Figure 2 provides schematic illustrations of example
UHPC connection details for precast concrete deck panels
supported by steel and concrete girders. The connection at
the girder resembles the traditional connection, with steel
studs or reinforcing bar passing into the haunch. The primary
difference is that the extension height of the connectors
can be reduced so as to not interfere with the precast
concrete deck. The connection at the deck is composed of
a continuous channel or void cast into the underside of the
deck panel through which the bottom mat of transverse
deck reinforcement passes. The gaps between the girder
and deck discrete connectors allow for simple assembly
of components in the field. The channel void under the
precast concrete panel eliminates the need for full-depth
pockets and the need to cluster the girder connectors. The
lower two illustrations in Fig. 2 represent the more severe
cases with a vertical gap between the discrete connectors. The upper two illustrations in Fig. 2 are conservative
alternatives that afford connector overlap while still reducing
potential geometric interferences. Connection details
similar to each of those shown in Fig. 2 were tested in this
study, with a summary provided here and with dimensions
and extensive results provided in the associated report