Simplified Design Procedure for Hybrid Precast Concrete Connections.
Simplified Design Procedure for Hybrid Precast Concrete
Connections.
(2520 K)
Cheok, G. S.; Stone, W. C.; Nakaki, S. D.
NISTIR 5765; 92 p. February 1996.
Sponsor:
Concrete Research Council, Detroit, MI
Available from:
National Technical Information Service
Order number: PB96-154836
Keywords:
building technology; beam-column; concretes;
connections; 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
three 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 equations at the beam-column joint. The
appendices include a commentary of the design procedure,
proposed evaluation criterion for this hybrid
connection, sample calculations using the design
procedure, and other calculations used to develop the
design criterion.
Building and Fire Research Laboratory
National Institute of Standards and Technology
Gaithersburg, MD 20899