Effects of exterior post-tensioning on retrofitting deformed wide flange steel beams

• Main Authors: Adiaz, Patricia C., Vidad, David Joseph J.
• Format: text
• Language: English
• Published: Animo Repository 2010
• Subjects: Post-tensioned prestressed concrete; Load factor design; Civil Engineering
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/5159
• Institution: De La Salle University

Structural steel elements may be damaged due to excessive loads. This could be in time deflect or permanently deform. A design particularly intended to retrofit deflected beams was developed. The design provides an Exterior Post-Tensioning (EPT) design that enables a structural steel beam to be retrofitted after it reaches conditions beyond its yield point.This study consists of a test wherein the beam is tested without and with EPT, respectively. Analysis of data through graphs and tables were presented and the effectiveness of the exterior post-tensioning was measured. The EPT was analyzed according to its consistency, serviceability, and load capacity. Data shows that the EPT was able to compensate the weakness of the beam due to excessive loads. Results show that EPT can be applied again and again with no significant change in its effectiveness. Furthermore, in observance of its serviceability, the beam with applied EPT was able to exceed the original strength of the beam. Also, it is significant to note that the load carrying capacity of the beam with EPT increased.