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Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/981F7D68-C077-4966-8023-C744F08B4AC6 | - |
| Identifier | https://doi.org/10.3390/geosciences13090272 | - |
| Identifier | https://www.mdpi.com/2076-3263/13/9/272 | - |
| Language | en | - |
| Extent | 14 pages | en |
| Title | Implementation of the displacement discontinuity method in geotechnical case studies | en |
| Creator | Xiroudakis Georgios | en |
| Creator | Ξηρουδακης Γεωργιος | el |
| Creator | Saratsis Georgios | en |
| Creator | Σαρατσης Γεωργιος | el |
| Creator | Lazos Ilias | en |
| Creator | Λαζος Ηλιας | el |
| Publisher | MDPI | en |
| Content Summary | This paper uses the displacement discontinuity method, one of the boundary element methods, to solve two major engineering problems. The first one addresses the safe design of underground excavations in fractured rock masses. The implemented method was used to control the slip of discontinuities passing through a circular opening at 45°. Special contact elements were used to simulate a possible slip on the cracks. At the same time, stress intensity factors (SIFs) were calculated using the gradient elasticity theory (special tip elements where numerical integrations are needed were excluded). The crack propagation due to shear slip occurrence was defined using the criterion of maximum tangential stress at an angle of 71° from the initial crack direction. The second one involved in the crack’s propagation was solved by applying pressure to the circular opening, while a part of it was transferred to the cracks, approximating the mechanism of hydraulic fracture. Finally, the implementation of higher elasticity elements in the cracks provided an accurate estimation of SIFs, showing an error of about 4%, as confirmed by comparisons with existing type I loading solutions. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2025-02-18 | - |
| Date of Publication | 2023 | - |
| Subject | Displacement discontinuity method | en |
| Subject | Geotechnical engineering | en |
| Subject | Hydraulic fracturing | en |
| Subject | Fracture mechanic | en |
| Subject | Stress intensity factor | en |
| Bibliographic Citation | G. Xiroudakis, G. Saratsis and I. Lazos, “Implementation of the displacement discontinuity method in geotechnical case studies,” Geosciences, vol. 13, no. 9, Sep. 2023, doi: 10.3390/geosciences13090272. | en |
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