Tensile stress mobilization along a rockbolt under shear load
Double Shear Tests (DST) were conducted to understand the performance of rockbolts under shear loading with different pretensions.During testing, five pairs of strain gauges were installed along a rockbolt to measure the variation in tensile strain.Two load cells were also used to measure the normal load generated at either end on the protruding rockbolt.The results showed that the normal load measured with load cell is close to the result calculated from the strain gauges data.In the vicinity of the intersection of joint and bolt, the shear load applied on the rockbolt was converted to the resistance of axial elongation and bending, It was also found that the shear performance is dependent on the tensile elongation capacity to some extent.Furthermore, the interaction of rock and rockbolt with varying pretensions created different magnitude of tension and bend.
L.Li P.C.Hagan S.Saydam
School of Mining Engineering, UNSW Australia, Sydney, Australia
国际会议
The 3rd ISRM Young Scholars Symposium on Rock Mechanics(第三届国际岩石力学青年学者论坛)
北京
英文
275-279
2014-11-08（万方平台首次上网日期，不代表论文的发表时间）