• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.380-387
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• 2009

In the past, many state Departments of Transportation (DOTs) in the U.S. managed their highway assets on a "worst first" basis and planned their highway projects in a tactical rather than strategic fashion. Due to increasingly tight highway budgets and recognition of long term benefits of asset management systems, the Federal Highway Administration (FHWA) has strongly pushed and encouraged state DOTs to implement asset management for managing their highway assets and highway projects. Currently, many DOTs have actively implemented and are in the process of applying this asset management concept for their highway infrastructure. However, different DOTs are developing different asset management systems because of their different organizational structures, data management structures, relationship with the legislature, and investment priorities. This study first identifies asset management indicators which are essential to successfully implementing asset management systems for State highway assets. The research team conducted a survey of asset management experts and reviewed the practices and policies of leading DOTs in asset management. Based on these indicators, this study develops an Asset Management Assessment Model (AM²) for different asset management systems. This model can be used by different DOTs to evaluate their current asset management systems and identify their strong areas and also their weak areas to improve in order to fully benefit from the advanced concept of asset management.

• 한국콘텐츠학회논문지
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• 제11권12호
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• pp.931-942
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• 2011

사회기반시설의 노후화로 유지보수 비용이 급격하게 증가하고 있는 선진국뿐만 아니라 국내에서도 시설물을 체계적으로 관리하여 안전사고를 예방하고 유지보수 예산을 절감해야 할 필요성이 날로 증대하고 있다. 뉴질랜드, 미국, 영국 등은 시설물의 공학적 상태와 성능에 따라 시설물을 유지보수하는 업무에 자산관리 개념을 도입하여 공공시설물을 관리하고 있다. 이들 나라들은 공공시설물 자산관리에 적용할 표준화된 자산관리 정보모델을 제시하고 시스템으로 개발하여 운용하고 있다. 국내에서도 공공시설물 자산관리 연구가 진행 중에 있으며, KTAM-40 자산관리 업무절차가 제시되었다. 본 논문에서는 공공시설물 중에서 도로자산관리시스템의 업무아키텍처 설계를 위하여 뉴질랜드 IIMM과 국내에서 개발된 KTAM-40 업무절차를 조사 분석하였다. 그리고 KTAM-40 업무절차를 참조하여 도로 자산관리시스템의 업무아키텍처를 설계하였다. 업무아키텍처는 첫째, 도로자산관리를 효율적으로 수행하기 위한 조직구조와 역할을 설정하고, 둘째로 도로자산관리 업무기능을 세분화하고, 셋째로 자산관리 업무기능들 간의 관계와 업무 기능들간 정보와 흐름을 정의하였다. 그리고 설계된 업무아키텍처가 유사한 업무 시스템의 다른 아키텍처와의 차별성을 검토하였다.

• 한국도로학회논문집
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• 제14권6호
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• pp.13-23
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• 2012

PURPOSES : This study is to improve the highway management and rehabilitation efficiently by method for asset management. METHODS : Based on the literature review, The concept of this paper is to investigate the use of asset values from a Bridge management system to improvement of maintenance system more efficiently. This study is suggested for an evaluation method based on the current bridge condition by Written-down replacement cost of the assets. RESULTS : We suggests the optimization methodology of road asset valuation for budge distribution and performance measure. CONCLUSIONS : We evaluate all of national highway's bridge by the optimization methodology of road asset valuation, and suggest application methods of asset result.

• 국제학술발표논문집
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• The 5th International Conference on Construction Engineering and Project Management
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• pp.576-582
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• 2013

Typical highway infrastructure systems include roadway pavement, drainage systems, tunneling, and other hardware components such as guardrails, traffic signs, and lighting. Tunnels in a highway system have provided significant advantages to overcoming various natural challenges including crossing underneath bodies of water or through mountainous areas. While only a few tunnel failure cases have been reported, the failure rate is likely to increase as these assets age and because agencies have not emphasized tunneling asset management. A tunnel system undergoes a deterioration life cycle pattern that is similar to other infrastructure systems. There are very few agencies in the United States implementing comprehensive tunnel asset management programs. While current tunnel asset management programs focus on inspection, maintenance, and operation safety, there is an increasing need for the development of a comprehensive life cycle tunnel asset management program. This paper describes a conceptual framework for a comprehensive tunnel asset management program. The framework consists of three basic phases including a strategic plan, a tactical plan, and an operational plan to provide better information to the decision makers. The strategic plan is a basic long term approach of tunnel asset management. The tactical plan determines specific objectives and the operational plan actually applies asset management objectives in practice. The information includes operational condition, structural condition, efficiency of the system, emergency response, and life cycle cost analysis for tunnel capital improvement project planning.

• 한국도로학회논문집
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• 제16권4호
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• pp.75-86
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• 2014

PURPOSES: The aim of this paper is developing user-oriented flexible Level Of Service (LOS) system for integrated asset management of various road facilities. It is essential to overcome limitations of general management systems which only focus on a type of assets (e.g. pavement, bridge etc.), and to serve a customizable LOS platform for smooth implementation and future improvement of the LOS considering various managerial environments of road agencies. METHODS: This study suggested a total framework of the LOS system as a process for self-development, operation and improvement of LOS system to conduct the PDCA (Plan-Do-Check-Act) in management process. In the process, we adopted user-customizable elements regarding asset definition, service index and evaluation method to match with the managerial environment of road agencies. In addition, we conducted an empirical study on the entire process of the suggested LOS system with a real road agency (Korea Express Highway) to prove applicability of the LOS system. RESULTS: From the empirical study, we confirmed that the suggested LOS system framework were suitable for development of customized LOS system. In addition, evaluation of asset conditions by LOS ratings, and quantification of vision achievement of the Korea Express Highway were successfully made. It would be the first trial in integrated management approach with LOS systems for numerous road facilities. CONCLUSIONS : It was recognized that easy application and sustainable improvement of the LOS was the most critical point in asset management. The suggested LOS system would be a powerful weapon as a managerial tool in preparing tight budget, aging infrastructures, and increased demands for more accountability both in Korea and internationally. Implementation of the LOS system needs to be expanded to the other infrastructure members to serve satisfactory level of service to taxpayers.

• 한국도로학회논문집
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• 제19권3호
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• pp.19-30
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• 2017

PURPOSES : This study proposes the road asset valuation approach using alternative depreciation methods. It has become necessary to have asset management system according to the adoption of accrual basis accounting for governmental financial reporting and the amendment of the road act. Therefore, it is very important to analyze the effect of depreciation methods on road asset value as a basic research for road asset management system. METHODS : The Ministry of Strategy and Finance (MOSF) has mainly performed road asset valuation based on Write down Replacement Cost and Straight Line depreciation method. This study suggests some appropriate asset valuation methods for road assets through case analysis using three depreciation methods: Consumption-based depreciation method, Condition-based depreciation method, and Straight Line depreciation method. A road asset valuation data of national highway route 1 (year 2014) is used to analyze the effect of three depreciation methods on the road asset value. Road assets include land and structures (pavement, bridge, and tunnel). This study mainly focuses on structures such as bridges and tunnels, because according to governmental accounting standards, land and road pavement assets do not depreciate. RESULTS : The main results of this study are as follows. Firstly, overall asset value of national highway route 1 was estimated at 6.97 trillion KRW when MOSF's method (straight-line depreciation method) is applied. Secondly, asset value was estimated at 4.85 trillion KRW on application of consumption-based depreciation method. Thirdly, asset value was estimated at 4.37 trillion KRW when condition-based depreciation method is applied. Therefore, either consumption-based or condition-based depreciation methods would be more appropriate than straight-line depreciation method if we can use the condition data of road assets including land that are available in real time. CONCLUSIONS : Since road assets such as pavements, bridges, and tunnels have various patterns of deterioration and condition monitoring period, it is necessary to consider a specific valuation method according to the condition of each road asset. Firstly, even though road pavements do not depreciate, asset valuation through condition-based depreciation method would be more appropriate when requirements for application of non-depreciation approach are not satisfied. Since bridge and tunnel facilities show various patterns of deterioration and condition monitoring period by type and condition level, consumption-based depreciation method based on deterioration model would be appropriate. Therefore, it is necessary to have a reasonable asset management system to apply condition-based depreciation method and a periodic condition investigation to manage road assets well.

• 한국콘텐츠학회논문지
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• 제11권12호
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• pp.919-930
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• 2011

도로는 사회간접자본 중 하나로서 지속적으로 관리되어야 그 기능을 발휘할 수 있는 국가의 중요한 자산이다. 지금까지는 도로를 포장관리시스템이라는 체계로 관리하여 왔다. 이 포장관리시스템은 시설물유지관리차원에서 사회기반시설을 관리하는 것으로서 주로 관리자 관점에서 공학적 판단을 기준으로 최소의 비용으로 공용수명을 최대화하는 모델이다. 그러나 경제발전으로 국민의 소득수준이 올라감에 따라 삶의 질에 대한 요구도 증가하고 있어 이제는 납세자로서 국민의 동의는 국가의 정책을 결정하는데 중요한 변수로 작용하기 시작했다. 따라서 사용자 관점의 평가는 이러한 요구를 해결하는 출발점이 되었다. 이런 관점으로 평가하기 위한 척도로서 서비스 수준(Level of Service: LoS) 이라는 것이 사용되기 시작했으며, 이를 시설물 자산관리에 활용하려는 여러 가지 시도가 있다. 본 논문에서는 LoS를 척도로 활용하는 한국형통합 자산관리체계(Korea Total Asset Management-40: KTAM-40)를 적용한 도로포장자산관리시스템의 정보기술아키텍처 중에 응용아키텍처와 데이터아키텍처를 설계하고 이것이 KTAM-40의 요구조건을 충족시키는지를 밝히고자 한다.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2003년도 학술대회지
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• pp.67-72
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• 2003

Infrastructure asset management is a methodology for programming infrastructure capital investments and adjusting infrastructure service provision to fulfil established performance, considering the life-cycle perspective of infrastructure. In this study, the methodologies for infrastructure asset management system implemented in sewer management system, bridge management system, pavement and highway management system, and embankment dam management system are described with focus on the system in U.S. As the major methodology to support the decision-making for asset mangers to better allocate the limited funds to the area needing it the most. various demand forecasting methodologies used in wastewater, water, transportation, electricity, and construction are also introduced for their applicability towards infrastructure asset management.

• 한국구조물진단유지관리공학회 논문집
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• 제15권4호
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• pp.146-154
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• 2011

최근 사회기반시설물에 대한 공공투자는 신규건설에 대한 지출이 감소하고 유지관리분야에 대한 지출이 점진적으로 늘어나는 추세로 변화되고 있다. 이에 따라 해외 도로시설물에 대한 유지관리분야에서도 선진 개념인 자산관리 방법론이 접목되고 있으며, 보다 근본적인 시스템 개선이 요구되고 있다. 따라서 본 연구에서는 중소규모 도로관리주체에서 사용할 수 있는 자산관리개념의 유지관리 프로그램을 개발하여 예산편성의 효율성을 높이고, 도로망 전체를 고려한 네트워크 방식의 합리적인 유지보수 방안을 제시하고자 한다. 또한, 향후 다수의 시설물을 통합적으로 관리할 수 있는 체계 및 방법론을 정립하였다.

• 대한토목학회논문집
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• 제30권6D호
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• pp.663-673
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• 2010

본 연구에서는 사회기반시설에 사전 대응적 방식의 자산관리 체계를 도입하기 위해 자산관리정보시스템을 개발하고 있다. 본 연구는 향후 자산관리정보시스템의 개발과 운영을 위한 방향을 모색하기 위한 목적으로, 자산관리정보시스템의 예상되는 성과를 평가하기 위한 사용자 만족도와 자산관리기능이 유지관리 업무에 미치는 영향정도를 분석하기 위해 연구 모형을 체계화하고 평가기준을 선정하였다. 선정된 평가기준에 따라 중요도를 산정하기 위해 AHP 분석 방법을 사용하였다. 중요도의 논리적 일관성을 검증하였으며 한쪽으로 편중된 이상치를 최소로 반영하기 위해 대용가능지수를 계산하였다.