Effects of stirrup spacing on shear performance of hybrid composite beams produced by pultruded GFRP profile infilled with reinforced concrete

• Autorzy: Özkılıç Yasin Onuralp , Gemi Lokman , Madenci Emrah , Aksoylu Ceyhun

Identyfikatory

DOI

10.1007/s43452-022-00576-5

• Języki publikacji: EN

Abstrakty

EN

Pultruded Glass Fiber-Reinforced Polymer (pultruded GFRP) composite produced by the pultrusion method has become popular in civil engineering applications due to its lightness, corrosion resistance and high strength. However, the use of the pultruded profile combining with reinforced concrete is still limited due to a lack of knowledge. Therefore, the behavior of the pultruded GFRP profile infilled with reinforced concrete beams (hybrid beams) is investigated. This study focused on the effects of stirrup spacing for the hybrid beams. Pursuant to this goal, a total of eight different beams were tested under four-point loading. One reference beam without the pultruded profile and seven hybrid beams having different stirrup spacings were considered. Moreover, the hybrid beams with and without stirrups were wrapped by unidirectional GFRP composite to investigate the effects of stirrup spacing on shear capacity of the beams strengthened by GFRP composite. The experimental findings revealed that tightening stirrups increased the load and energy dissipation capacities of the hybrid beams; however, it could not prevent brittle failure. On the other hand, wrapping hybrid beams with GFRP composite increased the load and energy dissipation capacities and also prevented brittle failure regardless of the presence of the stirrups. Therefore, it is strongly recommended that the unidirectional pultruded profiles should be strengthened with 90° GFRP wrapping to have ductile behavior.

Słowa kluczowe

EN

pultruded GFRP; reinforced concrete; hybrid beam; stirrup spacing; FRP; glass fabric; damage analysis

PL

kompozyt GFRP; beton wzmocniony; belka hybrydowa; rozstaw strzemion; FRP; tkanina szklana; analiza uszkodzeń

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 1
• Strony: art. no. e36, 2023
• Opis fizyczny: Bibliogr. 45 poz., rys., tab., wykr.

Twórcy

autor

Özkılıç Yasin Onuralp

• Department of Civil Engineering, Necmettin Erbakan University, 42140 Konya, Turkey

• https://orcid.org/0000-0001-9354-4784

autor

Gemi Lokman

• Meram Vocational School, Necmettin Erbakan University, 42000 Konya, Turkey

autor

Madenci Emrah

• Department of Civil Engineering, Necmettin Erbakan University, 42140 Konya, Turkey

autor

Aksoylu Ceyhun

• Faculty of Engineering and Natural Sciences, Department of Civil Engineering, Konya Technical University, Konya 42130, Turkey

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Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)