System reliability analysis of concrete arch dams considering foundation rock wedges movement : a discussion on the limit equilibrium method

Soltani, Narjes (avtor), Escuder-Bueno, Ignacio (avtor), Klun, Mateja (avtor)

In this paper, a discussion on the applicability and limitations of the limit equilibrium method is presented. In this manner, the reliability of a concrete arch dam-foundation system under static loading is evaluated by considering a set of potentially moveable rock wedges in the foundation. The safety of the system is assessed utilizing a quasi-analytical method, which employs the limit equilibrium method and numerical analysis to calculate the sliding safety factors and the dam trust forces, respectively. The reliability is evaluated using the Latin Hypercube Sampling method. Random variables in the system are the friction angle, cohesion, and the Grout Curtain Efficiency Coefficient. In the end, the influence of two parametric variables of discontinuities, elastic slip and rock mass deformability modulus, on the rock wedges’ sliding safety factor is evaluated by comparing the results of the quasi-analytical method with the purely numerical method. The results show that in the case of complicated geotechnical conditions, the limit equilibrium method may not reflect real-world failure scenarios.

• Jezik: Angleški jezik
• Ključne besede: double-curvature concrete arch dams, reliability analysis, foundation stability, limit equilibrium method, numerical models, Latin Hypercube Sampling
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 17 str.
• Številčenje: Vol. 9, iss. 10, art. 176
• PID: 20.500.12556/RUL-163631
• UDK: 519.62
• ISSN pri članku: 2412-3811
• DOI: 10.3390/infrastructures9100176
• COBISS.SI-ID: 210858499
• Datum objave v RUL: 09.10.2024

Gradivo je del revije

• Naslov: Infrastructures
• Skrajšan naslov: Infrastructures
• Založnik: MDPI AG
• ISSN: 2412-3811
• COBISS.SI-ID: 526777369

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: ločna pregrada, betonska pregrada, zanesljivostna analiza, stabilnost temeljnih tal, mejna stanja, numerična analiza