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A platform for research: civil engineering, architecture and urbanism
Analysis of Interfacial Fracture between Concrete and Rock in Gravity Dam
The object of this paper is the analysis of the effects of crack sizes and orientations in a concrete dam resting on a rock foundation using the finite element method. The stress intensity factor at the crack tip is chosen as fracture criterion. The effects of hydrostatic and up lift pressures are highlighted. The obtained results show that the geometrical properties of the structures, the applied loading and the difference between the mechanical properties of concrete and rock lead to a mixed mode behaviour of the crack. The mode I stress intensity factor increases significantly when the crack length reaches 40% of the dam width. The mode II stress intensity factor becomes sensitive to the increase of the crack length when this one reaches 70% of the dam width. The hydrostatic pressure has an important effect on the SIF variation. However, the uplift pressure effect is more sensitive as the crack length increases.
Analysis of Interfacial Fracture between Concrete and Rock in Gravity Dam
The object of this paper is the analysis of the effects of crack sizes and orientations in a concrete dam resting on a rock foundation using the finite element method. The stress intensity factor at the crack tip is chosen as fracture criterion. The effects of hydrostatic and up lift pressures are highlighted. The obtained results show that the geometrical properties of the structures, the applied loading and the difference between the mechanical properties of concrete and rock lead to a mixed mode behaviour of the crack. The mode I stress intensity factor increases significantly when the crack length reaches 40% of the dam width. The mode II stress intensity factor becomes sensitive to the increase of the crack length when this one reaches 70% of the dam width. The hydrostatic pressure has an important effect on the SIF variation. However, the uplift pressure effect is more sensitive as the crack length increases.
Analysis of Interfacial Fracture between Concrete and Rock in Gravity Dam
Draï, Abdelkader (author) / Bouiadjra, B. B. (author)
Structures Congress 2008 ; 2008 ; Vancouver, British Columbia, Canada
Structures Congress 2008 ; 1-11
2008-10-14
Conference paper
Electronic Resource
English
Analysis of Interfacial Fracture between Concrete and Rock in Gravity Dam
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