Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Large-Scale 3D Random Finite Element Analysis of Embankment Seepage Stability
The stability assessment of a soil embankment in the flooding season has attracted increasing attention in recent years. The current study performs a coupled hydraulic-mechanical analysis of an embankment subjected to water level fluctuation. The coefficient of permeability of embankment soils is represented by a uniform random field with upper and lower bounds. The random finite element method is incorporated for the solution of such coupled analysis. The results indicate that the horizontal correlation length of the permeability field has significant effects on the seepage patterns, leading to a greater variability in the total flow rate, since water flows more easily along the regions of higher permeability. In addition, the failure mechanism resulted from the coupled analysis shows that a rise of water level plays a predominant role in the instability of the embankment, compared with the generated irregular seepage force. The factor of safety of the embankment decreases with the increase of upstream water level, and the corresponding failure mode also changes significantly. The findings from this study can serve as a guidance for the design or reinforcement of a soil embankment and provide a new insight into the solution of green life cycle and sustainable development of embankment engineering.
Large-Scale 3D Random Finite Element Analysis of Embankment Seepage Stability
The stability assessment of a soil embankment in the flooding season has attracted increasing attention in recent years. The current study performs a coupled hydraulic-mechanical analysis of an embankment subjected to water level fluctuation. The coefficient of permeability of embankment soils is represented by a uniform random field with upper and lower bounds. The random finite element method is incorporated for the solution of such coupled analysis. The results indicate that the horizontal correlation length of the permeability field has significant effects on the seepage patterns, leading to a greater variability in the total flow rate, since water flows more easily along the regions of higher permeability. In addition, the failure mechanism resulted from the coupled analysis shows that a rise of water level plays a predominant role in the instability of the embankment, compared with the generated irregular seepage force. The factor of safety of the embankment decreases with the increase of upstream water level, and the corresponding failure mode also changes significantly. The findings from this study can serve as a guidance for the design or reinforcement of a soil embankment and provide a new insight into the solution of green life cycle and sustainable development of embankment engineering.
Large-Scale 3D Random Finite Element Analysis of Embankment Seepage Stability
Sustain. Civil Infrastruct.
Weng, Meng-Chia (Herausgeber:in) / Kawamura, Shima (Herausgeber:in) / Ding, Jianwen (Herausgeber:in) / Liu, Yong (Autor:in) / Wang, Man-Yu (Autor:in) / Pan, Yu-Tao (Autor:in) / Yao, Kai (Autor:in)
Civil Infrastructures Confronting Severe Weathers and Climate Changes Conference ; 2021 ; NanChang, China
11.07.2021
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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