Structural Assessment of a Concrete Dam Based on Uplift Pressure Monitoring

Christian Bernstone, Marie Westberg, Joakim Jeppsson

Research output: Contribution to journalArticlepeer-review

18 Citations (SciVal)

Abstract

The context of structural monitoring of concrete dams as part of hydropower assets management is described. A tool that fits well into this context is the control of the uplift pressure of concrete dams. A monitoring technique suitable for this purpose was developed based on an automated water-level measurement technique using time-domain reflectometry and standard air-dielectric coaxial cable sensors. The signal is interpreted automatically by applying a threshold method to determine the apparent water level, which is then used to calculate the uplift pressure. A field test at a concrete dam column displayed consistent results, which were used as input to a reliability-based stability safety analysis. The results show that this technique can be very useful for uplift pressure monitoring. The information determined can serve as input to the maintenance work as well as assist engineering decisions.
Original languageEnglish
Pages (from-to)133-142
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume135
Issue number1
DOIs
Publication statusPublished - 2009

Subject classification (UKÄ)

  • Building Technologies

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