Cyclic Testing of Reinforced Concrete Structural Walls With Ordinary Boundary Element Detailing

Abstract eng:
The use of reinforced concrete walls to resist lateral demands from earthquakes is common. Two large-scale reinforced concrete walls were tested under a constant axial gravity load of 0.053Agf’c with reversed-cyclic, quasi-static lateral loading and overturning moment applied at the top of the wall. The walls had rectangular cross-sections, with differing amounts of boundary longitudinal reinforcement, and without ACI 318-11 Special Boundary Elements. The primary objective of the study was to ascertain the deformation capacity (plastic hinge rotation capacity) of walls with modest-to-light detailing. Damage initiated with spalling of cover concrete and buckling of wall longitudinal reinforcement, followed by eventual fracture of wall longitudinal reinforcement and crushing of the concrete core. Minimal strength degradation was evident in both specimens tested through loading cycles that produced 1.0% plastic hinge rotations. Significant strength degradation and damage occurred during loading cycles to 1.5% plastic hinge rotation. Failure occurred during the third loading cycle at

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