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- W4310514457 abstract "<ns3:p><ns3:italic>Background</ns3:italic></ns3:p><ns3:p> Textile-reinforced mortar (TRM) is an innovative strategy for the reduction of the seismic vulnerability of existing masonry buildings consisting in the application on the masonry surface, of a mortar coating with fiber-based grids or textiles embedded. The paper presents the calibration and application of a simplified modelling approach, based on multi-layered elements, for the simulation of existing masonry elements and structures strengthened through TRM.</ns3:p><ns3:p> <ns3:italic>Methods</ns3:italic></ns3:p><ns3:p> The strengthened masonry is modelled by using 20-nodes brick elements formed by a stacking sequence of layers representing the different material components (the masonry, the mortar coating and the embedded reinforcement). The nonlinear behavior of the materials is considered and calibrated on the basis of experimental characterization tests on individual components available in the literature. The simplified assumption of perfect bond among layers is considered.</ns3:p><ns3:p> <ns3:italic>Results</ns3:italic></ns3:p><ns3:p> Non-linear static analyses are performed on samples of increasing complexity: elementary panels, structural elements (piers and spandrels) and a pilot building. The results of some tests on TRM strengthened masonry, available in the literature, are considered to assess the model reliability in terms of capacity curves and collapse mode. The model is capable of detecting the typical failure mechanism of existing masonry, namely the diagonal cracking, the in-plane bending and the out-of-plane bending and is able to detect the activation also of mixed failure modes, that often occur in actual configurations.</ns3:p><ns3:p> <ns3:italic>Conclusions</ns3:italic></ns3:p><ns3:p> Given the coarse mesh size and the smear plasticization assumption, the model is not suitable for the rigorous reproduction of individual cracks but represents a good compromise between the goal to grasp the structural performances at the wide scale, including failure modes, and the analysis optimization.</ns3:p>" @default.
- W4310514457 created "2022-12-11" @default.
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- W4310514457 date "2022-11-30" @default.
- W4310514457 modified "2023-09-30" @default.
- W4310514457 title "Multi-layer modelling of masonry structures strengthened through textile-reinforced mortar" @default.
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- W4310514457 doi "https://doi.org/10.12688/openreseurope.15233.1" @default.
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