143 Technologické centrum SSE (EOS) Zili Technical data of the project This project contains the static of a reinforced concrete structure (C30/37) for the Technological centre of the EOS Company in Žilina – Slovakia, where the object will be mounted from April 2007 to January 2008. The total length of this object is 61,95 m; its width is approximately 22,6 m, the area 1400 m², the volume more than 30.000 m³. The total volume of reinforced concrete for the structure amounted to 1846 m³ and its weight to 5415,3 t. The building costs are 1,750.000 Euro. Description of the structure The reinforced concrete structure of the Technological Centre of the EOS Company has 10 modules 1-10, consisting of a spaceframed type of a 4-storied construction having a width of 22,6 m and an overall length of 61,95 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 longitudinal stiffening in horizontal and vertical planes. On the supporting circumferential walls are fastened on the outside warming panels of a planar weight of 30 kg/m²; this is protecting the hall from meteorological and precipitation influences of weather and thermal bridge. The horizontal structures of the ceilings form monolithic plates of a thickness of 250 mm in a span of max. 7,30 m. The mutual clear distance of two supporting walls and columns will be variable from 6,50 to 7,50 m. The double-armed and triple-armed stairway is monolithic too. Monolithic circumferential walls and an internal stairway- holding wall stiffen the individual objects. On the front occurs the dominant main entrance with an oblique monolithic roof supported by a monolithic joist of 1500 mm; at the second storey of the side wall is the bracket spread 7,40 m; due to mutual co-operation of the monolithic elements this could be solved in a satisfactory way. Description of the Parts of the 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 main object of the project in the static calculation is especially the monolithic structure supported by circumferential walls and several supporting columns in axial distances max. 7,50 m, this 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 7,40 m, on which the dodged rear wall of the second, third and fourth 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 monolithic plates of a thickness of 250 mm out of concrete C30/37, which according to the static calculation are mutually stuck. The vertical communication areas – stairways – are situated in the stairway area limited by the internal supporting monolithic walls, 200 mm thick. All arms of the stairway are formed by bent monolithic plates stuck 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 7,00 x 2,80 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. Foundations The foundation is made out of reinforced concrete strips made of concrete of class C20/25. The dimensions of the reinforced concrete foundation strips are transversally 800 x 500 mm approximately with a depth of -2,15 m. The strips will be mutually bound by a monolithic reinforced concrete base plate (400mm thick) in order to eliminate uneven settings. The fundaments for the circumference of the object and for the internal supporting walls of the cores around the stairway will follow the form of the monolithic fundament strips under the supporting walls of the object harnessed together with the base plate. Material and loading data The foundation and bearing structures were designed acc. to ENV 1993-1-1:1992 Euro code 3. The design of the device consists of the calculation and the evaluation of a number of load cases and their complex combination effect. Except the dead load (own weight) was considered the live load – for ceilings it is the standardized value 2,50 kN/m², for stairways 3,00 kN/m Snow loading (area II.) – base value so = 0,70 kN/m2 and wind loading wo = 0,55 kN/m2 (during the erection and with the final building). After that was considered the seismicity 7o MSK-64, category “A” and temperature loading (the shell structure contains a higher temperature as the column support during the operation). Description of the method of Static calculation The static calculation is prepared with NEXIS rel. 3.70. The program calculated 325 of the most dangerous combinations acc. to ENV 1993-1-1:1992 Euro code 3 with a coefficient of 1,35 in two basic combinations (bearing capacity and deformations). The model contains 865 macros 1D and 2D. Bearing capacity, deformations of the walls and ceilings • The text enclosure shows the bearing capacity of the walls and ceilings in relevant load case combinations (the same in the graphic enclosure). The nodes were selected in all four corners on each floor elevation. • The horizontal deformation in x, y direction should not exceed 1/1000 of the node elevation above the support (of the structure as whole) acc. to the 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 the axes x, y, z. The text enclosure shows extreme deformations selected from all parts in the structure.
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