The safety of cracked concrete dams is fundamentally affected by the mechanical behaviour of the material under cyclic loading conditions. In this case the crack can grow at a lower load level compared to the monotonic case. This phenomenon is called sub-critical crack propagation and depends on the mechanical behaviour of the fracture process zone. To assess this phenomenon, a number of experimental tests where the loading process is based on a first monotonic step (stopped before reaching the peak load) followed by a series of cyclic loading phases until collapse are examined. The results of numerical analyses appear in good agreement with the experimental data obtained in the case of wedge splitting tests.
|Titolo:||Subcritical crack propagation under cyclic load of concrete structures|
|Data di pubblicazione:||2010|
|Digital Object Identifier (DOI):||10.1680/macr.2010.62.7.489|
|Appare nelle tipologie:||1.1 Articolo in rivista|