Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Amplitude Dependency Effects in the Structural Identification of Historic Masonry Buildings
Masonry buildings form a significant part of the central-European building stock. Despite significant efforts to standardize the seismic evaluation of such buildings, uncertainties pertaining to material properties and modeling assumptions introduce significant ambiguity. Operational modal analysis tools have been exploited to infer global structural stiffness properties, under the assumption of linear elastic behavior. However, measurements on real structures demonstrate nonlinear structural responses in the range of small strains, typically attributed to material cracking or to the soil. This work reports analysis of dynamic measurements on three real buildings at various amplitude levels, due to vibrations that are arbitrarily induced by construction works preceding planned demolition. The results show transient frequency drops that are attributed to increasing excitation amplitude, while the response remains in the commonly assumed linear elastic regime. This amplitude dependency remains poorly investigated, as vibrational data of higher amplitude for real masonry buildings are scarce. The evaluation of the impact of amplitude dependency on the, commonly assumed, linear elastic stiffness properties bears notable impact both in terms of model updating, as well as in terms of data-driven damage detection after disastrous events.
Amplitude Dependency Effects in the Structural Identification of Historic Masonry Buildings
Masonry buildings form a significant part of the central-European building stock. Despite significant efforts to standardize the seismic evaluation of such buildings, uncertainties pertaining to material properties and modeling assumptions introduce significant ambiguity. Operational modal analysis tools have been exploited to infer global structural stiffness properties, under the assumption of linear elastic behavior. However, measurements on real structures demonstrate nonlinear structural responses in the range of small strains, typically attributed to material cracking or to the soil. This work reports analysis of dynamic measurements on three real buildings at various amplitude levels, due to vibrations that are arbitrarily induced by construction works preceding planned demolition. The results show transient frequency drops that are attributed to increasing excitation amplitude, while the response remains in the commonly assumed linear elastic regime. This amplitude dependency remains poorly investigated, as vibrational data of higher amplitude for real masonry buildings are scarce. The evaluation of the impact of amplitude dependency on the, commonly assumed, linear elastic stiffness properties bears notable impact both in terms of model updating, as well as in terms of data-driven damage detection after disastrous events.
Amplitude Dependency Effects in the Structural Identification of Historic Masonry Buildings
Lecture Notes in Civil Engineering
Pellegrino, Carlo (Herausgeber:in) / Faleschini, Flora (Herausgeber:in) / Zanini, Mariano Angelo (Herausgeber:in) / Matos, José C. (Herausgeber:in) / Casas, Joan R. (Herausgeber:in) / Strauss, Alfred (Herausgeber:in) / Martakis, Panagiotis (Autor:in) / Reuland, Yves (Autor:in) / Chatzi, Eleni (Autor:in)
International Conference of the European Association on Quality Control of Bridges and Structures ; 2021 ; Padua, Italy
12.12.2021
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Structural health monitoring , Forced testing under demolition , Output-only modal identification , Amplitude dependent stiffness , Existing masonry buildings Engineering , Building Construction and Design , Engineering Economics, Organization, Logistics, Marketing , Risk Management , Fire Science, Hazard Control, Building Safety , Building Materials
Monitoring structural movements in historic stone masonry buildings
British Library Conference Proceedings | 1990
|Why Did These Historic Masonry Buildings Fail?
ASCE | 2022
|Mechanical Properties of Mortars for Structural Restoration of Historic Masonry Buildings
Springer Verlag | 2022
|HBIM for the structural assessment and repair of historic masonry buildings
DOAJ | 2024
|