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A platform for research: civil engineering, architecture and urbanism
Flexural behavior of FRP-HSC-steel double skin tubular beams under reversed-cyclic loading
https://orcid.org/0000-0003-3015-736X
Abstract This article presents an experimental study on the cyclic behavior of fiber reinforced polymer (FRP)-concrete-steel double skin tubular (DST) cantilever beams, referred to in this article as DSTBs. Four DSTBs constructed of high-strength concrete (HSC) were tested under reversed-cyclic lateral loading. The main parameters under investigation were the size of the inner steel tube, the provision (or absence) of a concrete filling inside the steel tube, and the installation of mechanical connectors in the form of steel rings welded on the inner steel tube. The results indicate that DSTBs exhibit very ductile behavior under reversed-cyclic lateral loading. The results also indicate that the DSTBs with larger inner steel tubes exhibit lower lateral displacement capacities compared to their counterparts with smaller inner steel tubes. It was observed that installation of mechanical connectors on the inner steel tube and concrete-filling the tube both influence the overall behavior and lateral displacement capacity of the DSTBs. Furthermore, the results show that through the use of mechanical connectors the slippage at the interface between the steel tube and surrounding concrete sleeve can be completely eliminated.
Highlights FRP-HSC-steel cantilever DSTBs are tested under reversed-cyclic lateral loading. Effects of inner steel tube size and concrete filling inner steel tube are investigated. DSTBs exhibit a very ductile behavior under reversed-cyclic loading. An increase in inner steel tube size results in a decrease in lateral displacement capacity. Use of mechanical connectors eliminates slips at concrete-steel tube interface.
Flexural behavior of FRP-HSC-steel double skin tubular beams under reversed-cyclic loading
https://orcid.org/0000-0003-3015-736X
Abstract This article presents an experimental study on the cyclic behavior of fiber reinforced polymer (FRP)-concrete-steel double skin tubular (DST) cantilever beams, referred to in this article as DSTBs. Four DSTBs constructed of high-strength concrete (HSC) were tested under reversed-cyclic lateral loading. The main parameters under investigation were the size of the inner steel tube, the provision (or absence) of a concrete filling inside the steel tube, and the installation of mechanical connectors in the form of steel rings welded on the inner steel tube. The results indicate that DSTBs exhibit very ductile behavior under reversed-cyclic lateral loading. The results also indicate that the DSTBs with larger inner steel tubes exhibit lower lateral displacement capacities compared to their counterparts with smaller inner steel tubes. It was observed that installation of mechanical connectors on the inner steel tube and concrete-filling the tube both influence the overall behavior and lateral displacement capacity of the DSTBs. Furthermore, the results show that through the use of mechanical connectors the slippage at the interface between the steel tube and surrounding concrete sleeve can be completely eliminated.
Highlights FRP-HSC-steel cantilever DSTBs are tested under reversed-cyclic lateral loading. Effects of inner steel tube size and concrete filling inner steel tube are investigated. DSTBs exhibit a very ductile behavior under reversed-cyclic loading. An increase in inner steel tube size results in a decrease in lateral displacement capacity. Use of mechanical connectors eliminates slips at concrete-steel tube interface.
Flexural behavior of FRP-HSC-steel double skin tubular beams under reversed-cyclic loading
https://orcid.org/0000-0003-3015-736X
Abstract This article presents an experimental study on the cyclic behavior of fiber reinforced polymer (FRP)-concrete-steel double skin tubular (DST) cantilever beams, referred to in this article as DSTBs. Four DSTBs constructed of high-strength concrete (HSC) were tested under reversed-cyclic lateral loading. The main parameters under investigation were the size of the inner steel tube, the provision (or absence) of a concrete filling inside the steel tube, and the installation of mechanical connectors in the form of steel rings welded on the inner steel tube. The results indicate that DSTBs exhibit very ductile behavior under reversed-cyclic lateral loading. The results also indicate that the DSTBs with larger inner steel tubes exhibit lower lateral displacement capacities compared to their counterparts with smaller inner steel tubes. It was observed that installation of mechanical connectors on the inner steel tube and concrete-filling the tube both influence the overall behavior and lateral displacement capacity of the DSTBs. Furthermore, the results show that through the use of mechanical connectors the slippage at the interface between the steel tube and surrounding concrete sleeve can be completely eliminated.
Highlights FRP-HSC-steel cantilever DSTBs are tested under reversed-cyclic lateral loading. Effects of inner steel tube size and concrete filling inner steel tube are investigated. DSTBs exhibit a very ductile behavior under reversed-cyclic loading. An increase in inner steel tube size results in a decrease in lateral displacement capacity. Use of mechanical connectors eliminates slips at concrete-steel tube interface.
Flexural behavior of FRP-HSC-steel double skin tubular beams under reversed-cyclic loading
Idris, Yunita (author) / Ozbakkaloglu, Togay (author)
Thin-Walled Structures ; 87 ; 89-101
2014-11-06
13 pages
Article (Journal)
Electronic Resource
English
Flexural behavior of FRP-HSC-steel double skin tubular beams under reversed-cyclic loading
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