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

Date of Publication

2010

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Civil Engineering with Specialization in Structural Engineering

Subject Categories

Civil Engineering

College

Gokongwei College of Engineering

Department/Unit

Civil Engineering

Thesis Adviser

Bernardo A. Lejano

Defense Panel Chair

Andres Winston C. Oreta

Defense Panel Member

Jonathan R. Dungca
Mary Ann Q. Adajar

Abstract/Summary

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.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU15902

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

xiii, 143 leaves, illustrations (some color), 30 cm.

Keywords

Post-tensioned prestressed concrete; Load factor design

Embargo Period

4-9-2021

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