Perfomance of reinforced concrete (RC) beam strengthened in shear using inclined stirrups

Ghale, Chandra (2013) Perfomance of reinforced concrete (RC) beam strengthened in shear using inclined stirrups. Bachelors thesis, Dundalk Institute of Technology.

PDF (This work is made available on the understanding that the reader will not publish in any form either the whole or any part of it without permission from the author. This work may not be copied. The copyright of this work belongs to the author.) - Accepted Version Restricted to Registered users only Download (3MB)

Abstract

Shear failures in concrete structures are very hazardous. These failures can rarely be predicted and often happen explosively. For decades, tests have been done to study this phenomenon, in order to try to solve the riddle that shear is. Researchers have become more knowledgeable about shear and what the most important influences are. This project aims to experimentally investigate shear behaviour of RC beam strengthened in shear with an inclined stirrup (45˚, 60˚, 75˚) and comparing the results. The study also aims to compare the Euro code's shear formula with test results. Furthermore, I was also interested in studying the orientation of diagonal shear cracks and its most important influences. A total of six beams were cast, each with different types of shear reinforcement. They were over-reinforced in bending to make sure it fails in shear during the test. First beam was designed with conventional vertical shear reinforcement and second one without shear reinforcement. Three beams were reinforced in shear with an inclined stirrup at an angle of 45˚, 60˚and 75˚ respectively. The last beam was made with shear stirrups inclined at 45˚, 60˚ and 75˚in order to find the most effective technique of shear reinforcement in beam. My findings were that the Eurocode (EC-2: 2004) gives a safe estimation on shear failure of beam. In the shear test, beams with inclined shear reinforcement performed much better than vertical one. In case of beam without shear reinforcement, shear resistance was provided by concrete in compression zone and doweling action of longitudinal steel bars.

Item Type:	Thesis (Bachelors)
Uncontrolled Keywords:	Shear failures; Concrete structures; Reinforced concrete; RC; Eurocode EC-2.
Subjects:	Engineering
Research Centres:	UNSPECIFIED
Depositing User:	Sean McGreal
Date Deposited:	11 Aug 2015 08:34
Last Modified:	11 Aug 2015 08:34
URI:	https://eprints.dkit.ie/id/eprint/471

Actions (login required)

View Item

Downloads