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Strengthening of short splices in RC beams using post-tensioned metal straps
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Helal, Yasser, Garcia, Reyes, Pilakoutas, Kypros, Guadagnini, Maurizio and Hajirasouliha, Iman (2016) Strengthening of short splices in RC beams using post-tensioned metal straps. Materials and Structures, 49 (1-2). pp. 133-147. doi:10.1617/s11527-014-0481-6 ISSN 1359-5997.
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WRAP-strengthening-short-splices-RC-beams-Garcia-2016.pdf - Accepted Version - Requires a PDF viewer. Download (4026Kb) | Preview |
Official URL: http://dx.doi.org/10.1617/s11527-014-0481-6
Abstract
This paper investigates the effectiveness of a novel and cost-effective strengthening technique using Post-Tensioned Metal Straps (PTMS) at enhancing the bond behaviour of short lap spliced steel bars in reinforced concrete (RC) beams. Twelve RC beams with a short lap splice length of 10d b (d b = bar diameter) at the midspan zone were tested in flexure to examine the bond splitting failure. The effect of confinement (no confinement, internal steel stirrups or external PTMS), bar diameter and concrete cover were examined. The results show that, whilst unconfined control beams failed prematurely due to cover splitting, the use of PTMS confinement enhanced the bond strength of the spliced bars by up to 58 % and resulted in a less brittle behaviour. Based on the test results, a new analytical model is proposed to predict the additional bond strength provided by PTMS confinement. The model should prove useful in the strengthening design of substandard lap spliced RC elements.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
| Library of Congress Subject Headings (LCSH): | Concrete beams, Reinforced concrete | ||||||||
| Journal or Publication Title: | Materials and Structures | ||||||||
| Publisher: | Springer | ||||||||
| ISSN: | 1359-5997 | ||||||||
| Official Date: | January 2016 | ||||||||
| Dates: |
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| Volume: | 49 | ||||||||
| Number: | 1-2 | ||||||||
| Page Range: | pp. 133-147 | ||||||||
| DOI: | 10.1617/s11527-014-0481-6 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Reuse Statement (publisher, data, author rights): | This is a post-peer-review, pre-copyedit version of an article published in Materials and Structures. The final authenticated version is available online at: http://dx.doi.org/10.1617/s11527-014-0481-6”. | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 20 March 2019 | ||||||||
| Date of first compliant Open Access: | 26 March 2019 |
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