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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: 8th Us National Conference On Earthquake Engineering 2006 Título del capítulo: Behavior of concrete wal ls for economic housing
The seismic behavior of 14 full-scale reinforced concrete walls designed to fail in shear is described. Walls were square and prismatic. Variables studied were the type of concrete, the amount of web reinforcement and the test procedure. Wall properties were typical of low-rise housing in Mexico; that is, wall thickness, web reinforcement and concrete strengths were low. Walls made of normalweight concrete and self-compacting concrete exhibited larger strengths than those of cellular concrete walls. Behavior of normalweight and self-compacting walls was, in general, comparable. Walls with 50% the minimum code prescribed wall reinforcement exhibited comparable displacement ductility to that in walls reinforced with 100% the minimum amount, thus enabling them to be used in concrete housing. Lateral strength and ductility of walls tested under monotonic loading were larger than equivalent walls tested under cyclic loading. An analytical model aimed at predicting wall shear strength is presented. The model considers the effects of concrete strength, amounts of vertical and horizontal reinforcement and axial stress on the shear strength.