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原文传递 INSPECTION, MONITORING AND PRIORITY-RANKING OF BRIDGES.

题名：	INSPECTION, MONITORING AND PRIORITY-RANKING OF BRIDGES.
作者：	Larsen-ES; Holst-J
关键词：	Bridge-management-systems; Bridges-; Data-collection; Economics-; Inspection-; Monitoring-; Prioritization-; Rehabilitation-Maintenance; Strategic-planning
摘要：	During its service life a bridge must meet a certain quality standard decided by the owner and based on technical and economic parameters. Often it is very difficult to set up these standards and even more difficult to decide on the degree and extent to which bridges in a bridge stock should be repaired and rehabilitated. Safety is maintained by keeping the structures under observation by means of inspections and by requiring that the repair works be of a high quality. The inspections provide the basis for monitoring, evaluating and priority-ranking the works to be carried out. By introducing different types of bridge inspections and surveys together with the use of a suitable and appropriate Bridge Management System (BMS) for the collected data, the monitoring, evaluating and priority-ranking of a bridge stock have been made easier from both a technical and economical point of view. Based primarily on technical data but also experience, it is possible to predict the need for funds and budgets for bringing the bridges up to a given quality standard, determined by choosing the economic optimum strategy for repairs within the limited budgets. Following this policy in general, the quality standard after repair or rehabilitation will often vary from project to project due to technical factors not being fully taken into account when economic aspects are the decisive parameters. Because it is costly to achieve both technical and economic aims at the same time and as resources are normally limited, the works must be ranked according to a well-defined quality standard and policy. The overriding aim of bridge management is thus to achieve economic optimum solutions for repair, taking the economic interests of society as a whole into account. On the other hand, it is seen in many countries, that owners adopt a policy that all bridges must be brought up to a certain quality standard and condition within a given time based only on technical decisions and with limited budgets. Even with these limited budgets, this will not necessarily result in the optimum economic solutions for repair but will only ensure that the whole bridge stock has the same quality standard within a certain time. The present paper deals with the different ways of describing and administering rehabilitation strategies including the technical and economic consequences for the bridge stock. Data collection through inspections and surveys and data entry into a BMS for ranking of bridges for operation/maintenance and repair/rehabilitation are described. Furthermore, the different types of inspections are highlighted together with the degree of precision and detailed information these inspections can provide.
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