Nonlinear Material Behavior of the Bridge Components - Finite Element Analysis and Design of Steel and Steel-Concrete Composite Bridges - page 85

Prestressed hollow core
concrete slab

In situ concrete

Opened core

Transverse reinforcement

Steel beam with prewelded studs
Figure 2.16 Prestressed hollow core concrete-steel beam construction.

Transverse reinforcement g

In situ concrete

Void

Headed stud

Plug

Bearing size

Precast HCU

Steel beam

Figure 2.17 Details of the prestressed in situ joint of composite beam with hollow core
concrete units.

the slab. Composite construction incorporating prestressed hollow core
concrete units is intended to complement the traditional composite con-
struction with steel decking and to offer advantages where, for reasons of
design or environmental considerations, a steel decking system may be pre-
cluded. The main advantages of this form of construction are that the precast
concrete slabs can span up to 15 m without propping, the erection of 1.2 m
wide precast concrete units is simple, and quick and shear studs are pre-
welded on beams before delivery to site, thereby offering additional savings
associated with shorter construction times.