Reinforced Masonry Column’s Analysis: The Influence of Rounded Corners

Abstract

Numerical analysis of masonry structures is a complex task requiring deep knowledges about the problematics. This paper deals with concentrically compressed brick masonry column reinforced by fiber reinforced polymer (FRP) wrapping. The experimental research across the world has proved that FRP external sheets are an efficient tool for stabilization or strengthening of masonry structures. A combination of several types of column’s failure were observed during the experimental testing – failure in masonry, rupture of FRP sheet or failure at interface between reinforcement and masonry support. The rupture of sheet occurs close to sharp corners under the assumption of sheets’ perfect overlap. The rounded corners result in an enlargement of the FRP-masonry contact and reduction of the stress concentration. The increasing of an effective area causes a greater influence of FRP wrapping. For all 3D simulations the commercial software package ABAQUS was used and the obtained results are discussed.

RC-Columns Subjected to Lateral Cyclic Force with Different FRCM-Strengthening Schemes: Experimental and Numerical Investigation

“…This strategy is instead to the approach commonly used in the literature, i.e., the macro-model (Ombres and Verre 2019; Micelli and Cascardi 2020), which does not allow the individual constituents to be distinguished, such as in the case of masonry, where it is not possible to distinguish the individual clay brick and the vertical or horizontal mortar joints. This modeling technique is present in some works in the technical literature for both reinforced concrete structures (Chen et al 2015;Ombres and Verre 2021) and for masonry structures (Maroušková 2016(Maroušková , 2017Murgo and Mazzotti 2019;Ameli et al 2022) or historic masonry (Roca et al 2010;Valente and Milani 2016;Castellazzi et al 2018). As a drawback point is the increased computational burden.…”