Fracture mechanics as applied to plain and reinforced concrete with particular reference to scaling of experimental data
Bosco, Crescentino ; Carpinteri, Alberto
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni, Tome 1 (1990), p. 351-366 / Harvested from Biblioteca Digitale Italiana di Matematica

Whereas in elasticity and plasticity geometrically similar structures behave in the same way, when strain-softening and strain-localization are taken into account the structural behaviour ranges from ductile to brittle merely by increasing size and keeping material properties and geometrical shape unchanged. The size-scale of plain and reinforced concrete elements has often revealed a fundamental influence on the global structural behaviour. This has been theoretically predicted and experimentally confirmed by the results obtained so far. As a consequence this is likely to influence several aspects concerning the design of large structures. The paper emphasizes how the size effects are also present in R.C. elements with a low content of steel and outlines the implications on the minimum steel percentage for these structures.

Mentre nel campo elastico e in quello plastico le strutture geometricamente simili hanno lo stesso comportamento, quando si considerano il ramo discendente della curva sforzi-deformazioni e la localizzazione delle deformazioni, il comportamento strutturale passa da duttile a fragile semplicemente modificando le dimensioni e lasciando inalterata la forma geometrica. Si riscontra quindi come l'effetto scala abbia una importanza fondamentale sul comportamento strutturale globale delle strutture di calcestruzzo semplice ed armato. Tale fenomeno, previsto teoricamente è confermato dai risultati sperimentali finora ottenuti dagli autori e può influenzare diversi aspetti riguardanti il progetto delle strutture. Il presente lavoro mette in evidenza come l'effetto scala sia presente anche nelle travi di calcestruzzo armato aventi basso contenuto di acciaio e ne delinea le implicazioni sulla percentuale minima di armatura per tali strutture.

Publié le : 1990-12-01
@article{RLIN_1990_9_1_4_351_0,
     author = {Crescentino Bosco and Alberto Carpinteri},
     title = {Fracture mechanics as applied to plain and reinforced concrete with particular reference to scaling of experimental data},
     journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni},
     volume = {1},
     year = {1990},
     pages = {351-366},
     language = {en},
     url = {http://dml.mathdoc.fr/item/RLIN_1990_9_1_4_351_0}
}
Bosco, Crescentino; Carpinteri, Alberto. Fracture mechanics as applied to plain and reinforced concrete with particular reference to scaling of experimental data. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni, Tome 1 (1990) pp. 351-366. http://gdmltest.u-ga.fr/item/RLIN_1990_9_1_4_351_0/

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