to fill the gap between the threaded rod and the sleeve.
Finally, the concrete recesses at the top of the precast concrete
barrier wall (Fig. 1) were grouted.
Figure 2 shows the proposed vertical joint between precast
concrete barrier wall segments. In this case, a hollow structural
shape (HSS) 102 × 102 × 9.5 mm (4 × 4 × 3
⁄8 in.) tube was embedded at one end of the barrier wall
segment, with four shear studs welded to it to provide
anchorage resistance with concrete. On the adjacent
precast concrete barrier wall segment, an S75 × 11 (S3 ×
7.5) steel member was embedded halfway into the concrete
with a similar arrangement of shear studs to that of
the HSS. To activate the joint resistance, one barrier wall
segment was laid over the deck slab. Then the adjacent
barrier wall with the S-shaped steel beam was laid over the
deck slab vertically so that the projecting portion of the
S-shaped member slides through a vertical slot in the HSS
skin embedded in the other barrier wall edge (section b-b
in Fig. 2). The HSS was then filled with concrete grout to
fix it in place, enhancing the rigidity and continuity of the
barrier-to-barrier vertical joint to resist vehicle impact