VSH Turòa nad Bodvou - Nemetschek Scia

Technical data of the project
This project treats the static of a reinforced concrete structure
(C20/25) for a shopping-storing project in Bratislava – Slovakia. The
structure was mounted from September 2006 up to January 2007.
The total length of this structure is 88,5 m, the width approximately
11,4 m, the area 1000 m² and the volume more than 20.000 m³.
The total volume of reinforced concrete for the structure amounted
up to 512 m³ and its weight was 1413,6 t. The building costs are
750.000 Euro.
Description of the structure
The reinforced concrete structure of the shopping- storing project
of the Wellington Company has 7 modules A-G, consisting of box
girders type 4. The storing object has a breadth distance of 11,40m
with expansion gaps of min. 30mm; the overall length of the object
will be 88,50 m.
The supporting structure of the object is made of reinforced concrete
from spilt concrete consisting of vertical wall- and horizontal board
elements forming a compact unit with transversal, as well as longitudinal
stiffening in horizontal and vertical planes. On the supporting
circumferential walls are fastened, on the outside, warming panels
of a planar weight 30 kg/m², protecting the hall from meteorological
and precipitation influences of weather and thermal bridge.
The horizontal structures of the ceilings are formed of monolithic
plates with a thickness of 200 mm with a span of max. 6,30 m.
The mutual clear distance of two supporting walls – the circumferential
one and the internal stairway is 8200 mm, but the plates
will be placed on the longitudinal monolithic extenders, 200 mm
broad, with clear spans 6,30 + 5,60 +3,60 m and the last one will
be a variable one, from 6,10 to 0,00 m, because 7 object of stores
are gradually getting shorter by a constant length 900 mm. The
double- armed stairway is monolithic too. Monolithic circumferential
walls and an internal stairway- holding wall stiffen the individual
objects. On the front shield wall of the stores dominant is
the main entrance with an oblique monolithic roof supported by a
monolithic joist 1500 mm high for a clear span 8,20 m.
Description oh the Parts of Concrete Structure
The primary supporting system of the object is combined in the
transversal, as well as in the longitudinal direction and it has been
calculated for every loading effect. The object of the project in the
static calculation is especially the monolithic structure supported
by circumferential walls from three sides (on the fourth side – the
front one – there is a glassed- in wall) and several supporting
columns in axial distances max. 3,00 m and is considered as one
special unit. On the first storey from the rear side, the ceiling plate
is dimensioned as a bracket with the span 1,20 m, on which the
dodged rear wall of second and third storey will be placed.
The vertical supporting structures of the object, as well as the horizontal
supporting structures of the ceilings will be consist of mono-
lithic plates 200 mm thick from concrete C20/25, which according
to the static calculation are mutually sticked.
The vertical communication areas – stairways – are situated in the
stairway area limited by the internal supporting monolithic walls
200 mm thick. Both arms of the stairway are formed by bent monolithic
plates sticked into pedestal and interpodestal supporting
monolithic plates by anchoring stiffeners. The effective thickness
of the plate is 150 mm.The main pedestal plates are, on the other
hand, inserted into the internal supporting wall and into the
circumferential walls 200 mm thick, which are limiting the stairway
area approximately 5,30 x 2,60 m.
All stiffening elements of the object are monolithic structures of
the supporting system, i.e. they are designed in the longitudinal,
as well as transversal direction and in the ceiling plane monolithic
wall elements and on the fourth storey also supporting columns.
Foundations
The ground of the object of the stores area – setting the lower parts
of the walls will form a reinforced concrete foundation made of
concrete of the class C16/20 as far downward as the non- freezing
depth. Dimensions of the reinforced concrete foundation strip are
transversally 600 x 600 mm approximately to the depth -3,275 m.
The fundaments for the circumference of the object and for the
internal supporting walls around the stairway will follow form
monolithic fundament strips under the supporting walls of the
object.
Material and loading data
Foundation and bearing structures were designed acc. to ENV
1993-1-1:1992 Euro code 3. Design of the device consists of calculation
and evaluation of a number of load cases and their complex
combination effect: Except the dead load (own weight) was considered
live load – for ceilings it is the standardized value 2,50 kN/m²,
for stairway 3,00 kN/m².
Snow loading (area II.) so = 0,70 kN/m2 and wind loading wo =
0,55 kN/m² (during erection and on final building). After that was
considered seismicity 7o MSK-64, category “A” and temperature
loading (shell structure contains a higher temperatures as column
support during operation).
Description of the method of Static calculation
Static calculation is prepared with software NEXIS rel. 3.70. It was
calculated 65 most dangerous combinations acc. to ENV 1993-1-
1:1992 Euro code 3 with coefficient 1,35 in two basic combinations
(bearing capacity and deformations).
Model contains 385 macros 1D and 2D.
Bearing capacity, deformations of the walls and ceilings
• The text enclosure shows bearing capacity of the walls and ceilings
in relevant load case combinations (the same in the graphic
Shopping-storing project in Bratislava
enclosure). The nodes were selected in all four corners on each
floor elevation.
• Horizontal deformation in x, y direction should not exceed
1/1000 of node elevation above support (of the structure as
whole) acc. to recommended limit deformations in ENV 1993-1-
1:1992 Euro code 3. The software evaluates extreme deformations
in every direction separately (x, y, z) as well as maximum
node rotation around axes x, y, z.
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