الفهرس 
concept during the PRESSS research program in the form of a UT-GAP connection in 1996, and a TCY-Gap connection.
Research Progress in the Behavior of Slotted Beam-ColumnOnly 14 pages are availabe for public view
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Abstract
Last earthquake investigations and subsequent laboratory works have shown
that beam-column connections have a key role in reinforced concrete (RC)
structures, as it is responsible for determining the strength degradation and
ductile/nonductile behavior of moment-resisting frame, maintaining the
integrity of the whole structure. Since the 1970s, reinforced concrete moment
resisting frame design has been based upon Capacity Design Philosophy,
which aims to prevent building collapse by ensuring the formation of a ductile
beam-sway mechanism. This is done by detailing ductile plastic hinge zones
in beams and allocating reserve capacity to other elements such that they
remain elastic. While last earthquakes have demonstrated that Capacity Design
Philosophy is successful in avoiding total structural collapse, they have also
emphasized the extensive damage that happens in yielding plastic hinges. In
some cases, the structural damage was too costly to repair and had to be torn
down. In addition to undergoing extensive damage, plastic hinge zones at beam
ends are known to elongate during cyclic deformations, which in turn causes:
column hinging, loss of diaphragm action, tearing of floor slab, and unseating
failure of the floor slab. In light of this, there has been an increasing need to
develop structural systems with high ductility capacity that can withstand
severe earthquake motions with minor damage to minimize repair and business
closure costs after an earthquake. The slotted beam-column connection is a
solution for the abovementioned issues.