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Failure Analysis for Geo-Hydrologic Design
Groundwater abstractions may lead to structural failure of buildings due to the settlement of the subsurface. In order to set the probability of failure to a predefined acceptable level, a probabilistic procedure is proposed in this article. The procedure provides intervention levels for groundwater heads at which the extraction of groundwater should be reduced. As part of the procedure a Levenberg-Marquardt method, extended by a subspace regularization technique, calibrates a finite element method based groundwater model that simulates flow under natural conditions or at moderate extraction rates. The method provides expected values for geo-hydrologic parameters like transmissivity and flow resistance and expresses the parameter uncertainty in a covariance matrix. A first order reliability method uses these values and calculates the failure probability conditioned for a series of intervention levels. This paper outlines the procedure and presents the results of a verification test. A pumping test near Utrecht in the Netherlands is used to simulate a field scale application. The application shows that the procedure reduces the risk of failure to an acceptable level.
Failure Analysis for Geo-Hydrologic Design
Groundwater abstractions may lead to structural failure of buildings due to the settlement of the subsurface. In order to set the probability of failure to a predefined acceptable level, a probabilistic procedure is proposed in this article. The procedure provides intervention levels for groundwater heads at which the extraction of groundwater should be reduced. As part of the procedure a Levenberg-Marquardt method, extended by a subspace regularization technique, calibrates a finite element method based groundwater model that simulates flow under natural conditions or at moderate extraction rates. The method provides expected values for geo-hydrologic parameters like transmissivity and flow resistance and expresses the parameter uncertainty in a covariance matrix. A first order reliability method uses these values and calculates the failure probability conditioned for a series of intervention levels. This paper outlines the procedure and presents the results of a verification test. A pumping test near Utrecht in the Netherlands is used to simulate a field scale application. The application shows that the procedure reduces the risk of failure to an acceptable level.
Failure Analysis for Geo-Hydrologic Design
Lecture Notes in Civil Engineering
Barla, Marco (editor) / Di Donna, Alice (editor) / Sterpi, Donatella (editor) / van Esch, John (author) / Sman, Bert (author) / van Meerten, Hans (author) / Brinkman, Rob (author)
International Conference of the International Association for Computer Methods and Advances in Geomechanics ; 2021 ; Turin, Italy
2021-01-15
9 pages
Article/Chapter (Book)
Electronic Resource
English
Failure Analysis for Geo-Hydrologic Design
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