be managed to maintain a safety level. Diverse strengthening methods is developed to improve a deteriorated bridge performance up to original design level. But rational decision-making process and methodologies to select a optimum strengthening method are absence yet in Korea. This paper therefore derived items and proposed methodologies for quantity estimate considering uncertainty to select a optimum strengthening method among conceptually designed alternatives. And also, to demonstrate the applicability and verification of the proposed approach, it was applied to select the optimum strengthening method for the deteriorated T-shape concrete girder bridge. The model and the procedure can greatly contribute to the uncertainty-oriented alternative selection.