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- Title
Reinforced Concrete Coupling Beams--Part I: Testing.
- Authors
Naish, David; Fry, Andy; Klemencic, Ron; Wallace, John
- Abstract
An efficient structural system for tall buildings to resist earthquake loads consists of reinforced concrete (RC) shear walls connected by coupling beams. Construction of coupling beams that satisfy the strength and detailing requirements set forth in ACI 318-05 for diagonally reinforced coupling beams is cumbersome and costly; therefore, ACI 318-08 provides a new detailing option that aims to improve the constructibility while maintaining adequate strength and ductility. Eight 1/2-scale specimens were tested to compare the performance of beams constructed using new and old detailing options, to compare beams with diagonal reinforcement to beams with straight bars at higher aspect ratios, and to assess the impact of reinforced and post-tensioned (PT) slabs. Test results indicate that the new detailing approach provides equal, if not improved, behavior as compared to the alternative detailing approach and that including a slab had only a modest impact on strength, stiffness, ductility, and observed damage.
- Subjects
REINFORCED concrete; SHEAR walls; TALL buildings; PRECAST concrete; CONSTRUCTION slabs; DUCTILITY
- Publication
ACI Structural Journal, 2013, Vol 110, Issue 6, p1057
- ISSN
0889-3241
- Publication type
Article