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Keywords = City-Hall Grenoble

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17 pages, 3040 KB  
Communication
Comparing Direct Observation of Torsion with Array-Derived Rotation in Civil Engineering Structures
by Philippe Guéguen, Frédéric Guattari, Coralie Aubert and Theo Laudat
Sensors 2021, 21(1), 142; https://doi.org/10.3390/s21010142 - 28 Dec 2020
Cited by 22 | Viewed by 4280
Abstract
In this article, we analyze the rotation rates in a building derived from a network of translation sensors and recorded by a rotation sensor. The building is Grenoble city hall, a reinforced concrete structure with permanent accelerometric translation sensors at the top and [...] Read more.
In this article, we analyze the rotation rates in a building derived from a network of translation sensors and recorded by a rotation sensor. The building is Grenoble city hall, a reinforced concrete structure with permanent accelerometric translation sensors at the top and bottom of the building. A temporary experiment was conducted, consisting in installing a BlueSeis-3A rotation sensor for more than 24 h at the top of the structure. The ambient vibrations were analyzed. The amplitudes of translation accelerations and rotation rates at the top and bottom of the building, along with their variations over time, were analyzed. The acceleration/rotation ratios were then compared with the impulse wave velocities derived from seismic interferometry by deconvolution between the top and bottom. Perspectives with regard to building imaging, time monitoring of structural integrity and understanding the contribution of rotations to the structure’s response are discussed, offering new suggestions for research projects. Full article
(This article belongs to the Special Issue Rotation Rate Sensors and Their Applications)
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