الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
Punching shear is a type of failure of reinforced concrete slabs subjected
to high localized forces. In flat slab structures this occurs at column support
points. This failure is due to shear. There are two types of punching shear
failure, pure shear punching and flexural punching. The first type occurs in flat
slab with large reinforcement ratios and occurs with small displacement. The
second type occurs in flat slab with small reinforcement ratios and occurs after
large displacement.
This research presents a method for strengthening flat slab-column
connections using internal post-tension cables. Numerical method was used to
study the importance of this method in strengthening.