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FORCED RESPONSE MEASUREMENTS ON A SEVEN STOREY TIMBER BUILDING IN SWEDEN
Linnaeus University, Sweden.
RISE Research Institutes of Sweden, Samhällsbyggnad, Bygg och fastighet. Linnaeus University, Sweden.ORCID-id: 0000-0001-8970-7114
RISE Research Institutes of Sweden, Samhällsbyggnad, Bygg och fastighet.ORCID-id: 0000-0001-5319-4855
2023 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Forced vibration tests have been conducted on the seven-storey timber building Eken in Mariestad in Sweden. The main objective is to estimate the building’s dynamic properties from test data. The eigenfrequencies, mode shapes and their scaling are useful to calibrate numerical models. However, the most important outcomes are the estimates of the modal damping values. The reason is that the damping impacts the acceleration, and thus the serviceability of the building, and at the same time, it is very hard to model damping. So, during the design phase, one must rely on previous test data (of which very few exist for taller timber buildings) or rule of thumbs. It is therefore important to gain knowledge about the damping for timber buildings in order to enable good designs of future and taller timber buildings. The test data shows that the modal damping is roughly equal to 2% of the critical viscous ones for the eigenmodes extracted. The test campaign on Eken is made as a part of the project Dyna-TTB in which vibrational tests have been performed on eight high-rise timber buildings, in Europe, of which Eken is one.

sted, utgiver, år, opplag, sider
2023.
Emneord [en]
Forced vibration, timber building, damping, eigenmodes, experimental modal analysis, Dyna-TTB
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-64166OAI: oai:DiVA.org:ri-64166DiVA, id: diva2:1741478
Konferanse
World Conference on Timber Engineering. 2023. Oslo, Norway.
Tilgjengelig fra: 2023-03-06 Laget: 2023-03-06 Sist oppdatert: 2023-06-26bibliografisk kontrollert

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