Corrosion-Induced Mechanical Degradation of High-Strength Bolted Steel Connection
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 8
Abstract
Effect of corrosion on the mechanical degradation of high-strength bolted steel connection is experimentally investigated in this study. Eleven high-strength bolt joints were fabricated and nine of them were subjected to accelerated corrosion tests to different levels of mass loss. After corrosion, tensile tests were conducted on these bolted connections, and a procedure was proposed to determine the slip coefficient and the clamping force of corroded specimens. Finite-element (FE) analysis was also conducted. Tensile test results demonstrated a five-stage load–displacement curve, and all the specimens fractured at the tensile plate across the bolt hole. Corrosion reduces the clamping force, slip coefficient, initial slip load (or friction shear strength), full slip load, yield load, ultimate load, and ductility, all of which are closely related to the corrosion loss of the entire specimen. FE analysis showed comparable characteristic loads with these from tensile tests.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request (tensile test results and FE analysis).
Acknowledgments
This study was financially supported by the National Natural Science Foundation of China under award No. 51878119, and by the Fundamental Research Funds for the Central Universities of China No. DUT17RC(3)076.
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 8 • August 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: Jun 7, 2019
Accepted: Jan 22, 2020
Published online: May 25, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 25, 2020
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