Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Simulation of Hydraulic Fracture Failure in Concrete Gravity Dams Under Different Loads
This study investigated the problem of hydraulic fracture propagation in concrete gravity dams. A fracture mechanics model for concrete was constructed, and cohesive force units were used to simulate the propagation of fractures. Methods for calculating water pressure within the hydraulic fractures under static and dynamic conditions were established. The propagation process of fractures in gravity dams under the effects of hydrostatic pressure, seismic loads, and underwater explosion loads was simulated respectively. The results indicate that the hydraulic fracture calculation model for concrete gravity dams proposed in this paper has a good simulation effect on the distribution and propagation of fractures under the effects of hydrostatic pressure, seismic loads, and underwater explosion loads, which is close to the results of reference literature. Under the action of hydrostatic pressure, the propagation length of fractures in the gravity dam is positively correlated with the water head height; under the action of seismic loads, the water pressure inside the fractures significantly promotes the propagation length of the fractures; under the action of underwater explosion loads, the shock wave first causes extensive damage to the upstream dam face and then expands downward and concentrates in the middle and heel of the dam. The research results provide a basis for the stability analysis of hydraulic fractures in concrete gravity dams and have important reference values for fracture control and dam safety management in practical dam engineering.
Simulation of Hydraulic Fracture Failure in Concrete Gravity Dams Under Different Loads
This study investigated the problem of hydraulic fracture propagation in concrete gravity dams. A fracture mechanics model for concrete was constructed, and cohesive force units were used to simulate the propagation of fractures. Methods for calculating water pressure within the hydraulic fractures under static and dynamic conditions were established. The propagation process of fractures in gravity dams under the effects of hydrostatic pressure, seismic loads, and underwater explosion loads was simulated respectively. The results indicate that the hydraulic fracture calculation model for concrete gravity dams proposed in this paper has a good simulation effect on the distribution and propagation of fractures under the effects of hydrostatic pressure, seismic loads, and underwater explosion loads, which is close to the results of reference literature. Under the action of hydrostatic pressure, the propagation length of fractures in the gravity dam is positively correlated with the water head height; under the action of seismic loads, the water pressure inside the fractures significantly promotes the propagation length of the fractures; under the action of underwater explosion loads, the shock wave first causes extensive damage to the upstream dam face and then expands downward and concentrates in the middle and heel of the dam. The research results provide a basis for the stability analysis of hydraulic fractures in concrete gravity dams and have important reference values for fracture control and dam safety management in practical dam engineering.
Simulation of Hydraulic Fracture Failure in Concrete Gravity Dams Under Different Loads
WANG Yang (Autor:in) / SUN Jinshan (Autor:in) / WANG Gaohui (Autor:in) / ZHENG Jiawei (Autor:in) / LI Yongzhen (Autor:in)
2025
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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Fracture Mechanics of Concrete Gravity Dams
| Springer Verlag | 1989
Seismic fracture analysis of concrete gravity dams
| British Library Online Contents | 1995
Seismic fracture analysis of concrete gravity dams
| Online Contents | 1995
Mixed-Mode Hydraulic Fracture of Concrete Dams
| British Library Conference Proceedings | 2002
Fracture Initiation and Extension in Concrete Gravity Dams
| British Library Conference Proceedings | 1993