Assessing the performance of CFRP strengthening on masonry walls using experimental modal analysis
Strengthening masonry structures using FRP laminates has been widely studied from a resistance point of view. However, there is a need of a non-destructive technique to validate strengthening interventions. In this paper, experimental modal analysis is proposed as a technique to assess practitioners...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/134171 |
| Acceso en línea: | https://hdl.handle.net/2117/134171 https://dx.doi.org/10.1016/j.engstruct.2019.05.036 |
| Access Level: | acceso abierto |
| Palabra clave: | Modal analysis Masonry Polymers Structural design Strength of materials experimental modal analysis masonry walls fibre reinforced polymers strengthening assessment analytical frequency calculation Anàlisi modal Ram de paleta Polímers Disseny d'estructures Resistència de materials Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures |
| Sumario: | Strengthening masonry structures using FRP laminates has been widely studied from a resistance point of view. However, there is a need of a non-destructive technique to validate strengthening interventions. In this paper, experimental modal analysis is proposed as a technique to assess practitioners’ works. Fifteen brick masonry walls were built and strengthened with five different patterns of carbon-FRP laminates. Experimental modal analysis was performed before and after strengthening interventions. Different vibration modes were compared to select the more sensitive one depending on the strengthening configuration. The change in the vibration frequency was analysed and correlated with cross-section stiffness modification. The obtained results showed changes up to 30% on the vibration frequencies due to strengthening installation. On the overall, the proposed experimental methodology is supported by theoretical analytical calculations with an error under 5% in most of the cases. |
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