期刊
MAGAZINE OF CONCRETE RESEARCH
卷 62, 期 7, 页码 489-496出版社
ICE PUBL
DOI: 10.1680/macr.2010.62.7.489
关键词
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资金
- Italian Department of University and Scientific Research (MIUR) [20077ESJAP_003]
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 subcritical 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 to be in good agreement with the experimental data obtained in the case of wedge splitting tests.
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