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WORK PACKAGE 9: PRACTICAL BRIDGE MANAGEMENT - page 50 / 67

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SAMCO Final Report 2006 F09 Report on Bridge Management

The end-users (and their consultants, contractors etc.) have already used a number of different sensor and monitoring types as reported in Table 29.

The experiences are, however, still not sufficiently good. Two generals questions were therefore asked to the end-users in the questionnaires.

General question 1: How do you believe monitoring should be used in bridge man- agement now and in the future ?.

A number of replies and comments were received to this question. In general the repliy:

  • 1.

    Monitoring should only be used in special cases, on special structures or for special types of deteriorations and should not be used in general. This is partly due to the amount of data collected and partly due to the price of the monitoring.

  • 2.

    Monitoring should be incorporated in the general inspection and assessment of the structure and be combined with visual inspections and NDT- measurements. Monitoring should not replace the traditional inspection, but should be a supplement.

  • 3.

    Monitoring systems should be checked at regular intervals, in order to verify the performance of sensors, cables and datalogging facilities.

  • 4.

    Monitoring should contribute to the management of the structure, e.g. should provide information for the traffic regulations, required in case of strong winds, low visibility, snow or risk of ice on the road or structure.

  • 5.

    Monitoring should provide an early-warning of deterioration, enabling the proper actions to be planned and carried out at an optimal point in time.

  • 6.

    Monitoring should always contribute to the general knowledge of the materials and a structure’s performances in practice.

  • 7.

    Monitoring could be used for verifying design assumptions or design perform- ances in new structures, which extend beyond normal practice or experience.

  • 8.

    Monitoring could be used as a part of the quality control of repairs, joints, sealers etc.

  • 9.

    Monitoring could be used for extending the service life of structures, by pro- viding an immediate warning in case of structural safety problems.

www.samco.org

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