VSH Turòa nad Bodvou - Nemetschek Scia

In general
„PARK ONE“ is an office building in the centre of Bratislava city. It
consists of four underground and nine upper floors. The structure
is designed as a monolithic reinforced concrete skeleton with slabs
without ribs.
The total height of the project above the ground level is 36 m.
The excavation is surrounded on three sides by the main city
infrastructure, which is separated from the excavation only by a
pedestrian sidewalk. The depth of the excavation was 12 m. The
nailed slope with additional ground anchors secured the walls of
the excavation.
The main raft was located about 2 m below the groundwater level,
therefore the hole was stuffed by bentonite aperture to the impervious
neogenic footwall and the water was drained.
Geological conditions
In the geological content of the building area is quarterar and
neogene soil. The surface layer is created by anthropogenic sediments
with the characteristics of dirt-sand accretions with the rest
of the building process sewage. The sediment discharge is up to
1,50 – 2,0m p.t. Quarterar sediments are represented mostly by a
sand-gravel complex. It is usually dirt-sand gravel with boulders up
to 15 cm. Neogene is represented in a depth of 14m p.t. by relatively
impervious negenic grey-green clay.
Foundation
The optimal solution due to the geological conditions was the
shallow foundation – foundation raft in the gravel level. The raft is
1100 mm thick. The external walls of all of the basements are made
of watertight concrete C30/37 with reinforcement fy=460 Mpa.
Multifunctional Offices Building Park One
„PARK ONE“ is an office building in the centre of Bratislava
city. It consists of four underground and nine upper floors.
The structure is designed as a monolithic reinforced concrete
skeleton with slabs without ribs. The total height of the
project above the ground level is 36 m. The excavation is
surrounded on three sides by the main city infrastructure,
which is separated from the excavation only by a pedestrian
sidewalk. The depth of the excavation was 12 m. The nailed
slope with additional ground anchors secured the walls of
the excavation. The main raft was located about 2 m below
the groundwater level. The facade of the object is fully
vitreous, therefore a belt girder was designed on the circumference
of the roof rafts.
Bearing system
The main bearing system of the building is created from a cast
in place reinforced concrete skeleton with reinforcement walls
around the vertical communication cores. The walls thicknesses
go from 300 mm to 200 mm. The object has 4 basement floors
and 9 upper floors. The construction heights of the basement
floors are 2,7 m and 3,9 m, the construction height of the ground
floor is 4,8 m and the construction heights of the remaining floors
are 3,55 m. The prevalent module step in the longitudinal direction
is 7,5 and in the cross direction 7,5 and 5,1 m. The remaining
bearing constructions are reinforced concrete columns and walls.
The type of the concrete of the columns is C30/37. The horizontal
bearing constructions are monolithic, reinforced concrete and
slabs, designed from a C25/30 concrete in the whole extent. The
thickness of the slabs is 230 mm. In order to secure the slab against
the shearing efforts welded reinforcement are placed around the
columns as a shearing reinforcement. The reinforcement of the
slabs is created by the KARI mesh with additional reinforcement.
The facade of the object is fully vitreous, therefore a belt girder is
designed on the circumference of the roof rafts, so that the roof
deformations were eliminated to a required standard.
Structural calculations
The calculations were realized by the SCIA•ESA PT 5.2 software,
using the finite element method. The whole object was simulated
in the 3D model created by 2D – shell elements, which are used
for approximation of the bracing walls and for slabs. Columns
are approximated by the 1D elements. The loads are calculated
according to the valid Slovak standards. Module Soilin was used to
simulate the footwall.
Multifunctional Offices Building Park One
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