Numerical Modeling of Tensile Crack Propagation in Concrete Dams

High-pressure hydraulic fracture (HF) is an important part of the safety assessment of high concrete dams. A stress-seepage-damage coupling model based on the finite element method is presented and first applied in HF in concrete dams. The coupling model has the following characteristics: (1) the strain softening behavior of fracture process zone in concrete is considered; (2) the mesh-dependent hardening technique is adopted so that the fracture energy dissipation is not affected by the finite element mesh size; (3) four coupling processes during hydraulic fracture are considered. By the damage model, the crack propagation processes of a 1 : 40 scaled model dam and Koyna dam are simulated. The results are in agreement with experimental and other numerical results, indicating that the damage model can effectively predict the carrying capacity and the crack trajectory of concrete gravity dams. Subsequently, the crack propagation processes of Koyna dam using three notches of different initial lengths are simulated by the damage model and the coupling model. And the influence of HF on the crack propagation path and carrying capacity is studied. The results reveal that HF has a significant influence on the global response of the dam.

Download Full-text

Impact of Foundation Nonlinearity on the Crack Propagation of High Concrete Dams

Soil Mechanics and Foundation Engineering ◽

10.1007/s11204-014-9257-9 ◽

2014 ◽

Vol 51 (2) ◽

pp. 72-82 ◽

Cited By ~ 5

Author(s):

M. A. Hariri-Ardebili

Keyword(s):

Crack Propagation ◽

Concrete Dams

Download Full-text

Numerical modeling of discrete crack propagation in reinforced and plain concrete

Fracture mechanics of concrete: Structural application and numerical calculation ◽

10.1007/978-94-009-6152-4_4 ◽

1985 ◽

pp. 171-225 ◽

Cited By ~ 31

Author(s):

A. R. Ingraffea ◽

V. Saouma

Keyword(s):

Numerical Modeling ◽

Crack Propagation ◽

Plain Concrete ◽

Discrete Crack

Download Full-text

Numerical modeling of wing crack propagation accounting for fracture contact mechanics

International Journal of Solids and Structures ◽

10.1016/j.ijsolstr.2020.08.017 ◽

2020 ◽

Vol 204-205 ◽

pp. 233-247

Author(s):

Hau Dang-Trung ◽

Eirik Keilegavlen ◽

Inga Berre

Keyword(s):

Numerical Modeling ◽

Crack Propagation ◽

Contact Mechanics ◽

Wing Crack

Download Full-text

NUMERICAL MODELING OF MORPHOLOGICAL CHANGES OF THE FRACTURE PROPAGATION IN THE QUENCHED GLASS PLATE

Modern Physics Letters B ◽

10.1142/s0217984994001291 ◽

1994 ◽

Vol 08 (21n22) ◽

pp. 1335-1341 ◽

Cited By ~ 4

Author(s):

Y.-H. TAGUCHI

Keyword(s):

Numerical Modeling ◽

Crack Propagation ◽

Morphological Changes ◽

Glass Plate ◽

Fracture Propagation ◽

Morphological Transitions ◽

Quenched Glass ◽

First Time

A model for crack propagation is proposed that reproduces, for the first time, the morphological transitions of cracks in the quenched glass plate recently observed by Yuse and Sano [Nature362, 329 (1993)].

Download Full-text