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Effect of Beam Strength and Stiffness on Dynamic Behavior of Reinforced Concrete Coupled Walls. Volume 1: Text.
Lybas, J. M.; Sozen, M. A.
National Science Foundation, Washington, D.C. Research Applied to National Needs., July 1977, 256 p.
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This report 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. The experimental program is outlined in Chapter 2, while the results are presented in Chapter 3. The details of experimental procedures, along with the characteristics of the test specimens and materials, are given in Appendix A. 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 study of static hysteretic response is presented in Chapter 5. The feasibility of simulating the observed dynamic responses with a linear viscously dampled analytical model was investigated. Both response-spectrum analyses and response-history analyses were performed. The study is presented in Chapter 7. Finally, the experimental results were compared with the results of the analytical studies. The comparison is described in Chapter 8.
Earthquake resistant structures; Reinforced concrete; Seismic loads; Seismic waves; Walls; Ground motion; Earthquake engineering; Computer programming; Loads (Forces); Concrete construction; Earthquakes