Title:
Load Capacity of Slender High-Strength Concrete Walls with Side Supports
Author(s):
Jay G. Sanjayan and T. Maheswaran
Publication:
Structural Journal
Volume:
96
Issue:
4
Appears on pages(s):
571-576
Keywords:
buckling; high-strength concrete; reinforced concrete; walls
DOI:
10.14359/693
Date:
7/1/1999
Abstract:
Reinforced concrete walls simply supported along side edges and subjected to eccentric loading are tested and evaluated in this paper. The supports on the side edges force the walls to maintain zero deflection along the side edges. The paper reports test results of eight high-strength concrete walls of 2 m (6.56 ft) long, 1.5 m (4.92 ft) wide, and 50 mm (1.95 in.) thick. The test parameters investigated are reinforcement ratios of 0.85 and 1.69 percent, eccentricities of 25 and 8 mm (0.984 and 0.312 mm), and concrete compressive strengths varying from 50 to 96 MPa (7250 to 13,920 psi). Typical crack patterns of the specimens, failure modes, and load-deflection characteristics are reported. The failure modes are similar to the classical two-way buckling of plates, but the walls also exhibited a torsional failure mode near the corners. Comparison of the test results with estimations based on previous research work are also presented. The test results presented will be useful in calibrating and refining analytical models.