Seismic Performance of Reinforced Concrete Intermediate Short Columns Failed in Shear

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Title: Seismic Performance of Reinforced Concrete Intermediate Short Columns Failed in Shear

Author(s): Yi-An Li, Pu-Wen Weng, and Shyh-Jiann Hwang

Publication: Structural Journal

Volume: 116

Issue: 3

Appears on pages(s): 195-206

Keywords: force-transfer mechanism; intermediate short columns; load-displacement curve; shear deformation; shear failure

Date: 5/1/2019

Abstract:
According to the previous earthquake reconnaissance, existing reinforced concrete buildings with intermediate short columns are vulnerable to shear failure. Thus, a simulation of the behavior of intermediate short columns has a significant influence on the seismic evaluation. This paper tests eight intermediate short columns in shear failure cases with different combinations of structural parameters, such as height-to-depth ratio, transverse reinforcement ratio, and axial load ratio. According to the test results, this paper proposes a lateral load-displacement curve for the intermediate short column failed in shear with a height-to-depth ratio of between 2 and 4. In addition to comparing the proposed curve with the test data in this paper, data from other literature are also used for verification. Test verification indicates that the proposed curve possesses a reasonable prediction, which is helpful for seismic evaluation of existing buildings.