Title:
Confinement Effect in Reinforced Concrete Shear Wall with Enlarged Boundary Elements
Author(s):
Soumi Rajbanshi and Kaustubh Dasgupta
Publication:
Structural Journal
Volume:
122
Issue:
6
Appears on pages(s):
63-71
Keywords:
confinement; enlarged boundary element (EBE); experimental; Indian standard code; shear wall; slender; strain profile
DOI:
10.14359/51748926
Date:
9/1/2025
Abstract:
Slender reinforced concrete (RC) shear walls have become an integral part of lateral load-resisting mechanisms of modern high-rise structures, especially in earthquake-prone regions. Because the seismic behavior of the wall is governed by its design and detailing, several past studies are available regarding the same. However, limited studies have been carried out regarding the influence of the confinement effect in the web and the boundary elements on the wall behavior. To address this concern, an experimental study of an isolated slender shear wall with an enlarged boundary element (BE) designed in conformance to IS 13920:2016 was undertaken. The specimen was subjected to lateral slow cyclic displacement-
controlled loading. The relation between the global and local responses of the wall by means of strain profiles is documented in the present study. The evolution of the strain profiles obtained clearly depict the participation of the transverse reinforcement, indicating the mobilization of the confinement effect.
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