| Title: | A 3D nonlinear dynamic analysis of a rock-fill dam based on IZIIS software |
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| Authors: | ID Mircevska, Violeta (Author)
ID Bickovski, Vladimir (Author)
ID Garevski, Mihail (Author)
ID Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru (Copyright holder) |
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| Files: |  Acta_geotechnica_Slovenica_2007_Mircevska,_Bickovski,_Garevski_A_3D_nonlinear_dynamic_analysis_of_a_rock-fill_dam_based_on_IZIIS_softwar.pdf (923,69 KB)
MD5: 8F70410AF6C85B1BEBFE132913CA1969
PID: 20.500.12556/dkum/17248ce5-678f-40ea-961b-3e97f6ff9244
 http://fgserver3.fg.um.si/journal-ags/2007-2/clanek-2.asp
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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| Abstract: | This paper treats the 3D nonlinear dynamic behavior of a rock-fill dam based on the Mohr-Coulomb failure criterion. The dam is situated in a steep, narrow, “V-shaped” rigid canyon. The concept of a massless rock foundation is treated, for which a certain part of the rock is included in the model. The dam-rock interface was modeled by contact elements, which allowed certain relative displacements between the two media of different stiffnesses. The generation of the 3D mathematical model was related to the topology of the terrain, and the nonlinear dynamic response was based on the "step-by-step" linear-acceleration direct-integration method, making use of the Wilson-θ method. The convergence process was in accordance with the Newton-Raphson method. First, the initial static effective stresses existing in the conditions of the established stationary filtration through the clayey core were defined. The analysis was based on an original FE program for the static and dynamic analyses of rock-fill dams, as well as a FE program for the solution of the stationary filtration process through the clayey core. The dynamic response of the 3D model of the dam was defined for the effect of harmonic excitations. Dynamic analyses in the linear and nonlinear domains were performed for the purpose of comparing the results. The time histories of the linear and nonlinear responses were defined for selected sections and nodes of the model, the tension cut-off zones, the plastic deformations, and the stress-shear strain relationships. The coefficient against the sliding of the potential sliding surfaces was also defined. It can be concluded that 3D analyses as well as a nonlinear material treatment of the soils built in the dam are imperative for a proper assessment of the stability of rock-fill dams situated in narrow canyons. |
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| Keywords: | automatic generation of 3D model, rock-fill dam, nonlinear dynamic analysis, elastic perfectly plastic criterion, tension cutoff, cracking zones, plastic deformations, stability |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Year of publishing: | 2007 |
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| Number of pages: | str. 16-32 |
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| Numbering: | Letn. 4, št. 2 |
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| PID: | 20.500.12556/DKUM-70524  |
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| ISSN: | 1854-0171 |
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| UDC: | 624.131:55 |
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| ISSN on article: | 1854-0171 |
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| COBISS.SI-ID: | 246142208 |
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| NUK URN: | URN:SI:UM:DK:NCA6ZLBX |
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| Copyright: | Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo Univerze v Mariboru |
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| Publication date in DKUM: | 18.05.2018 |
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| Views: | 1591 |
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| Downloads: | 183 |
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| Metadata: |    |
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| Categories: | Misc.
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