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An Experiment on Bond-Anchoring Property of Prestressing Spiral Groove Tendon

Journal Applied Mechanics and Materials (Volumes 105 - 107)
Volume Vibration, Structural Engineering and Measurement I
Edited by Paul P. Lin and Chunliang Zhang
Pages 1685-1688
DOI 10.4028/www.scientific.net/AMM.105-107.1685
Citation Meng Chen et al., 2011, Applied Mechanics and Materials, 105-107, 1685
Online since September, 2011
Authors Meng Chen, Pin Wu Guan
Keywords Anchoring Length, Bond-Anchoring, Slip
Abstract

Prestressing spiral groove tendon is a new sort prestressing tendon, its characteristic value of tensile yield strength fyk=1000MPa. Firstly, the yield strength, ultimate tensile strength, elastic modulus and elongation are all tested. According to 68 pullout tests, the bond-anchoring curves and failure modes have been studied, and the effects of concrete strength, diameter, anchoring length, thickness of concrete cover and stirrup ratio have been all analyzed. Finally, the equation for ultimate bond-anchoring strength has been suggested by statistical regression, and the test results are in good agreement with values of the suggested equation.

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