Abstract
A multi-scale numerical method for viscoelastic micro-cracked masonry is proposed. Firstly, the effective viscoelastic properties of the masonry are modelled by a periodic homogenization approach. The Modified Maxwell (MM) model is chosen for the creep. Secondly, an incremental procedure is proposed. Thirdly, an incremental formulation is used to get the overall viscoelastic behaviour of the two dimensional periodic cell. Finally, the result of the method is validated against analytical solution.
Highlights
In recent year, more and more high buildings are being constructed in developing countries such as Vietnam
Following the micro-macro approach, Anthoine [13] firstly used finite element method (FEM) applied on a REV to obtain the macroscopic properties of masonry
This study focuses on the micro-macro approach where an extension of FEM for the viscoelastic behaviour will be developed
Summary
More and more high buildings are being constructed in developing countries such as Vietnam These structures are explicitly required to withstand the movement induced by wind and earthquake. Microcracks appear lead to the loss of the load bearing capacity of masonry structure which can be accompanied by a facilitation of main structure collapse in dynamic loads (earthquake, blasting load, for example). This is especially important for high buildings, which consist of RC frame structure and masonry infill.
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