Large Scale Testing of Low Aspect Ratio Reinforced Concrete Walls
Rocks, Joshua F.
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Recent studies have shown that predictive equations used in North America to calculate the peak shear strength of low aspect ratio walls are biased and that the scatter in the ratios of measured to predicted strength is great. Researchers at the University at Buffalo were funded by the United States National Science Foundation to investigate the seismic performance of large size reinforced concrete shear walls and improve the profession's understanding of the response of such walls. This thesis documents the analysis and construction of seven large size reinforced concrete shear walls. Five predictive equations and VecTor2 were used to design the test specimens and the test fixture. Four of the seven constructed specimens were tested by the time of this writing. The four specimens were subjected to quasi-static cyclic loading using two horizontally inclined actuators. Measured hysteretic data from these four specimens is discussed. Measured peak shear strengths are compared with predictions in the archival literature and material standards. The test results presented in this thesis can be used to improve predictive equations for peak shear strength of low aspect ratio reinforced concrete walls, generate robust hysteretic models of reinforced concrete shear walls for nonlinear-response-history analysis, and update fragility functions and damage states for use with next generation tools for performance based earthquake engineering.