Title:
Tri-Directional Loading Tests on Reinforced Concrete Shear Walls
Author(s):
Yamada
Publication:
Web Session
Volume:
ws_S23_Yamada.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
4/2/2023
Abstract:
Loading tests were conducted to investigate the effect of tri-directional seismic force on the shear capacity of four reinforced concrete shear walls. The experimental parameters were the magnitude of out-of-plane deformation and axial load condition. All specimens reached the in-plane maximum load capacity at an interstory drift angle of approximately 0.50%. The ratio of the maximum average shear stress to the tensile strength of concrete decreased by 12.1 to 18.2% as differences between axial compressive and tensile forces increased. Because the concrete strengths differed specimen by specimen, their load capacities were compared by their safety margins, which were defined as the ratio of the maximum load capacity obtained experimentally to the one calculated by a design equation. The minimum safety margin was 1.07 attained for the specimen subjected to out-of-plane lateral load and varying axial load simultaneously, while that of the specimen subjected to only in-plane lateral load under constant axial load was 1.50. The test results revealed that out-of-plane deformation and tensile axial load reduced the in-plane shear capacity of the shear walls tested.