non-conventional silo or bunker

[joanrizu]

Owners of a grains factory have suggested me to approve the design of this type of silo or better "bunker", annexed diagram and photo.
120x60x2.5 mm HSS steel columns each about 1 m, 1 m embedded in the ground, ring beams every 2.50 mm HSS 120x60x2.5 my tensioning rods in 1 / 2 " at each level, joinning all the columns and diagonal in each corner.
Material to contain wheat with density 800 kg/m3.
4mm surface mesh container and sheeting c/15x15 enclosure. I performed a preliminary analysis but with seismic load this silo doesn't work well.
Does somebody know about thes kind of silo?

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[Elite7]

1. Where is/are the discharge hopper(s)?
2. What boundary conditions did you give at the base of the columns?
3. Have you considered the side panels acting as shear walls?

 

[joanrizu]

There is no hopper for download, there is a grain conveyor auger type under the floor.
The columns were modeled fixed at the base.
I believe that the side panels should have better bracing