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Comparing Direct Observation of Torsion with Array-Derived Rotation in Civil Engineering Structures

Authors :
Philippe Guéguen
Frédéric Guattari
Coralie Aubert
Theo Laudat
Source :
Sensors, Vol 21, Iss 1, p 142 (2020)
Publication Year :
2020
Publisher :
MDPI AG, 2020.

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 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.

Details

Language :
English
ISSN :
14248220
Volume :
21
Issue :
1
Database :
Directory of Open Access Journals
Journal :
Sensors
Publication Type :
Academic Journal
Accession number :
edsdoj.190d5cbc1e1142ae8aa0f3af63e4f29f
Document Type :
article
Full Text :
https://doi.org/10.3390/s21010142