engleski

Extracting performance indicators for arch bridge assessment

In this paper and following further research, key indicators to be monitored, for achieving efficient and effective performance of existing concrete arch bridge, through their design lifetime, will be revealed. Namely, on one hand, under the auspices of undergoing COST Actions TU 1406 (Quality specifications for roadway bridges, standardization at a European level) with a support of the COST Action TU 1402 (Quantifying the Value of Structural Health Monitoring), bridge performance aspects for achieving goals crucial for optimal bridge management are analysed. Categorisation process of operational based performance indicators is under progress, aiming further extension of operational database with the research- based one, particularly in the area of monitoring based performance indicators. On the other hand, research on development of assessment procedures for existing arch bridges is developing through several years in Croatia as a part of an extensive project to develop their appropriate maintenance strategy. To define a correct structural model of the existing structure and to perform adequate structural analysis, in order to properly assess the existing bridge, it is necessary to identify desired knowledge level of the existing structure based on the bridge importance. In order to get a valuable link between a certain indicator measurement (performance indicator) and corresponding property of structure (structural performance type or performance goal) of interest at the desired knowledge level, it is of a great importance to establish adequate data collection using appropriate monitoring methods for arch bridges. Therefore, this paper will show how the experience with Adriatic arch bridges serves as a base to extend the national project to the European level in order to prepare comprehensive guidelines for data collection to reach required knowledge level and to properly assess performance abilities of arch bridges in general.

Performance indicators, monitoring, arch bridges, structural performance type

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