As is the case all over the world, it is not possible to escape from natural disasters in Turkey. One of the biggest dangers of our country is earthquake. Although various steps have been taken to make buildings more robust in this regard, column strengthening process It is a subject that everyone is curious about. So what can be done to make columns more durable?
Is my house earthquake resistant, should I strengthen columns?
Concrete columns are basic structural elements that carry loads in buildings. Over time, columns may wear out or need to be refitted to make them stronger. Colon strengthening techniques It is preferred to increase the load carrying capacity of reinforced concrete columns.
There are several reasons for strengthening concrete columns. First of all, the current loads on the column may have increased due to heavier equipment. It may also have insufficient strength due to old construction techniques. Columns have also been used for many years steel corrosion or cracks in concrete may weaken due to
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The three main techniques used to strengthen the colon are; It is classified as reinforced concrete cladding, steel cladding and fibre-reinforced polymer (FRP) cladding.
reinforced concrete sheathing
reinforced concrete sheathingis done by building formwork around the existing column. With this technique, the cross-sectional area is expanded and both newer and higher strength concrete is poured. Additionally, rebars are mechanically connected to the existing column. In this way, the tensions between new and old concrete are equalized.
steel sheathing
steel sheathingIt is made with steel plates placed around the columns and permanently attached. It is especially preferred in narrow areas and relatively small columns. Steel resists high pressure and helps the column transfer high stress to the foundation.
Fiber fiber reinforced polymer (FRP)
FRP process; It is made by placing carbon/glass fiber sheets or epoxy-filled polymer around the column. The composite material is intended to surround the column and shake less against the risk of earthquake. This process, also called FRP locking, increases the ductility of concrete under extreme loading.
There are three basic column sheathing techniques for earthquake-resistant structures. With these methods, you can restore the structural integrity of overloaded, damaged or worn reinforced concrete columns. However, we recommend that you carry out the entire process with experts.