• Title/Summary/Keyword: Durability assesment

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Durability Assesment for Concrete Structures Exposed to Chloride Attack Using a Bayesian Approach (베이지안 기법을 이용한 염해 콘크리트 구조물의 내구성 평가)

  • Jung, Hyun-Jun;Zi, Goang-Seup
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2007.04a
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    • pp.589-594
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    • 2007
  • This paper is shown new method for durability assesment and design have been noticed to be very valuable has been successfully applied to predict concrete structures. This paper provides that a new approach for predicting the corrosion durability of reinforced concrete structures exposed to chloride attack. In this method, the prediction can be updated successive1y by the Bayesian theory when additional data are available. The stochastic properties of model parameters are explicitly taken into account into the model the probability of the durability limit is determined from the samples obtained from the Latin hypercube sampling technique. The new method may be very useful in designing important concrete structures and help to predict the remaining service life of existing concrete structures under chloride attack environments.

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Shape Design of an Outer Tie Rod, Considering Durability Criteria (내구 기준을 고려한 아우터 타이 로드의 형상 설계)

  • Kim, Jong-Kyu;Kwon, Young-Min;Park, Young-Chul;Lee, Kwon-Hee
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.8 no.4
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    • pp.54-60
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    • 2009
  • Weight reduction of automobile parts has been sought to achieve fuel efficiency and energy conservation. In this study, a shape design procedure is suggested to obtained the lightweight design of an outer tie rod. The developed aluminium Al6082M is selected as a steel-substitute material. Strength assesment and durability are the important design criterion in the structural design of an outer tie rod. This study considers strength and durability in the optimization process. In this study, the kriging interpolation method and trial and error method are adopted to obtain the minimum weight satisfying the strength and durability constraints.

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Performance Evaluation for Deteriorated Masonry in Military Facilities (조적조 노후 군시설의 성능 평가)

  • Yang Eun-Bum;Shin kyoung-Hee;Hwang Jong-Hyun;Kim In-Ho;Kim Yong-In;Park Tae-keun;Lee Chan Shik
    • Proceedings of the Korean Institute Of Construction Engineering and Management
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    • autumn
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    • pp.434-438
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    • 2001
  • Military facilities with masonry construction have a great portion in the whole military facilities. But lots of them have been used for more than 20 years, the degree of deterioration of the facilities are very serious. Futhermore, as small budget for the facilities maintenance and poor maintenance, the performance of the aged masonry facilities have continually decreased. We suggest a structural performance assesment criteria for the military facility through literature review, interview with experts and questionnaire. The assesment of structural performance includes the inclining and sinking degree of the facilities, durability of materials and resisting force of the structural members.

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