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Structural Assessment of a Concrete Dam Based on Uplift Pressure Monitoring

Bernstone, Christian LU ; Westberg, Marie LU and Jeppsson, Joakim LU (2009) In Journal of Geotechnical and Geoenvironmental Engineering 135(1). p.133-142
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Geotechnical and Geoenvironmental Engineering
volume
135
issue
1
pages
133 - 142
publisher
American Society of Civil Engineers (ASCE)
external identifiers
  • wos:000263111600011
  • scopus:57949110039
ISSN
1090-0241
DOI
10.1061/(ASCE)1090-0241(2009)135:1(133)
language
English
LU publication?
yes
id
504967aa-1b31-46fe-b907-bb2d0a05459a (old id 1311417)
date added to LUP
2009-03-17 10:55:40
date last changed
2017-11-19 03:42:09
@article{504967aa-1b31-46fe-b907-bb2d0a05459a,
  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.},
  author       = {Bernstone, Christian and Westberg, Marie and Jeppsson, Joakim},
  issn         = {1090-0241},
  language     = {eng},
  number       = {1},
  pages        = {133--142},
  publisher    = {American Society of Civil Engineers (ASCE)},
  series       = {Journal of Geotechnical and Geoenvironmental Engineering},
  title        = {Structural Assessment of a Concrete Dam Based on Uplift Pressure Monitoring},
  url          = {http://dx.doi.org/10.1061/(ASCE)1090-0241(2009)135:1(133)},
  volume       = {135},
  year         = {2009},
}