Effect of Slab Shear Reinforcement on the Performance of the Shear Wall

Effect of Slab Shear Reinforcement on the Performance of the Shear Wall–Floor Slab Connection

Greeshma, S. / Jaya, K. P.

Abstract

The floor slabs and shear walls together act as a rigid jointed frame in resisting gravity loads and lateral forces caused by wind and earthquake. The junction between the wall and slab is a key force-resisting element that is subjected to severe stress concentration. The performance of the connection can influence the pattern and distribution of lateral forces among the vertical elements of the structure. In the current study, two different reinforcement detailing adopted, such as (1) conventional joint with the provision of U hooks connecting shear wall and slab and (2) slab bars bent 90° at the core region along with the provision of shear reinforcement in the slab. Analytical investigations were carried out to study the performance of the shear wall–slab connection with these detailings. The RC model consists of a material model to predict the failure of brittle materials, applied to a three-dimensional solid element in which reinforcing bars may be included. Good energy dissipation capacities were observed with the provision of shear reinforcement for an effective width of the slab compared with a conventional joint. The experimental results were compared with analytical results carried out using the finite-element software ANSYS, and it was found that the experimental results are in good agreement with the analytical result.