• Title/Summary/Keyword: 생애주기비용분석

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A Case Study of Life Cycle Cost Analysis on Pavements in Apartment Complex (단지내 도로포장별 생애주기 비용 분석(LCCA) 사례 연구)

  • Jung, Jong-Suk;Park, Yong-Boo;Sohn, Jeong-Rak
    • LHI Journal of Land, Housing, and Urban Affairs
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    • v.5 no.4
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    • pp.297-303
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    • 2014
  • Recently, block and permeable pavements have been placed in apartment complex. However. it is hard to decide the cycle of maintenance and repair due to lack of performance evaluation criteria for these pavements. This study carried out life cycle cost analysis(LCCA) to present resonable alternatives of the pavements by considering initial construction cost, maintenance and repair cost along with the cycle of repair. According to results of LCCA, the interlocking concrete block pavement is the best alternative when the repair cycle of 20years is assumed, while asphalt concrete pavement is the best alterative when the repair cycle of 10years is assumed. Therefore, the repair cycle is most important factor to select alternative. Also, it is necessary to develop resonable performance evaluation index to quantify the cycle of maintenance and repair in the future.

Life-cycle Cost Analysis of Using Rainwater Harvesting Systems in Hong Kong Residential Buildings (홍콩 주거건물에서 우수활용시스템의 생애주기비용분석)

  • Gao, Xing;Kim, Youngchul;Lee, Hyun Woo
    • Journal of the Korean housing association
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    • v.25 no.3
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    • pp.53-62
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    • 2014
  • This paper investigates whether the use of Rainwater Harvesting Systems (RWHSs) to provide water for washing machines in Hong Kong residential buildings would be financially attractive. In such systems, rainwater is accumulated and reused for doing laundry, garden irrigation, flushing toilets, and even drinking. Thus, the analysis of RWHSs' financial feasibility is essential for construction projects. RainCycle is used to validate financial feasibility, considering particular circumstances and data relevant to the Hong Kong context. A range of different scenarios by adjusting three factors are evaluated: catchment area, water demand, and discount rate. It is suggested that $2,000m^2$ would be a suitable catchment area in a typical Hong Kong residential building and it is demonstrated how water demand and discount rate influence the financial performance of RWHSs. In particular, the financial performance of RWHSs is sensitive to discount rates. The results suggest that the RWH system would be worthwhile for buildings with a lower number of floors, but would barely achieve financial validation in Hong Kong's super high-rise residential buildings.

A Study on Fatigue Characteristics and Economic Analysis of Discharged Nylon Fiber-Reinforced Asphalt Concrete (폐나일론을 이용한 섬유보강 아스팔트 콘크리트의 피로특성 및 경제성 분석)

  • Baek, Ingyu;Park, Kisun;Kim, Nakseok
    • Journal of the Society of Disaster Information
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    • v.9 no.4
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    • pp.476-483
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    • 2013
  • In this study, discharged nylon fibers were added to asphalt concretes to be compared with fatigue life and analyzed in economic point of view. A four point bending fatigue test was conducted, and as a result, nylon fiber reinforced asphalt concretes that showed a 10percent increase in fatigue life compared to ordinary asphalt concrete. The economic analysis confirmed that the maintenance cost was decreased by 540 million won throughout the analyzing period. It is thought discharged nylon fiber reinforced asphalt will cause more economic and social effects than was shown by life cycle cost analysis.

A study on product development methodology in reverse supply chain (역공급사슬 환경에서의 제품 개발 방법론에 대한 연구)

  • Kim, Jun;Na, Hong-Beom;Park, Jin-U
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2005.05a
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    • pp.393-399
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    • 2005
  • 환경에 대한 피해를 최소화하려는 노력은 종전의 소극적인 사후 대처에서 벗어나 환경 부하의 발생을 사전에 차단하기 위한 여러 가지 방법을 모색하는 방향으로 나아가고 있다. 환경친화적 설계를 구현하기 위한 분석과 평가의 도구로 전과정 평가와 제품 생애주기비용 분석 등이 사용되고 있으며, 공급사슬 상에서의 협력을 통해 환경 성과의 향상을 도모하는 공급사슬 환경관리가 기업의 실천 전략으로 대두되고 있다. 제품 개발 및 설계의 초기 단계에 환경 요인을 함께 고려하여 제품의 생산, 유통, 사용, 폐기의 전과정에서 발생하는 부정적 환경 영향을 최소화하는 동시에 기업의 제품 개발 역량을 제고할 수 있는 프레임워크를 제안한다.

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Life Cycle Cost Analysis at Design Stage of Cable Stayed Bridges based on the Performance Degradation Models (성능저하모델에 기초한 사장교의 설계단계 생애주기비용 분석)

  • Koo, Bon Sung;Han, Sang Hoon;Cho, Choong Yuen
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.33 no.5
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    • pp.2081-2091
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    • 2013
  • Recently, the demand on the practical application of life-cycle cost effectiveness for design and rehabilitation of civil infrastructure is rapidly growing unprecedently in civil engineering practice. Accordingly, in the 21st century, it is almost obvious that life-cycle cost together with value engineering will become a new paradigm for all engineering decision problems in practice. However, in spite of impressive progress in the researches on the LCC, the most researches have only focused on the Deterministic or Probabilistic LCC analysis approach and general bridge at design stage. Thus, the goal of this study is to develop a practical and realistic methodology for the Life-Cycle Cost LCC-effective optimum decision-making based on reliability analysis of bridges at design stage. The proposed updated methodology is based on the concept of Life Cycle Performance(LCP) which is expressed as the sum of present value of expected direct/indirect maintenance costs with expected optimal maintenance scenario. The updated LCC methodology proposed in this study is applied to the optimum design problem of an actual highway bridge with Cable Stayed Bridges. In conclusion, based on the application of the proposed methods to an actual example bridge, it is demonstrated that a updated methodology for performance-based LCC analysis proposed in this thesis, shown applicably in practice as a efficient, practical, process LCC analysis method at design stage.

Corrosion Fatigue Reliability-Based Life Cycle Cost Analysis of High-Speed Railway Steel Bridges (고속철도 강교량의 부식 피로신뢰성 기반 생애주기비용 분석)

  • Cho, Hyo-Nam;Jeon, Hong-Min;Sun, Jong-Wan;Youn, Man-Keun
    • Journal of the Korean Society for Railway
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    • v.11 no.1
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    • pp.107-113
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    • 2008
  • As it recently appears that LCC (Life Cycle Cost) analysis may be considered as an essential method for economic evaluation of infrastructures. Many researches have been made to assess LCC of each facility based on reasonable methods. However, expected maintenance repair cost must be reasonably estimated to enhance the reliability of LCC analysis through systematic and rational methods. This study is intended to propose a rational approach to reliability-based LCC analysis of high-speed railway steel bridges considering lifetime corrosion and fatigue damage. However in Korea, since high speed railway steel bridges are only recently constructed, no direct statistical data are available for the account of the maintenance cost and thus their maintenance characteristics are not clear yet. In this paper, for the assessment of expected maintenance/repair cost, the fatigue system reliability analysis incorporating the corrosion effect is proposed by considering the corrosion and fatigue damage using measured data of high speed railway steel bridges. A model proposed by Rahgozar, of at for fatigue notch factor considering the corrosion effect is used in order to incorporate the corrosion effect into the fatigue strength reduction and S-N curve. Finally, the effectiveness of LCC model proposed for high-speed railway steel bridges is demonstrated by a numerical example.

A Models of Economic Analysis in Safety Diagnosis for Remodeling Strategies of Apartment Housing (공동주택의 리모델링 전략을 위한 안전진단의 경제성분석 모델)

  • Seo Kwang-Jun;Choi Mi-Ra;Shin Nam-Soo
    • Korean Journal of Construction Engineering and Management
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    • v.6 no.4 s.26
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    • pp.164-171
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    • 2005
  • The importance of the life cycle cost analysis(LCCA) for apartment housing remodeling projects has been fully recognized over the last decade. Accordingly theoretical models, guidelines, and supporting software systems were developed for the life cycle cost analysis of apartment housing remodeling systems. However, the level of consensus on LCCA results is still low due to the lack of reliable data on remodeling activities for safety diagnosis. in order to predict the reliability based LCCA of the given case, suggested the remodeling strategies level after reviewing other related materials. Apply the real information of the economic index. And based on such analytical measures, remodeling and operation cost and LCC in remodeling strategies level have been predicted; suggests the basic information about remodeling interventions level for the apartment housing. The LCC analysis models and the fuzzy logic based safety assessment presented in this study can greatly contribute to the value-oriented design alternative selection, estimation of the economic analysis, and the allocation of budget for apartm.

Life Cycle Cost Analysis of Steel Railroad Bridges Under Corrosive Environment (강철도교의 부식영향에 따른 생애주기비용분석)

  • 이종수;유선미;조선규;김만철
    • Proceedings of the KSR Conference
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    • 2002.10a
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    • pp.684-689
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    • 2002
  • This paper represents the life-cycle cost(LCC) of steel bridges which are located on the train-network. Corrosion problems are mainly considered in the steel members such as steel plate girder, box girder, truss and arch. Based on the current value, initial construction cost, maintenance cost and demolition cost are calculated and life-cycle costs are formulated for the several types of bridges. From the comparison on each LCC, an effective painting method is recommended for reducing the LCC of steel bridges. Even though the initial cost of Super Weather Resistance Heavy Duty Paintings (Resin Fluoride) is expensive, because of the long endurance, the LCC of steel bridges painted with Super Weather Resistance Heavy Duty Paintings (Resin Fluoride) is less than that painted with General Heavy Duty (Rubber Chloride).

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A Study on the Life Cycle Cost Analysis of Railroad Bridges (철도교량의 생애주기비용분석에 관한 연구)

  • Park Mi-Yun;Na Ok-Pin;Hwang Young-Min;Kim Dae-Young;Cho Hyo-Nam
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.574-580
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    • 2005
  • Recently, the number of bridges and tunnels in railway is increasing due to the super high-speedy of train. Also, because of successively accidents of civil structures such as bridges and dams, the importance of maintenance become influential. The purpose of this study is to show the probabilistic life cycle cost analysis technique(PLCC) of the railroad bridge as pubic-infrastructures, and reasonably to indicate the economy in life cycle cost(LCC) through a case study. Rationally for life cycle cost analysis, the data gathered through many materials considered the uncertainty such as covariance. As a result, it is indicated that prestressed concrete bridge is pretty more cost-effective during life-cycle than preflex as well as steel box bridge. In future, if the construction of database and maintenance materials for railroad infrastructure is actualized, the life cycle cost analysis for railroad can be conducted easily and practically.

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Life Cycle Cost Analysis of Steel Bridges on Its Paint System during Safe Life Under (강교의 도장방식에 따른 안전수명간 생애주기비용분석)

  • Han, Sang-Chul;Kim, Eun-Kyum;Cho, Sun-Kyu
    • Journal of the Korean Society of Safety
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    • v.17 no.2
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    • pp.63-68
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    • 2002
  • Life Cycle Cost analysis technique is introduced to evaluate cost-effectiveness of two paint systems of steel bridges. The systems are a conventional paint system and a galvanized paint system. The all costs during safe lift such as initial cost repainting costs, disposal costs are considered for the lift cycle cost analysis. The NIST model is used and BridgeLCC 1.0 developed by the NST is utilized as the lift cycle cost analysis tool. It is concluded that, in spite of expensive initial cost, the durable paint system may be cost-effective compared with conventional paint system.