| Numéro |
J. Phys. IV France
Volume 136, November 2006
|
|
|---|---|---|
| Page(s) | 191 - 200 | |
| DOI | https://doi.org/10.1051/jp4:2006136020 | |
| Publié en ligne | 22 décembre 2006 | |
V. L'Hostis, F. Foct and D. Féron
J. Phys. IV France 136 (2006) 191-200
DOI: 10.1051/jp4:2006136020
Long-term monitoring strategy for concrete-based structures using nonlinear Kalman filtering
K.A. Snyder1, Z.Q. Lu1 and J. Philip21 National Institute of Standards and Technology, Gaithersburg, MD, USA
2 U.S. Nuclear Regulatory Commission, Rockville, MD, USA
(Published online 22 December 2006)
Abstract
Kalman filtering is introduced as a rational means for developing a
monitoring strategy for concrete structures.
The mathematics and utility of linear Kalman filters are presented briefly, and
the use of linear filters is demonstrated for Fickian diffusion.
The nonlinear extended Kalman filter is introduced and its utility in
estimating a transport parameter is demonstrated.
The concrete service life computer program 4SIGHT is introduced briefly and
combined with nonlinear filtering to refine the transport coefficient
from a laboratory diffusion experiment.
A fictitious monitoring strategy is presented that uses Kalman filtering
to both refine estimates and extend the time between monitoring intervals.
The advantages of using Kalman filtering, along with the remaining
technical difficulties, are discussed.
© EDP Sciences 2006