Experimental validation of modified Barton's model for rock fractures
| Autor: | Simone Addotto, Marco C. A. Invernizzi, Pooyan Asadollahi, Fulvio Tonon |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Dilatant
Engineering Barton's empirical model business.industry Constitutive equation Dilatancy Stiffness Fracture mechanics Geology Geotechnical Engineering and Engineering Geology Compressive strength Shear (geology) Shear strength Rock mechanics medicine Geotechnical engineering Rock fracture constitutive model Direct shear test medicine.symptom business Shear stiffness Civil and Structural Engineering |
| Popis: | Among the constitutive models for rock fractures developed over the years, Barton’s empirical model has been widely used. Although Barton’s failure criterion predicts peak shear strength of rock fractures with acceptable precision, it has some limitations in estimating the peak shear displacement, post-peak shear strength, dilation, and surface degradation. The first author modified Barton’s original model in order to address these limitations. In this study, the modified Barton’s model (the peak shear displacement, the shear stress–displacement curve, and the dilation displacement) is validated by conducting a series of direct shear tests. |
| Databáze: | OpenAIRE |
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