Study on the calculation model of the whole process mechanical mechanism based on the anchorage length of bolt
Founding on the analysis of shear stress changes on the anchorage bolt,Finding bolt load-deformation char-acteristics is concerned with anchoring surface shear stress created,partial destruction of the sliped,and process of the shear stress disappeared.Based on the stress distribution on the anchoring body model and load-displacement expo-nential decay model which is obtained from the Mindlin solution,Establish the whole process of anchor force calculation model.The model is concerned with bolt the length of anchor,which is able to correspond bolt load-displacement curve and the change of anchoring surface shear stress.The established analysis model is showed that bolt the length of anchor great effect on bolt ductility action and bolt load-deformation different characteristics.Besides,Also propose effective length of anchor calculation method when anchoring surface local shear stress reach the breaking strength.
Rock Mechanicsbolt,the length of anchorresistancedisplacementmechanical model
万方数据
维普
