Vol. 22, No. 3, pp. 315-322 (2026)
STUDY ON SHEAR TEST AND CALCULATION METHOD OF CORROSION COLD-FORMED THIN-WALLED STEEL WITH SELF-DRILLING SCREW-PULL RIVET HYBRID CONNECTION
Yun-Peng Chu, Ming-Bo Huang *, Xue-Qin Chen and Jin-Rong Fu
School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.)
Received: 25 July 2025; Revised: 11 November 2025; Accepted: 12 November 2025
DOI:10.18057/IJASC.2026.22.3.7
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ABSTRACT
This paper investigated the effects of corrosion on the shear performance of cold-formed thin-walled steel connections. Two types of connections were studied, specifically the pure self-drilling screw connection and the self-drilling screw-pull rivet hybrid connection. 120 cold-formed thin-walled steel connection specimens accelerated by the outdoor periodic automatic spray salt spray test were subjected to the shear test. The failure mode, shear capacity, and load-displacement curve were obtained. Subsequently, the test results were compared with those of the uncorroded specimens. The results indicated a significant degradation in the mechanical properties of the connection plate due to the corrosion. As the weight loss rate increased, a linear decrease occurred. Under the same weight loss rate, the shear capacity of the pure self-drilling screw connection decreased more than that of the self-drilling screw-pull rivet hybrid connection. This phenomenon became more obvious with the increase of ageing time. When the weight loss rate was 25.1%, the shear capacity of the 0.8 mm pure self-drilling screw connection decreased by 17.89%, while the self-drilling screw-pull rivet connection decreased by only 7.24%. The calculation equation of the shear capacity for pure self-drilling screw connections and self-drilling screw-pull rivet hybrid connections under the condition of corrosion damage were obtained. This calculation provided a reference for determining the shearing capacity of corrosion-damaged connections.
KEYWORDS
Corroded cold-formed thin-walled steel connection, Shear test, Shear capacity, Calculation method
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