Structural behaviour of distressed and strengthened post-tensioned box beams
This study focuses on the behaviour of post-tensioned box beams with snapped prestress cables. It also includes an investigation into the effectiveness of using select strengthening methods on distressed box beams. All beams were subjected to flexural-shear-torsional loads. The results show that sna...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
ACC Limited
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/16867/1/Structural%20behaviour%20of%20distressed%20and%20strengthened%20post-tensioned%20box%20beams.pdf |
| Summary: | This study focuses on the behaviour of post-tensioned box beams with snapped prestress cables. It also includes an investigation into the effectiveness of using select strengthening methods on distressed box beams. All beams were subjected to flexural-shear-torsional loads. The results show that snapping 15% of the prestressing cable area resulted in a 74% increase in deformation at service load and a 22% decrease in ultimate load. The snapping of prestress wires also increased the stresses in the snapped cables by 70%. All the strengthening techniques used effectively restored the beam performance at service and overcame the effect of cable snapping. |
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