KAARINA,
FINLAND
The advantage of this solution compared
with a mushroom slab structure is speed.
Construction can be implemented directly
to the level ground. Thus, there is no need
to mold holes needed for casting concrete
reinforcement around the piles, which
significantly shortens construction time.
COSTS OF THE SOLUTION ARE
OPTIMIZED IN THE DESIGN PHASE
WSP Finland's designer and Project Engineer
Jaakko Ingerttilä says that the design of a
THE PILE-SUPPORTED SLAB
WAS STRENGTHENED WITH
PUNCHING REINFORCEMENT
At sites that require pile-driving of the
roadbed, the pile-supported slab is usually
implemented as a so-called mushroom slab
structure. In it, the connections between
the piles and the slab are strengthened
using a concrete bulge, which is cast
on the upper part of the pile and which,
together with the pile, strengthens the
concrete slab cast on top of it.
The functioning of Peikko's PSB®
Punching Reinforcement System is based
on the excellent anchoring characteristics
of the product. Reinforcement rails form a
star-like structure inside the concrete slab.
It is fastened with thin binding wires into
the slab's concrete reinforcement above
each pile.
The punching reinforcement system
speeds up the construction of a pilesupported
slab significantly.
pile-supported slab requires multidimensional
optimization. The aim is to achieve
the best possible cost-efficiency. In the
design, for example the type and bearing
capacity of the soil, as well as the load and
elevation of the road structure, are taken
into consideration. These factors have an
impact on the selection of the pile type
and on the positioning of the piles beneath
the slab. In addition, the property class of
the concrete in the slab, slab depth and
reinforcement are optimized.
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