Optimal decisions based on monitoring – case study of steel roof
- Monitoring of structures and related decisions based on cost optimization are discussed in this contribution. Many research publications and experimental data are currently available on inspection and on monitoring and they represent the outcome of the remarkable work done. Not all the topics of interest are widely debated and implemented in standards. The current state-of-practice in standards is summarized and aspects to be included in future recommendations are proposed. The implementation of risk-based decisions is illustrated in a case study dealing with a stadium roof in Northern Italy. Snow actions are important especially in northern and mountainous regions where heavy snowfalls and related accumulation result to considerable loads. As the roof structure fails to comply with the requirements of Eurocodes, a permanent monitoring system has been installed to allow for real time evaluation of the reliability level of the structure. The system supplies the necessary information supporting immediate decisions on closure of the stadium in case of an extraordinary snow load. Cost-optimal decisions regarding the closure of the stadium are analysed based on a limit state function, on probabilistic models for the influencing parameters including measurement uncertainty, economic losses related to closure and failure consequences. The results demonstrate the potential of the use of the monitoring systems and probabilistic reliability analysis in order to support decisions and highlight the need for their implementation in future standards.
Author: | Dimitris DiamantidisORCiDGND, Daniele Lenzi, Miroslav SýkoraORCiDGND |
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DOI: | https://doi.org/10.5592/CO/BSHM2017.4.7 |
Parent Title (English): | Proceedings of the Joint COST TU1402-TU1406 - IABSE WC1 Workshop, Zagreb 2-3 March 2017 |
Document Type: | conference proceeding (article) |
Language: | English |
Year of first Publication: | 2017 |
Release Date: | 2022/06/09 |
Tag: | SHM; monitoring; probabilistic methods; reliability analysis; reliability level; risk analysis; snow load |
First Page: | 4.7-1 |
Last Page: | 4.7-7 |
Institutes: | Fakultät Bauingenieurwesen |
Begutachtungsstatus: | peer-reviewed |
research focus: | Energie und Mobilität |
Licence (German): | Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG |