A STUDY OF LIFT-OFF TEST METHOD OF GROUND ANCHORS

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  • グラウンドアンカーのリフトオフ試験方法に関する検討

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 Ground anchors (hereinafter anchors) are important to do the maintenance after construction. Residual tensile strength of anchors are generally confirmed by lift-off test that pulls an anchor using a hydraulic jack. However, the lift-off test has not been established a proper testing method. Therefore, it may not have been proper maintenance from measurement variability.<br> In this paper, we conducted various lift-off test at cut slope of the expressway, and made proposals on proper lift-off test method.

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