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Simplified Design Provisions for Hybrid Precast Connections.


pdf icon Simplified Design Provisions for Hybrid Precast Connections. (578 K)
Cheok, G. S.; Lew, H. S.

Wind and Seismic Effects, 29th Joint Meeting of U.S./Japan Panel. Proceedings. U.S./Japan Natural Resources Development Program (UJNR). Technical Memorandum of PWRI No. 3524. May 13-16, 1997, Tsukuba, Japan, Okahaca, M., Editor(s), 149-157 pp, 1997.

Keywords:

concretes; building technology; beam-column; connection; joints; drift capacity; moment capacity; precast; post-tensioning; seismic design procedure

Abstract:

A rational design procedure is presented to compute the probable moment, the nominal moment, and the story drift capacities of a hybrid precast moment-resisting beam-to-column connection. The hybrid connections consist of mild steel which is used to dissipate energy by yielding and high strength prestressing steel which is used to provide the shear resistance through friction developed at the beam-column interface by the post-tensioning force. The design procedure is based on 1/3-scale hydrid precast beam-to-column connections tested at the National Institute of Standards and Technology (NIST). The simplified procedure relies on the stress-strain behavior of mild steel up to its ultimate strength and is based on equilibrium considerations at the beam-column joint.