ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The latest experimental study on steel reinforced high strength and high performanceconcrete (SRHSHPC) specimens shows that there exists interfacial bond softening phenomenonbetween embedded steel and high strength and high performance concrete (HSHPC), and it makes theshear transfer capacity between shaped steel and HSHPC be progressively reduced. To predictfailure load in design, a theoretical model for interfacial bond softening behavior is required. Asinterfacial bond softening behavior is a nonlinear process involving material properties, it can beanalyzed once the relation of interfacial bond stress (τ ) and slippage ( s ) is known. In this paper, themechanism of interfacial bond-slip is studied, thus a simplified τ − s relation including ascending anddescending parts is proposed and employed to analyze the interfacial nonlinear bond-slip process.Based on the interfacial equilibrium between steel and HSHPC as well as the τ − s relation, the basicgoverning equations in both softened region and elastic region are established and solved for steelstrain or stress. At last, the application of the model is verified through comparison with experimentalresults. The calculating results of the model are found to be in good agreement with experimentalresults, showing that the model can describe the bond-slip process in real material systems
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.845.pdf
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