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原文传递 INTEGRATING PREVENTIVE MAINTENANCE MANAGEMENT INTO BMS.

题名：	INTEGRATING PREVENTIVE MAINTENANCE MANAGEMENT INTO BMS.
作者：	Purvis-RL
关键词：	Bridge-management-systems; Cost-effectiveness; Decision-making; Implementation-; Inspection-; Preventive-maintenance; Strategic-planning
摘要：	Until recently maintenance has been virtually ignored in the evolution of bridge management system (BMS) technology. Preventive maintenance (PM) was considered a luxury by all but a few transportation agencies. The consequences of this neglect expanded exponentially with the aging bridge inventory, increased traffic, and use of deicing salts. Consequently, owners now recognize the need to protect the tremendous investment in highway structures. The Intermodal Surface Transportation Efficiency Act (ISTEA) and the Transportation Equity Act for the 21st Century (TEA-21) have made more money available to use for this purpose. Recognizing the importance of PM is only part of the solution to the problem. A potentially significant step is to devise an expert system to determine what to do and when to do it. What is the most cost effective PM strategy for a given situation? What factors influence that strategy? How important is each factor or how sensitive are the factors to various increments of change? Are the current methods of condition assessment adequate to trigger the most cost-effective strategy? Traditionally, agencies rely on the expertise of experienced individuals to make system and project level decisions regarding PM strategy. The lack of a scientific approach to this management process and inadequate record keeping have made it impossible to evaluate the effectiveness of one strategy versus another in a given situation. This also makes it difficult to build a historical database for refinement of future management decisions. Biannual inspections currently serve as the primary trigger for initiation of preventive actions. These inspections are usually limited to a subjective visual assessment. Subtle or subsurface problems are not identified. Often the quantified condition data needed for choosing between several remedial alternatives are not collected as part of this inspection. The cost of repairing the nationwide bridge inventory deficiencies has been estimated at 100 billion dollars. The implementation of a systematic methodology to identify the most cost-effective strategy for protecting these structures from future deterioration represents an enormous opportunity for savings. Such a methodology can be initiated as part of the implementation or expansion of a BMS. The Strategic Highway Research Program (SHRP) project C-104 looked at many of the factors associated with systematic PM strategies. This project developed a decision making procedure related to cost-effective protection and repair of corrosion damaged concrete bridge members. Topics included rates of deterioration, changes in rates of deterioration resulting from the addition of a protective system, available pr
总页数：	Conference Title: Eighth International Bridge Management Conference. Location: Denver, Colorado. Sponsored by: Transportation Research Board Committee on Bridge Maintenance and Management (A3C06). Held: 19990426-19990428. Transportation Research Circular
报告类型：	科技报告