Project's Description

The initial design was performed in 2008. During construction, however, need for an alteration of the foundation concept came up, due to important archaeological findings on site.

The new system comprises a stiff, 30cm thick concrete solid grade slab, which is cast independently in each ground floor room. The seismic shear force is distributed along the slab-masonry wall border, in 2 sides for the internal and 1 side for the external walls. These horizontal forces are then trasnferred, through the slab, on the heads of 144, 5 o r7m long micropiles.

Micropile stiffness has been modeled via horizontal and vertical springs at the 144 positions. An amount of seismic shear resistance is still offered by the existing masonry foundation walls, but this is small due to their small stiffness compared to the pile stiffness.

The slab reinforcement results from its function as a diaphragm. The piles are composite, reinforced concrete, with the incorporation of a HEB140 steel section at their upper portion, where shears and moments are higher.

Project's Details

• Client : CHIOS PREFECTURE / LYGEAS S.A.
• Design stages : Foundation Design (all stages)
• Budget (Structural) :
• Design period : 12/2010- 03/2011
• Project State : Completed
• Geotechnical Design: CHRISTOS STRATAKOS