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Experimental Verification of Standard Recommendations for Estimating the Load-Carrying Capacity of Undercut Anchors in Rock Material
Józef Jonak 1  
,   Robert Karpiński 1  
,   Michał Siegmund 2  
,   Anna Machrowska 1  
,   Dariusz Prostański 2  
 
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1
Department of Machine Design and Mechatronics, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland;
2
KOMAG Institute of Mining Technology, Pszczyńska 37, 44-100 Gliwice, Poland;
CORRESPONDING AUTHOR
Józef Jonak   

Department of Machine Design and Mechatronics, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618 Lublin, Poland;
Publication date: 2021-03-01
 
Adv. Sci. Technol. Res. J. 2021; 15(1):230–244
 
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ABSTRACT
We verify experimentally the recommendations put forward in the International Standards for anchorage in concrete concerning the assessment of the load-carrying capacity of anchors (the pull-out force) embedded in natural rock material. Regarding the predicted extent of surface failure we have shown, in earlier studies, substantial discrepancies between the strength test results for anchorages in the rock mass and the established standard recommendations for anchorages in concrete. As regards the industrial practice and the goals of the reported project, simplified calculation procedures are sought that will facilitate the selection of optimal configurations for the layout of anchor holes, while being computationally effective and applicable in the industry-specific conditions.