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Presentation
Analytical derivations of bolt profile shear strength
Faculty of Engineering - Papers (Archive)
  • Chen Cao, University of Wollongong
  • Jan Nemcik, University of Wollongong
  • Naj Aziz, University of Wollongong
RIS ID
51490
Publication Date
1-1-2012
Publication Details

Cao, C., Nemcik, J. Aziz, N. (2012). Analytical derivations of bolt profile shear strength. In Q. Qian Y. Zhou (Eds.), 12th ISRM International Congress on Rock Mechanics-Harmonising Rock Engineering (pp. 1473-1476). London: Taylor and Francis Group.

Abstract

This paper presents current developments in theoretical calculations of stress distribution within the resin encapsulating roof bolts in underground mines. Monitoring of steel bolt performance indicate that amongst many parameters bolt profile plays an important role in load transfer between the bolt and the surrounding strata.To optimise the bolt profile geometry a better understanding of the failure mechanisms that occur within the resin during the bolt loading must be achieved. The short encapsulation pull out tests of roof bolts with various surface profile geometry indicate a significant variation in peak bolt performance. The analytical calculations supported by the numerical modelling are used here to predict a probable mode of resin failure while the laboratory and the in situ short encapsulation pull out tests enable direct comparison to the theoretical investigations. The aim of the theoretical predictions and experiments is to research the best profile geometries to reach the optimum load transfer between the bolt and the surrounding strata.

Link to publisher version (URL)
Taylor & Francis
Disciplines
Citation Information
Chen Cao, Jan Nemcik and Naj Aziz. "Analytical derivations of bolt profile shear strength" (2012) p. 1473 - 1476
Available at: http://works.bepress.com/chen_cao/1/