الفهرس 
LITERATURE REVIEWOnly 14 pages are availabe for public view
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Abstract
The arch action affects the ultimate load capacity of deck slabs.
Arch action can be fully harnessed if the slab is confined
adequately in both the longitudinal and transverse directions. In the
transverse direction, welding steel straps to the top of the girders
can provide the confinement. The confinement in longitudinal
direction is provided by connecting the slab to the girders by means
of suitable shear connectors, and by providing edge beams with
large flexural stiffness in the plan of the slab. The steel-free deck
slab is built using fiber reinforced concrete to control cracking due
to shrinkage, creep and variation of temperature. Others carried out
experimental investigation of deck slabs without internal steel
reinforcement. They used five models: the first and second models
did not have steel straps connecting the top flanges of the girders.
The failure of the deck slabs of these two models was flexural
which affected the entire slab in each case. The third and fourth
models were constructed with transverse steel straps connecting the
top of the girder flanges. The mode of failure in the slabs of the
third and fourth models for loads well away from transverse free
edges was that of a punching shear. The fifth model was performed
to explain the effect of the edge beam and intermediate diaphragms.
Five composite bridges have been recently constructed which are
all discussed in details here. A 3-D finite element model is adopted
to study the behavior of each structural component of the new
system. The model is verified against the available experimental
results. Then the FEM is used to study the effect of different
parameters on the behavior of steel-free deck slab. Conclusions and
recommendations for future work are presented.
Keyword:
Arch Action; Deck Slab; Edge Beam; Fiber Polypropylene;
Haunched Slabs; Straps; Studs; Steel Free Deck; Punching Shear.