Numerical modeling and validation for 3D coupled-nonlinear thermo-hydro-mechanical problems in masonry dams

•We introduce a coupled thermo-hydro-mechanical model for masonry materials.•A series of 3D numerical simulations are carried out considering several scenarios.•Validation with measurements: temperature, displacement, stress and pore pressure.•Improvement of computational cost using parallel computa...

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Bibliographic Details
Published in:Computers & structures 2017-01, Vol.178, p.143-154
Main Authors: Nguyen-Tuan, Long, Könke, Carsten, Bettzieche, Volker, Lahmer, Tom
Format: Article
Language:English
Subjects:
Computer simulation
Conditioning
Conjugate Gradient Squared method
Coupled thermo-hydro-mechanical analysis
Dams
Iterative methods
Masonry
Masonry dam
Masonry materials
Mathematical models
Nonlinear equations
Numerical analysis
Parallel computation
Parallel processing
Pore water pressure
Studies
Three dimensional models
Unsaturated condition
Water infiltration
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Summary:•We introduce a coupled thermo-hydro-mechanical model for masonry materials.•A series of 3D numerical simulations are carried out considering several scenarios.•Validation with measurements: temperature, displacement, stress and pore pressure.•Improvement of computational cost using parallel computation. We introduce in this article a fully coupled thermo-hydro-mechanical (THM) model describing the physical phenomenon present in masonry materials. A series of 3D numerical simulations are carried out for the THM analysis of a dam during its impounding process. The results of the coupled THM analyzes are validated with measurements recorded during that process in terms of transient displacement, pore-water pressure and temperature values. An agreement between numerical simulations and measured data proves that the coupled THM model can well reproduce the multi-physical behavior of masonry dams. Furthermore, we introduce herein a solution for a large system of balance equations by combining parallel computation, storage in Compressed Sparse Row format, and iterative pre-conditioned Conjugate Gradient Squared method in order to improve the computational cost.
ISSN:0045-7949
1879-2243
DOI:10.1016/j.compstruc.2016.10.007