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Shear Strengthening and Short Column Effects of Reinforced Concrete Columns with Partial-Height Masonry Infills
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Shear Strengthening and Short Column Effects of Reinforced Concrete Columns with Partial-Height Masonry Infills
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Journal Article
Shear Strengthening and Short Column Effects of Reinforced Concrete Columns with Partial-Height Masonry Infills
2025
Overview
In this study, a shear strengthening method for lightly reinforced concrete columns with partial-height masonry infills was proposed. Perforated steel jackets were attached to one face or both faces of the column without removing the cover concrete and finishing mortar. The steel jackets were designed to provide additional shear resistance to the column through interlocking of the ribs at both ends. To investigate the seismic strengthening effects, six column specimens with partial masonry infills were tested under cyclic loading. The tests showed that the specimens with double-face jacketing exhibited an improved seismic performance, whereas there was little or no strengthening effect for the specimens with single-face jacketing. For further investigation on the short column effects due to partial-height infills, modeling parameters to define the stiffness and force-deformation relation of the column and masonry walls were proposed, and the modeling results were compared with the test results. Based on the investigation results, the detailing requirements of steel jacketing and the nonlinear modeling methods of the columns with partial masonry infills were discussed. Keywords: columns; masonry infill; nonlinear modeling; shear strengthening; short column effect; steel jacket.
Publisher
American Concrete Institute
Subject
