Long-term monitoring of a progressively deteriorating bridge to support safe operation
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Bibliographic Details
| Author(s): |
Darby Johannessen
(Australian Road Research Board (ARRB), Fortitude Valley, Queensland, Australia)
Tim Heldt (Australian Road Research Board (ARRB), Fortitude Valley, Queensland, Australia) Neal Lake (Australian Road Research Board (ARRB), Fortitude Valley, Queensland, Australia) Hanson Ngo (Australian Road Research Board (ARRB), Fortitude Valley, Queensland, Australia) Joshua Frew (Australian Road Research Board (ARRB), Fortitude Valley, Queensland, Australia) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Resilient technologies for sustainable infrastructure, Christchurch, New Zealand, 3-5 February 2021 | ||||
| Published in: | IABSE Congress Christchurch 2020 | ||||
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| Page(s): | 927-934 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/christchurch.2021.0927 | ||||
| Abstract: |
Gradual deterioration of concrete structures due to alkali-silica reaction (ASR) and other mechanisms is a worldwide issue which is especially concerning for bridges. Currently, the point at which such deterioration begins to significantly impact structural capacity is not clearly defined. In this study, long-term continuous strain monitoring instrumentation was installed on a deteriorating Queensland bridge in order to monitor structural performance and support ongoing management. Short-term conventional instrumentation was also installed, and a grillage model was developed in order to facilitate benchmarking and validation of the long-term system. This paper describes the rationale, selection of instrumentation and presents initial results. |
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| Keywords: |
alkali-silica reaction pre-stressed concrete Instrumentation long-term monitoring bridge asset management fiber Bragg grating risk assurance deck unit bridge Queensland
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