Analysis using modal information in SSI by dynamic observability method
| Autor: | Peng, Tian, Casas Rius, Joan Ramon, Turmo Coderque, José |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Doctorat en Enginyeria de la Construcció, Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations ISBN: 9780429279119 UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| DOI: | 10.1201/9780429279119-307 |
| Popis: | Structural Health Monitoring (SHM) has become a powerful tool to help decision making for management of structures along their service life. Estimation of parameters from dynamic response is more appealing than doing it from static response for abundant dynamic database. The aim of this paper is to propose a new dynamic Structural System Identification (SSI) methodology, using subsets of masses, natural frequencies and modal shapes to perform SSI combined with the observability method (OM) and the constrained observability method (COM), for its one-time calculation by solving just one objective function. New algorithms are introduced and one example using experimental data is used as a proof of concept to verify its feasibility. Last, a large structure is used to show the potential of the practical application of the proposed methodology. It turns out with this new methodology, unknown bending stiffness of the structure can be determined efficiently using modal information. |
| Databáze: | OpenAIRE |
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