VSH Turòa nad Bodvou - Nemetschek Scia

In general
„Universo“ is a multifunctional building near the centre of Bratislava
city. Neighbouring streets and other buildings surround the
excavation. The architectural design was made by Partner-Projekt
s.r.o., Bratislava. The building is designed as a dilatation unit, even
by the difference in height – 8 and 21 floors. The maximal height
of the building is 78 m.
Geological conditions
According to the results of the geological investigation of the
surface, the area consists of anthropogenic sediments of approximately
2-3m depth. Underneath descends a complex of dirt-sand
sediments silt up by the Danube River; it’s mostly sand-clay soil. The
footwall of the stated is mainly consistent but it is also composed
of sand-clay grounds and a gravel-sand complex (about 10-12m
deep). This gravel is mostly mellow. There are neogenic sediments
below.
Multifunctional Building Universo
„UNIVERSO“ is a multifunctional building near the centre
of Bratislava city. Neighbouring streets and other buildings
surround the excavation. The building is designed as a dilatation
unit, it is very remarkable by the difference in heights,
one part is composed of 8 floors, the other one of 21 floors.
The maximal height of the building is 78 m.
The main bearing system of the building is created starting
from a cast in place reinforced concrete skeleton with reinforcement
walls around the vertical communication core.
Underground water was found during the exploring bores in the
depth between 5,10 to 5,30 m under the surface.
Foundation
The optimal solution due to the geological conditions is the foundation
raft in the gravel level integrated under the tower with the
920 mm thick piles, which are concurrent with the foundation raft.
Piles are designed to eliminate the different settlements under the
tower and the 8-floor part. The raft will be locally thickened in the
columns area up to 1200 mm. The retaining walls, 550 mm thick,
are designed around all excavations and the depth of the foundation
is 10,2 m. The retaining wall is used as a structural bearing
element and because of the level of the underground water, it has
to be waterproof.
Bearing system
The main bearing system of the building is created starting from
a cast in place reinforced concrete skeleton with reinforcement
walls of the vertical communication core. The walls thicknesses go
from 300 mm to 200 mm. The object has 3 basement floors and 21
upper floors. The construction heights of the basement floors are
2,8 m and 3,15 m, the construction height of the ground floor is
5,3 m, the 2nd and 3rd floor have a construction height of 3,6m,
and the construction heights of the remaining floors are 2,975 m.
One part of the ground floors’ surface is created by a space going
through 2 floors, so the columns height in these places reaches
9 m. The prevalent module step in the longitudinal direction is 5,0
and 5,4 m, and in the cross direction 5,4 and 6,2 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 200 and 210 mm, except the slab above the
1st basement, because the implicit loads during the construction
were supposed. Therefore the thickness of this slab is 350-400 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.
Structural calculations
The SCIA•ESA PT R6.0 software, using the finite element method,
realized the calculations. The whole object was simulated in the
3D model. The loads are calculated according to the valid Slovak
standards. The module Soilin was used to simulate the footwall;
the piles were simulated by the flexible support. The underground
construction wall was simulated as a flexible line support with firmness
calculated from the vertical reactions and settlement of max
10 mm.
Multifunctional Building Universo
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