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Nonlinear interface crack propagation in concrete gravity dams under seismic loading

Paggi, Marco and Ferro, Giuseppe Nonlinear interface crack propagation in concrete gravity dams under seismic loading. In: 18th European Conference on Fracture (ECF18), August 30 - September 03, 2010, Dresden, Germany pp. 1-8. (Unpublished) (2010)

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Abstract

In this paper, the phenomenon of interface crack propagation in concrete gravity dams under seismic loading is addressed. This problem is particularly important from the engineering point of view. In fact, besides Mixed-Mode crack growth in concrete, dam failure is often the result of crack propagation along the rock-concrete interface at the dam foundation. To analyze such a problem, the generalized interface constitutive law recently proposed by the first author is used to proper modelling the phenomenon of crack closing and reopening at the interface. A damage variable is also introduced in the cohesive zone formulation in order to predict crack propagation under repeated loadings. Numerical examples will show the capabilities of the proposed approach applied to concrete gravity dams.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Interface crack propagation, nonlinear fracture mechanics, concrete dams, seismic loading
Subjects: T Technology > TJ Mechanical engineering and machinery
Research Area: Computer Science and Applications
Depositing User: Prof Marco Paggi
Date Deposited: 20 Dec 2013 10:17
Last Modified: 09 Oct 2014 09:20
URI: http://eprints.imtlucca.it/id/eprint/2081

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