Silo Calculation Principles

Silo can be divided into two categories with agriculture silo and industry silo. Agricultural silos are used to store grain, feed and other granular and powdered materials, while industrial silos are for the storage of coke, cement, salt, sugar and other bulk materials. Generally mechanization silos are 1/3 higher than the cost of mechanization Warehouse, but it can shorten the material handling processes, reduce operating and maintenance costs, eliminate heavy bag work, benifit for mechanization and automation of operations, so it has become the main barn forms.



Calculation Principles

Friction between material and the steel silo wall will reduce the pressure from material to the silo bottom and silo wall. In the calculation, the silo can be divided into deep and shallow position according to the stress conditions, when the H / D ≥ 1.5 hour (H is for the position deep, D is the diameter of circular or rectangular warehouse positions long or short side of a regular polygon inscribed circle diameter positions ), the silo can be said the deep position, less than 1.5, said low position. Deep positions should be considered the friction effect, less position can be ignored.

The bottom structure should not only withstand the weight of the material but also need to have discharge function, so we usually funnel silo. Although the flat warehouse's structure is simple, but it needs to fill slope, both feed consumption and weight gain, just for small silo. In the earthquake zone, silos should give priority to supporting structure, but for consideration of natural ventilation and lighting, we also can be support column grid structure.

Silos have characteristics of fast loading, load large and uneven, and thus we should pay more attentions to the foundation investigation and foundation design. And during the initial loading rate and load control uniformity, to avoid accidents. Canadian reserves of 27,000 tons Transco Connor granary, as of the negligence of the survey, and loading too fast first time, tilted up 26°53 ' a night, re-use after straightening.