Law of Mechanical Properties of Full-Length Bonded Prestressed Bolts Influenced by Design Parameters

Design parameters such as initial bonding section, prestress, and stiffness have a significant impact on the mechanical properties of full-length bonded prestressed bolt. In order to understand influence above three axial force shear stress anchor bolts under condition rock separation, theoretical numerical models were established, sensitivity different was analyzed based grey correlation method. Results indicate that had greatest bolt largely determined peak force, interfacial stress, number sliding elements. Moreover, prestress distribution in while length section elements after sliding. The method results show degrees 0.8932, 0.9023, 0.9775, respectively.