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Prestressed reinforced concrete ceiling 
of a sports complex "Victoria"

object model

  It carried out a verification calculation and expertise span from prestressed concrete.

  Plate made of heavy concrete class B30. It has internal reinforcement. Armature A500 grade (without pre-deformation). Geometric plate dimensions: length 39 000 mm, width 27 000 mm, height 1500 mm. Total estimated model plate is presented below.

 
Fig. 1 fragment slab drawing
 
Fig. 2 solid model slab
 
Fig. 3 Detail of a solid plate model
 
. 4 Scheme of concrete reinforcement coating
 
Fig. 5 Detail of the reinforcement plate model
 
Fig. 5 Detail of the reinforcement plate model A

      Considered overlap pivotally supported on columns and walls of the building. 

 
Fig. 5 Detail of the reinforcement plate model B
 
Fig. Scheme 7 supports installation in the calculation model

Load, impact and combinations thereof

     load values ​​were set in accordance with the requirements

     1. SP 20.13330.2011 Loads and effects.

     Uploading models performed several load types: constant (own weight of the structure) and time (the load of the weight of the equipment, the people, the stored materials and products, and snow load).

Fig. 8 Driving snow load reinforced concrete slab model

After all the stress on individual loadings were created linear combinations of loads to which each of the loadings entered with the corresponding coefficients.

The calculation results

 
Fig. 10 axial stress distribution map in the armature, MPa
 
Fig. 10 axial stress distribution map in the armature, MPa
 
Fig. 11 Map of the distribution of total displacement reinforced concrete slab (scale factor 250) mm
 
Fig. 12, vertical displacement distribution map reinforced concrete slab (scale factor 250) mm
 
Fig. 13 Map concrete slab strain
 
 
 
 
 
 
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