Assessment of Shear Failure for Existing Simply Supported Bridge Girders
| dc.contributor.advisor | Gebreyohannes, Esayas (PhD) | |
| dc.contributor.author | Matebie, Getasew | |
| dc.date.accessioned | 2018-07-26T06:31:46Z | |
| dc.date.accessioned | 2023-11-11T12:57:09Z | |
| dc.date.available | 2018-07-26T06:31:46Z | |
| dc.date.available | 2023-11-11T12:57:09Z | |
| dc.date.issued | 2013-06 | |
| dc.description.abstract | Failure of bridges has been one of the major problems in the transportation and socio-economy of Ethiopia. So researches are the main tools that can help investigate the main causes of bridge failures. Failure of bridges may be due to construction or design problems. This thesis addresses whether shear failure of bridge girders is the cause of bridge failures or not. This study implemented analytical assessment method even though experimental evaluation method can also be performed to rate bridge girders for shear. Analytical assessment method involves only design data during evaluation whereas experimental evaluation takes data directly from bridge girders. In this study an attempt was made to rate bridge girders for shear by analyzing four simply supported bridge girders which are constructed by Amhara Rural Roads Authority. To achieve this objective the research had a methodology of a task involving literature review; discussion and comparison of rating methods and data collection and analysis for shear capacity evaluation. LRFR method of evaluation of bridge girders for shear was adopted. LRFR method of evaluation involves the determination of bridge girder shear capacity and determination of shear due to external applied action. Though there have been several methods of determining shear capacity, Modified Compression Field Theory (MCFT) is used in this thesis. This study showed that 75% of the bridge girders failed to fulfill the requirements of shear capacity for HL-93 design vehicular live load. It also gave that the bridges have shear capacity to resist the shear which can arise from ERA Legal loads. This study also showed that the average concrete shear capacity, average transverse reinforcement shear capacity and average nominal shear capacity of the four bridge girders determined using Modified Compression Field Theory are 25.53%, 58.88% and 41.60% higher than those obtained from 450 Truss Model respectively. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/10025 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Civil Engineering | en_US |
| dc.title | Assessment of Shear Failure for Existing Simply Supported Bridge Girders | en_US |
| dc.type | Thesis | en_US |