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System for concrete dam reliability with respect to foundation stability
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.ORCID iD: 0000-0002-8152-6092
2012 (English)In: Proceedings of the 3rd International Forum on Risk Analysis, Dam Safety Dam Security and Critical Infrastructure Management, 3IWRDD-FORUM, CRC Press, 2012, 87-92 p.Conference paper (Refereed)
Abstract [en]

In order to perform a complete risk analysis of a dam facility, it is necessary to have information about the probability and consequences of failure. To analyze the probability of failure of a concrete dam, all components and all failure modes must be accounted for. This paper presents a methodology for the calculation of the failure probability of a concrete dam with respect to foundation stability where the dam is considered as a system. The system is divided into different levels, where the top event on the "structure level" is failure of the dam. The next level is "monolith level", where each monolith can be considered as an element in a series system of the concrete dam. Below the monolith level is the "failure location level" which describes where the failure occurs, in the concrete-rock contact, in the rock mass or in the concrete. Since it is the weakest of these failure locations that will govern where the failure occurs, each failure location can be seen as elements in a series system. Beneath this level is the "failure mode level" where failure modes such as sliding and rotation also constitute elements in a series system. The "Basic failure modes" are the foundation level in the system. In some situations, the reliability of all failure modes as well as the correlation between failure modes is of importance for the overall reliability. In other situations only the reliability of a dominant failure mode is of importance. A discussion regarding this is given.

Place, publisher, year, edition, pages
CRC Press, 2012. 87-92 p.
Keyword [en]
Failure locations, Failure Probability, Foundation stability, IS failure, Probability of failure, Rock mass, Series system, Concrete dams, Critical infrastructures, Hydraulic structures, Information management, Monolithic integrated circuits, Public works, Reliability, System stability, Failure modes
National Category
Civil Engineering Geotechnical Engineering
URN: urn:nbn:se:kth:diva-98135ISI: 000300401800013ScopusID: 2-s2.0-84856735769ISBN: 978-0-415-62078-9OAI: diva2:535546
3rd International Week on Risk Analysis, Dam Safety, Dam Security, and Critical Infrastructure Management, 3IWRDD; Valencia; 17 October 2011 through 18 October 2011
QC 20120620Available from: 2012-06-20 Created: 2012-06-20 Last updated: 2012-06-20Bibliographically approved

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Johansson, Fredrik
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Soil and Rock Mechanics
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