Abstract
With advances in technology approaches for capturing acceleration data for a modal test on civil engineering structures is changing rapidly. This paper presents a study carried out to examine the feasibility of using a number of independent acceleration recorders to capture the mode shapes of a tied arch highway bridge. The acceleration recorders used comprise a MEMS accelerometer mounted on a circuit board, where data from the accelerometer is read to a memory card on the circuit board. These devices are intended to measure acceleration however, to calculate mode shapes the individual recorders need to be synchronised. For conventional sensing system this is easily achieved as data from all sensors is being recorded by a central data logger. For individual recorders this is not the case, i.e. each recorder is logging the data directly to its own memory. Where a unique identifier (i.e. clapper board type event) can be implemented simultaneously at the start of all the recorder signals this will allow the signals be lined up in post processing. However, there is no guarantee that the signals won't drift from one another subsequently. While the potential loss in synchronisation is a problem, gathering the necessary acceleration data using independent recorders is vastly easier than using a wired system. This paper shows for the tied arch highway bridge used in the study the independent recorders provided a very good estimation of the bridge mode shapes.
Original language | English |
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Title of host publication | Proceedings of the 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII-9) |
Editors | Genda Chen, Sreenivas Alampalli |
Publisher | Missouri University of Science and Technology |
Pages | 596-601 |
Volume | 1 |
Publication status | Published - 04 Aug 2019 |
Event | 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2019 - St. Louis, United States Duration: 04 Aug 2019 → 07 Aug 2019 https://shmii-9.mst.edu/ |
Publication series
Name | International Conference on Structural Health Monitoring of Intelligent Infrastructure: Proceedings |
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Conference
Conference | 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure, SHMII 2019 |
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Abbreviated title | SHMII 2019 |
Country/Territory | United States |
City | St. Louis |
Period | 04/08/2019 → 07/08/2019 |
Internet address |
ASJC Scopus subject areas
- Artificial Intelligence
- Civil and Structural Engineering
- Building and Construction
Fingerprint
Dive into the research topics of 'Using approximately synchronised accelerometers to identify mode shapes: a case study'. Together they form a unique fingerprint.Student theses
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Development of a Minimal Information Data - modelling approach for the monitoring of short and medium span bridges
O'Higgins, C. (Author), McGetrick, P. (Supervisor), Robinson, D. (Supervisor) & Hester, D. (Supervisor), Jul 2022Student thesis: Doctoral Thesis › Doctor of Philosophy
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