“Shear Strengthening of Shear Critical Reinforced Concrete Beams”
| dc.contributor.advisor | G/Youhannes, Esayas (PhD) | |
| dc.contributor.author | Welegebrial, Hagos | |
| dc.date.accessioned | 2018-07-26T06:51:40Z | |
| dc.date.accessioned | 2023-11-11T12:57:00Z | |
| dc.date.available | 2018-07-26T06:51:40Z | |
| dc.date.available | 2023-11-11T12:57:00Z | |
| dc.date.issued | 2016-11 | |
| dc.description.abstract | Upgrading of existing structures becomes necessity due to various reasons; some of those are revised design code and deterioration with time due to environmental effects. Design codes are constantly being revised in many countries including Ethiopia as new loading requirement dictates for higher strengths demanded of structural members like shear, flexure, axial and torsion. This study focuses on the shear capacity assessment and strengthening of shear critical RC beams. In this research eight RC beams were investigated. All beams have the same geometric dimensions and reinforcement ratio (a/d=3.11, ρ=0.01314). The beams were intentionally designed to fail in shear and different types of shear strengthening was implemented for each RC beam by varying the configuration of the stirrups used for shear strengthening. The amount of shear reinforcement utilized for strengthening was kept constant. All the strengthening methods were found to enhance the shear strength of the control RC beams, with varying degree of efficiency. However, a beam strengthen with vertical leg stirrups inserted by drilled along depth of beam and confined using horizontal legs with parallel vertical legs configurations(beam type-3) were found to be the most effective type. Analytical simulation were done using a non-linear 3D finite element formwork using fixed-four way crack model where the path and time dependent constitutive laws for tension, shear and compression are rooted in (DUCOM-COM3D).The simulation result were found to reproduce the experimental results reasonably, verifying the reliability of the mode failure as well. Key words: RC beam, shear, strengthening, vertical legs, confinement | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/10034 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | RC beam, shear, strengthening, vertical legs, confinement | en_US |
| dc.title | “Shear Strengthening of Shear Critical Reinforced Concrete Beams” | en_US |
| dc.type | Thesis | en_US |