Simulation of Cracking in Large Arch Dam: Part II
Publication: Journal of Structural Engineering
Volume 115, Issue 7
Abstract
Part two of a complete fracture mechanics investigation of the cracking of the Kölnbrein Arch Dam is presented. Cracking which occurred in the heel region of the dam is investigated using computer simulation and fracture mechanics in an attempt to reproduce observed trajectory and load history before cracking. Four models for the cause of this cracking are described. All four models are shown to be viable mechanisms within the constraints of available cracking data. Each model is shown to possess the capacity to initiate observed cracking in the heel region, and to provide a zone of tensile principal stress with orientation consistent with observed trajectory. It is not possible to eliminate any model on the basis of crack direction of propagation. The necessity for combining simulation with accurate data of various types, and the insufficiency of two‐dimensional analysis are discussed.
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References
1.
Ingraffea, A. R. (1987). “Theory of crack initiation and propagation in rock.” Chapter 3, Rock Fracture Mechanics, B. Atkinson, ed., Academic Press, Inc.
2.
Ingraffea, A. R., and Gerstle, W. (1985). “Non‐linear fracture models for discrete crack propagation.” Application of Fracture Mechanics to Cementitious Composites, S. P. Shah, ed., Martinus‐Nijhoff Publishers, The Hague, The Netherlands, 171–209.
3.
Wawrzynek, P., and Ingraffea, A. R. (1987). “Interactive finite element analysis of fracture processes: An integrated approach.” Theoretical and Appl. Fracture Mech., 8, 137–150.
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Copyright © 1989 ASCE.
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Published online: Jul 1, 1989
Published in print: Jul 1989
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