ings, etc. The cellular beams serve for concealing
air ducts and other cabling, the visi-bility of
which is however ingeniously suppressed by
impressive illumination. The investor expressed
the demand for additional sales areas outside the
basic ground plan area of the building. This was
realized by
means of bracket plates
which are
suspended on the steel structure by oblique
tense steel profiles. These “drawers” are arranged
absolutely irregularly on the rear façade of the
object above the railway, it is architectonically
very impressive.
Foundations
Four anchoring bolts with T- heads anchor the
structure into the foundations. Steel concrete
feet are positioned on concrete pilots (each one
with bearing capacity of 500 kN). The foun-
dation of the building on site was very difficult
(pilots).
The
seismicity is
of
7o
MSK-64,
category “A”.
Material and loading data
The horizontal bearing structures of the top of
the building are concrete plates of thickness
100
mm (concrete B30). The foundation and
bearing structures
were designed acc. to ENV
1993-1-1:1992 Euro code 3.
The design of the construction consists of the cal-
culation and the evaluation of a number of load
cases and their complex combination effect: the
dead load (own weight) was considered as well
as the live load - on each floor 4,00 kN/m², on the
stairways
3,00 kN/m², snow loading so
=
0,70 kN/m² and wind loading wo = 0,55 kN/m²
(during erection and on final building).
After that
was considered the seismicity of 7o MSK-64, cat-
egory “A” and temperature loading (shell struc-
ture contains a higher tem-peratures as column
support during operation,
which leads to ther-
mal stresses).
Description of the method of Static
calculation
The static calculation is prepared with software
NEXIS rel. 3.40. Not less than 164 of the
most
dangerous combinations, acc. to ENV 1993-1-
1:1992 Euro code 3 with coefficient 1,35 in two
basic combinations (bearing capacity and defor-
mations), have been calculated. The model con-
tains 1715 nodes, 3177 bars and 1786 macros
1D. The final file was 22,5 MB. The model con-
tains 130 different profile sections of both basic
materials - steel and concrete. The linear base
modulus (3D frame) had to solve 10290 equa-
tions.
The program for the calculation of cellular beams
acc. to procedure by F. Faltus was done with soft-
ware MC rel. 7.
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