A mechanical model for conebolts

Authors

Yuntao Liang, State Key Laboratory of Coal Mine Safety Technology, Fushun Branch of China Coal Research Institute
Manchao He, State Key Laboratory for Geomechanics & Deep Underground Engineering
Chen Cao, State Key Laboratory for Geomechanics & Deep Underground Engineering, University of WollongongFollow
Shuren Wang, Henan Polytechnic UniversityFollow
Ting X. Ren, University of WollongongFollow

RIS ID

110578

Publication Details

Liang, Y., He, M., Cao, C., Wang, S. & Ren, T. (2017). A mechanical model for conebolts. Computers and Geotechnics, 83 142-151.

Abstract

This paper presents a mechanical model for cone bolts by analysing the cone anchorage function as a wedge-style mechanical anchor. Analytical and numerical methods were employed. The failure of a cone bolt commences with a series of partial shear failure through the grout around the cone, followed by bolt slipping as the actual bearing angle of the bolt decreases to a small value. The theoretical prediction is in good agreement with experimental data in the literature. The effect of the cone's geometric face angle was also analysed with respect to the bond strength.