Seismic behavior of nonseismically detailed interior beam-wide column and beam-wall connections
Tran, Cao Thanh Ngoc
Date of Issue2009
School of Civil and Environmental Engineering
Six full-scale nonseismically detailed reinforced concrete (RC) interior beam-wide column and beam-wall joints with zero to high axial compression loads were tested to investigate the seismic behavior of the joints. Quasi-static cyclic loading, simulating earthquake actions, was applied. The overall performance of each test assembly was examined in terms of lateral load capacity, drift, stiffness, energy dissipation capacity, and nominal joint shear stress. Three levels of axial compressive column loads were investigated to determine how this variable would influence the performance of the joints. All the specimens failed adjacent to the joint panel with gradual strength deterioration and low attainment of structural stiffness. The low attainment of stiffness and strength was attributed to the slip of the longitudinal bars through the joint core. The test results showed that RC interior beam-wide column joints and beam-wall joints with nonseismic design and detailing attained a drift ratio of 2.0% without significant strength degradation. It was thus concluded that such joints could also possess inherent ductility for adequate response to unexpected moderate earthquakes.
ACI structural journal
© 2009 American Concrete Institute. This paper was published in ACI structural journal and is made available as an electronic reprint (preprint) with permission of American Concrete Institute. The paper can be found at the following official URL: [http://www.concrete.org/PUBS/JOURNALS/OLJDetails.asp?Home=SJ&ID=51663099]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.