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http://dx.doi.org/10.5000/EESK.2006.10.5.025

Strength of Reinforced Concrete Beam-Column Assembles Subjected to Seismic Loading  

Lee, Jung-Yoon (성균관대학교 건축공학과)
Chai, Hyee-Dai (성균관대학교 철근콘크리트공학연구실)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.10, no.5, 2006 , pp. 25-33 More about this Journal
Abstract
This paper provides a method to predict the ductile capacity of reinforced concrete beam-column joints that fail in shear after the plastic hinges occur at both ends of the adjacent beams. After the plastic hinges occur at both ends of the beams, the longitudinal axial strain at the center of the beam section in the plastic hinge region abruptly increases because the neutral axis continues to move upward toward the extreme compressive fiber and the residual strain of the longitudinal bars continues to increase with each cycle of inelastic loading. An increase in the axial strain of the beam section after flexural yielding widens the cracks in the beam-column joints, thus leading to an decrease of the shear strength of the beam-column joints. The proposed method takes into account shear strength deterioration in the beam-column joints. In order to verify the shear strength and the corresponding ductility of the proposed method, test results of 52 RC beam-column assembles were compared. Comparisons between the observed and calculated shear strengths and their corresponding ductilities of the tested assembles, showed reasonable agreement.
Keywords
beam-column assembles; strength reduction; effective compressive strength of concrete; concrete struts;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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