Analytical studies on externally post tensioned concrete girders with existing shear cracks
Paper
Paper/Presentation Title | Analytical studies on externally post tensioned concrete girders with existing shear cracks |
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Presentation Type | Paper |
Authors | Suntharavadivel, Thuraichamy Guganesan (Author) and Aravinthan, Thiru (Author) |
Journal or Proceedings Title | Proceedings of the 23rd Biennial Conference of the Concrete Institute of Australia: Concrete for Future |
Number of Pages | 9 |
Year | 2007 |
Place of Publication | Adelaide, Australia |
ISBN | 090937578X |
Web Address (URL) of Paper | http://www.plevin.com.au/concrete2007/index.htm |
Conference/Event | 23rd Biennial Conference of the Concrete Institute of Australia: Concrete for Future |
Event Details | 23rd Biennial Conference of the Concrete Institute of Australia: Concrete for Future Parent Biennial Conference of the Concrete Institute of Australia Event Date 18 to end of 20 Oct 2007 Event Location Adelaide, Australia |
Abstract | In recent years, the important of the maintenance, rehabilitation, and strengthening of reinforced concrete bridges has increased due to various factors including increase in traffic volume and weight, structural aging and exposure to adverse environmental conditions. External post-tensioning is a suitable technique for rehabilitation or strengthening of concrete bridges. While external post tensioning have been effectively used for the flexural strengthening of existing bridges, recent experimental investigations have shown that the efficiency of the shear strengthening using external post tensioning is significantly reduced by the existing shear cracks. The effect of the existing shear cracks is a complex function depending on a number of parameters including width of the cracks, crack inclination, shear reinforcement ratio and concrete strength. In order to analytically investigate the effect of such shear cracks in externally post-tensioned bridge members, numerical analysis was carried out using ABAQUS software. This paper focuses on a simply supported reinforced concrete girder strengthened by external tendons with existing shear cracks. The accuracy of this type of analytical modelling is verified by comparing with the experimental results conducted on similar reinforced concrete girders. |
Keywords | external post tensioning, strengthening, shear crack, member capacity, repair, epoxy injection |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre of Excellence in Engineered Fibre Composites |
https://research.usq.edu.au/item/9y52q/analytical-studies-on-externally-post-tensioned-concrete-girders-with-existing-shear-cracks
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