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Abergeldie
G Beam
Abergeldie
G beam is a modified steel composite girder with a precast
concrete composite slab. The composite slab is cast prior
to installation of the girder into the structure.
The
concept of Abergeldie G beam is that the live load acts on
the stronger composite section of the girder. The top flange
of the steel girder is no longer required as the composite
concrete slab is capable to take compressive stresses resulting
from flexure. As a result the center of tensile stresses is
further away from the center of compressive stresses - lever
arm is increased - leading to bigger flexural capacity achieved
with less steel material.
Advantages
of the Abergeldie G Beam over traditional composite girders:
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Increased capacity of composite girder by about 25% (3m
to 5m increase of span) if compared with equivalent unit
mass WB or UB sections.
- Elimination
or drastic reduction of deck form-work.
- Reduction
of transport cost to remote site locations if compared with
similar span precast concrete girders.
Stimson's
Creek (Pine Road) Crossing - Abergeldie G Beam used in construction
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