Use of Dynamic Performances for Structural Health Monitoring of Concrete Structures

Schiller, Tianna (2018) Use of Dynamic Performances for Structural Health Monitoring of Concrete Structures. [USQ Project]


Civil infrastructure has been built using concrete for more than 100 yrs. During their operational lifetime significant damage can occur due to natural disasters, failures or overloading. Some of the damage within the structures are hidden and infrastructure can fail without any prior warning. There are many regular inspection programs in place. However, those measures are not sufficient to predict exact remaining lifetime after a large damaging event.

This report studies the damage condition using the static and dynamic structural response of two reinforced concrete beams under an operational situation at laboratory level. One of the beams was used as a control beam and the second beam had simulated corrosion damage. The change of; natural vibration frequency, amplitude of vibration, and damping will be used as indexes of health of the structure. The two beams were also tested for structural strength using mid-span deflection and compression.

Theoretical analysis was completed by hand calculations and finite element analysis. Results of this analysis was used to correlate the experimental data. In order to develop a successful structural health monitoring technique, the experimental and theoretical values should be well associated.

The experimental testing results and the theoretical results were successfully found. The correlation between these values is discussed throughout the report. The report concluded that through the experimental, finite element analysis and theoretical calculations the accelerometers were proven to be a useful tool for structural health monitoring. With further development and modelling could become a powerful tool in the civil engineering industry.

Recommendations to improve the project include the use of a better FBG sensor encasing technique to reduce chances of failure upon placing in-situ and the further development of a feasibility study into a structural health monitoring technique using accelerometers and FBG sensors.

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Item Type: USQ Project
Item Status: Live Archive
Additional Information: Bachelor of Engineering (Honours) (Civil)
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Supervisors: Epaarachchi, Jayantha
Date Deposited: 05 Sep 2022 05:42
Last Modified: 05 Sep 2022 05:42
Uncontrolled Keywords: concrete structures; damage; health monitoring

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