Earthquake retrofitting of rectangular reinforced concrete columns using fiber reinforced polymers
Many existing buildings have ground floors where the walls are replaced by columns to open the space for retail shopping or parking. Stair cases may not be adequate or positioned eccentrically. This results in so-called soft-stories, one of the most common causes of failure in earthquakes, because the columns are usually not designed for earthquake loading.Deformation capacity and ultimate resistance may be increased easily by confinement, in the case of round reinforced concrete columns. Rectangular columns are commonly encountered in existing build-ings. A conventional confinement technique is not very efficient for rectangular columns.
A system is developed herein to achieve larger plastic deformations and higher load carrying capacity for rectangular reinforced concrete columns.
Also bridges and stone fall protectors with this novel system better resist to effects due to impacts, ex-plosions and earthquakes.
Contact: Dr. Andrin Herwig