Planning and calculation of individual silos

3D model of a rectangular silos

Silo constructions are necessary to allow a certain amount of retention, with it the fluctuations between the production and consumption of friable mass goods can be balanced .

In fact the many different sizes can ultimately returned on two basic geometries, that are the circular cylindrical and rectangular silo. The materials are mainly steel, reinforced concrete, aluminum, wood and fiberglass are used, which are sensible to select according to the requirements of the construction project.

The SKI Ingenieurges. mbH. is in the context of structural design of silos and silo working groups. This subject essentially comprises the following scheduled activities in the design phase:

  • Determine the effects and definition of load combinations
  • Strength calculations for silo roofs, walls and floors and for discharge hopper
  • Stability considerations
  • Process design under consideration of the mass flow
  • Dimensioning of installations in silos
  • Assessment of dust explosions and fires
  • Influence the founding of of the silo construction

Structural analysis of a silo hoppers with lateral outlet

In addition to the central outlet of a silo funnel also side outlets are arranged sometimes. For this, the local stress states, inter alia, to assess for burst pressure. If these individual cases do not have the standards (Eurocode) and guidelines (AD2000) are covered, nonlinear buckling analyzes must be carried out with large deformations and elasto-plastic material behavior are taken into account (GMNA).                              

CAD model in 3D
Structural analysis in 3D

Assessment of silo groups

When designing a silo group additional considerations in the ultimate limit state and serviceability are required compared to a single silo. These include, for example:

  • Design and construction of cell cross sections and cover
  • Stress states at different filling
  • Interaction between the soil and the silo group
Deformations in unilateral filling of silos