A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Compression Splices of GFRP Bars in Unconfined and Confined Concrete Columns
Although the use of glass fiber–reinforced polymer (GFRP) bars as compression reinforcement in RC columns has been extensively investigated, no research has been conducted on spliced GFRP bars under compression. This study presents an experimental program aimed at providing more insight into the effects of confinement on the behavior of spliced GFRP bars under compression. The test variables were confinement and compression-bar splice length. The test matrix included 14 circular concrete columns that were tested under concentric compression loading. Nine of the specimens were confined with GFRP spirals at two different spacings (40 and 80 mm), whereas the rest were reinforced longitudinally without transverse reinforcement. The test results are presented and discussed in terms of load–displacement behavior, failure mode, splice strength, and load–strain behavior. The postpeak behavior of the columns improved significantly with increasing levels of confinement. The bond and end-bearing contributions are described in detail. A regression analysis of the experimental results is presented, along with an analytical model proposed for predicting the strength of spliced GFRP bars under compression. The model estimates splice strength with satisfactory accuracy.
Compression Splices of GFRP Bars in Unconfined and Confined Concrete Columns
Although the use of glass fiber–reinforced polymer (GFRP) bars as compression reinforcement in RC columns has been extensively investigated, no research has been conducted on spliced GFRP bars under compression. This study presents an experimental program aimed at providing more insight into the effects of confinement on the behavior of spliced GFRP bars under compression. The test variables were confinement and compression-bar splice length. The test matrix included 14 circular concrete columns that were tested under concentric compression loading. Nine of the specimens were confined with GFRP spirals at two different spacings (40 and 80 mm), whereas the rest were reinforced longitudinally without transverse reinforcement. The test results are presented and discussed in terms of load–displacement behavior, failure mode, splice strength, and load–strain behavior. The postpeak behavior of the columns improved significantly with increasing levels of confinement. The bond and end-bearing contributions are described in detail. A regression analysis of the experimental results is presented, along with an analytical model proposed for predicting the strength of spliced GFRP bars under compression. The model estimates splice strength with satisfactory accuracy.
Compression Splices of GFRP Bars in Unconfined and Confined Concrete Columns
Tabatabaei, Amirhomayoon (author) / Eslami, Abolfazl (author) / Mohamed, Hamdy M. (author) / Benmokrane, Brahim (author)
2019-09-14
Article (Journal)
Electronic Resource
Unknown
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