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Shake-table testing of a stone masonry building aggregate: overview of blind prediction study
École Polytechnique Fédérale de Lausanne, Switzerland.
University of Pavia, Italy.
McGill University, Canada.
RWTH Aachen University, Germany.
Vise andre og tillknytning
2023 (engelsk)Inngår i: Bulletin of Earthquake Engineering, ISSN 1570-761X, E-ISSN 1573-1456Artikkel i tidsskrift (Fagfellevurdert) Epub ahead of print
Abstract [en]

City centres of Europe are often composed of unreinforced masonry structural aggregates, whose seismic response is challenging to predict. To advance the state of the art on the seismic response of these aggregates, the Adjacent Interacting Masonry Structures (AIMS) subproject from Horizon 2020 project Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe (SERA) provides shake-table test data of a two-unit, double-leaf stone masonry aggregate subjected to two horizontal components of dynamic excitation. A blind prediction was organized with participants from academia and industry to test modelling approaches and assumptions and to learn about the extent of uncertainty in modelling for such masonry aggregates. The participants were provided with the full set of material and geometrical data, construction details and original seismic input and asked to predict prior to the test the expected seismic response in terms of damage mechanisms, base-shear forces, and roof displacements. The modelling approaches used differ significantly in the level of detail and the modelling assumptions. This paper provides an overview of the adopted modelling approaches and their subsequent predictions. It further discusses the range of assumptions made when modelling masonry walls, floors and connections, and aims at discovering how the common solutions regarding modelling masonry in general, and masonry aggregates in particular, affect the results. The results are evaluated both in terms of damage mechanisms, base shear forces, displacements and interface openings in both directions, and then compared with the experimental results. The modelling approaches featuring Discrete Element Method (DEM) led to the best predictions in terms of displacements, while a submission using rigid block limit analysis led to the best prediction in terms of damage mechanisms. Large coefficients of variation of predicted displacements and general underestimation of displacements in comparison with experimental results, except for DEM models, highlight the need for further consensus building on suitable modelling assumptions for such masonry aggregates.

sted, utgiver, år, opplag, sider
2023.
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-64277DOI: 10.1007/s10518-022-01582-xOAI: oai:DiVA.org:ri-64277DiVA, id: diva2:1746015
Merknad

The project leading to this paper has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 730900.

Tilgjengelig fra: 2023-03-27 Laget: 2023-03-27 Sist oppdatert: 2024-05-27bibliografisk kontrollert

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