NEHRP Clearinghouse

Effect of Beam Strength and Stiffness on Dynamic Behavior of Reinforced Concrete Coupled Walls. Volume 2: Tables and Figures.
Lybas, J. M.; Sozen, M. A.
National Science Foundation, Washington, D.C. Research Applied to National Needs., July 1977, 340 p.
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This project attempted to develop an understanding of the response of reinforced concrete coupled wall systems to seismic loading. Five test structures (approximately one-twelfth scale) were subjected to one component of the earthquake base motion measured at El Centro, California (1940). The base motions were strong enough to cause yielding of the test structures. A sixth test structure was subjected to slowly applied cyclic lateral loading. An analytical study of the static hysteretic response of the test structures was undertaken. Equivalent viscous damping factors, consistent with the calculated overall structure hysteresis relation, were determined. The variation of damping factor with response mode and response amplitude was studied. The feasibility of simulating the observed dynamic responses with a linear viscously camped analytical model was investigated. Both response-spectrum analyses and response-history analyses were performed. Finally, the experimental results were compared with the results of the analytical studies. This volume contains tables and figures relevant to the text of the report.
Earthquake resistant structures; Reinforced concrete; Seismic loads; Seismic waves; Walls; Ground motion; Earthquake engineering; Computer programming; Loads (Forces); Concrete construction; Earthquakes