Consolidation mechanism of fully grouted anchor bolts

摘要

Fully grouted anchor bolts have been widely used in slope reclamation and mining reinforcement.However,their consolidation mechanism has not been fully understood still. Problems such as the load-transfercharacter and the side resistance distribution rule also need further study. Taking the anchor bolt,the groutedmaterials,the surrounding rock and their interfaces as the research objects,based on the basic shear-lag modelsand given reasonable assumed conditions,the authors studied the mechanism of the axis force and the sideresistance in the fully grouted bolt system. The results have shown that the resistance mainly exists in the headof the anchor bolt and its exponential distribution along the axes,so it is impossible to improve the capacitybearing of bolt effectively by increasing the length of bolt.