We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A Method for Evaluating Systematic Risk in Dams with Random Field Theory.
- Authors
Ran, Congyong; Zhou, Zhengjun; Pei, Liang; Lu, Xiang; Gong, Binfeng; He, Kun
- Abstract
The parameters of gravity dams and foundation materials objectively exhibit spatial variability due to environmental and load influences, which significantly affect the safety status of dam structures. Therefore, a safety risk analysis method for a gravity dam–foundation system based on random field theory is proposed in this paper. Spatial variabilities in materials are particularly considered by using the finite element method. Then, composite response surface equations for the performance function (PF) of strength and stability failure are established, and then, the system failure risk is obtained using the Monte Carlo method. The proposed method solves the problem wherein the effect of spatial variability on failure risk cannot be reflected accurately by the performance function of multi-element sliding paths, and the difficulties in solving the failure risk of the series–parallel system due to multiple failure paths and their complex correlations. The application of a gravity dam shows that the developed method overcomes the disadvantages of the traditional method, such as the homogenization of the spatially random characteristics of parameters and the overestimation of failure risk in the system due to large variance estimation.
- Subjects
RANDOM fields; GRAVITY dams; MONTE Carlo method; ASYMPTOTIC homogenization; DAMS; FINITE element method; DAM failures; SYSTEM failures
- Publication
Applied Sciences (2076-3417), 2024, Vol 14, Issue 11, p4349
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app14114349