ANALYSIS OF THE NEW PRESTRESSED ANCHORING CABLE BASED ON THE INTERFACE ELEMENT METHOD

The improved prestressed anchoring cable is proposed because the cement mortar in front of the bearing plate of traditional prestressed anchor is apt to be destroyed which leads to the instability of the structure. Focusing on the new type prestressed anchoring cable, a refined model is established in this paper using the interface stress element method in discontinuous mechanics. The characteristics of cement mortar, rock mass and the interfaces between different media are considered. The model can also simulate the non-linear behaviors of various materials. Through the numerical analysis of representative problems, the stresses of different media of the prestressed anchoring cable in various cases are obtained. Evaluation has been made on the reinforcement of the new type of prestressed anchoring cable, which leads to some valuable conclusions. The research results show that the method proposed in the paper can well reflect the possible discontinuous deformation of various materials and is an effective method for reinforcing analysis of prestressed anchoring cable.