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Cracking Risk Analysis of Face Slabs in Concrete Face Rockfill Dams During the Operation Period by Yongtao Liu; Dongjian Zheng; Enhua Cao; Xin Wu; Zhouyan Chen is a Engineering article available to read on EtoBox.

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Due to changes in the environmental load and deformation of rockfill bodies, cracks likely form and develop in the face slab of concrete face rockfill dams (CFRDs), affecting the working behaviour of face slabs and the safe operation of dams. At present, the cracking risk in face slabs has not been studied. Based on field test data and the finite element method, this paper developed a new method of analysing the cracking risk of face slabs. Considering that the uncertainty of construction quality leads to the randomization of rockfill material parameters, the probability function and coefficient of variation in the parameters of rockfill materials were determined based on field test data, and then, parameter samples were obtained by Latin hypercube sampling (LHS). The stress of the face slab was calculated by the Duncan-Chang E-B model and Burgers model with the parameter samples. To reduce the calculation workload of the finite element method based on traditional Monte Carlo samples, LHS and the long-and short-term memory (LSTM) algorithm were applied to obtain the response surface function. The LSTM algorithm was used to train the mapping relationship between the material paramet

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Author

Yongtao Liu; Dongjian Zheng; Enhua Cao; Xin Wu; Zhouyan Chen

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)