Parametric Study of Reinforced Concrete Deep Beams with Rectangular Web Openings Subjected To a Static Monotonic Loading
| dc.contributor.advisor | Adil, Zekaria (PhD) | |
| dc.contributor.author | Pinel, Getu | |
| dc.date.accessioned | 2020-11-19T08:43:50Z | |
| dc.date.accessioned | 2023-11-11T12:56:25Z | |
| dc.date.available | 2020-11-19T08:43:50Z | |
| dc.date.available | 2023-11-11T12:56:25Z | |
| dc.date.issued | 2020-07 | |
| dc.description.abstract | Transverse openings in beams are usually present in building, they are provided for the purpose of allowing the passage of service lines such as sanitary pipes, electric cable ducts, air conditioning ducts and telephone lines. The presence of web openings in beams tends to reduce the flexural and shear strength of the beams. Effect of such openings may even be more dangerous in reinforced concrete deep beams, because deeps beams like transfer girders where the column is directly supported on them, are in general subjected to a very large concentrated load. Since different building codes do not give any provisions regarding RC deep beams with transverse web openings and the effect of parameters like degree of interruption of natural load path, openings size, Aspect ratio of opening sides and compressive strength of concrete on the behavior of such types of beams have not been investigated thoroughly. This research attempts to study the effects of the above-listed parameters using a finite element software VECTOR. In the first portion, the finite element model of a Test beam is validated and verified using the results of an experimental test. Results shows that the software accurately predicts the maximum deflection and failure load of the test beams. The error obtained for both cases where under 5%, which is does not exceed the minimum specified tolerance. After the finite element model was validated, a total 73 of numerical simulation were conducted in an attempt to investigate each of the parameters mentioned earlier. The output parameters that was interest to this research was failure load of the test beams, maximum mid span deflection of the beams, cracking load and the maximum crack width. Results showed that, when openings are placed within the shear span of the beam, as the degree of interruption of the natural load path and opening size increases, the failure load (shear strength) of the beams drastically decreased and strength reduction as high as 95% were observed. However, when openings were placed within the flexural region, failure load of the beams were almost similar to the failure loads of the solid beams without web openings but a considerable increase in deflection as high as 39% was obtained. In addition, the magnitude of cracking load decreased when the size of openings located within the shear span increased. Furthermore, results indicate that, increasing the concrete compressive strength will only be effective in counteracting the strength loss due to web openings when the openings are small (i.e. opening area < 8.59% of the shear span area). For large openings, increasing the concrete grade will have insignificant effect on failure load (shear strength of the beam). | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/23392 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | einforced Concrete Deep Beams | en_US |
| dc.subject | Parametric Study | en_US |
| dc.subject | Static Monotonic Loading | en_US |
| dc.title | Parametric Study of Reinforced Concrete Deep Beams with Rectangular Web Openings Subjected To a Static Monotonic Loading | en_US |
| dc.type | Thesis | en_US |