Experimental behavior of double-row Y-type perfobond rib shear connectors

• Published in: Journal of constructional steel research Vol. 150; pp. 221 - 229
• Main Authors: Kim, Sang-Hyo, Han, Oneil, Kim, Kun-Soo, Park, Jun-Seung
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.11.2018
• Subjects: Double-row Y-type perfobond rib shear connectors; Ductility; Push-out tests; Shear resistance; Spacing; Push-out tests; Spacing; Double-row Y-type perfobond rib shear connectors; Shear resistance; Ductility
• ISSN: 0143-974X; 1873-5983
• DOI: 10.1016/j.jcsr.2018.08.012

Although existing studies have only analyzed Y-type perfobond rib shear connectors arranged in a single row, practical applications can apply numerous such connectors to beams with narrow spaces between them. The present study aimed to evaluate the structural behavior of double-row Y-type perfobond rib shear connectors, and thus describe grouped Y-type perfobond rib shear connectors. Push-out tests were conducted in accordance with Eurocode-4, and the relative slip, shear resistance, and ductility were measured. There were two primary variables (spacing and number of Y-type perfobond rib shear connectors) and three types of test specimens: single row, double rows (120 mm spacing), and double rows (300 mm spacing). The representative single-row specimen was used to validate the push-out test results by providing a comparison with previous tests, and provided a shear resistance reference value. The other two specimen types consisted of multiple Y-type perfobond rib shear connectors attached in parallel to an H-beam. Test results revealed that shear resistance increased as the number of shear connectors increased; however, the structural behavior depended on the shear connector spacing. The specimen with wider spacing demonstrated a better ultimate load and ductility relative to the specimen with narrower spacing. Wider shear connector spacing thus leads to better structural behavior retention. •Evaluated shear behavior of double-row Y-type perfobond shear connectors•Main variables were spacing and number of shear connectors.•Shear resistance increases with increase in number of shear connectors.•Wider spacing led to better ultimate load and ductility.