INNOVATIVE METHODS IN SHEAR REINFORCEMENT OF REINFORCED CONCRETE BEAMS
| Main Author: | Moayyad Al-Nasra |
|---|---|
| Format: | Article Journal |
| Terbitan: |
, 2017
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/1050407 |
Daftar Isi:
- Shear Reinforcement of reinforced concrete members has been great challenge, especially for reinforced concrete beams. The sudden shear failure of reinforced concrete beams due to excessive shear forces made the design for shear reinforcement even more challenging. This type of failure is completely undesirable and it demands higher factor of safety. This pushed researchers to look for other alternatives. Several alternatives to the traditional shear reinforced will be introduced and discussed in this study. New concept of shear reinforced called swimmer bars shear reinforcing system is explored in this study. This new type of swimmer bars require no welding but perform as good as the welded swimmer bars. This study focuses on new and innovative type of swimmer bars. This new swimmer bars system used in this study is called three dimensional space swimmer bars system. This type of swimmer bars are proven to be effective in taking care of the shear forces in reinforced concrete beams. Also, this type of improved swimmer bars system improves on the shear failure mechanism of reinforced concrete beams. Several beams were prepared and tested in the lab. Three different types of beams were prepared; beams reinforced with the new swimmer bars system, beams reinforced with welded swimmer bars system, and beams reinforced with the traditional stirrups. The results of the tests are discussed and presented. The three dimensional space swimmer bars system is basically a reinforcing bar bent several times in the three dimensions forming special configuration along with its coupling swimmer bar. This configuration makes the shear reinforcement system act as plane-crack interceptor rather than linear bar-crack interceptor. This new type of shear reinforcement is proven to be effective and economical. Flexural cracks are monitored throughout the test. The deflection of the beams under gradually increasing load is also measured and presented in this study