The purpose of this paper is to simulate the tension process of pressure-type anchor cables and to explore the damage characteristics and mechanical properties within the anchorage section under different bearing plate sizes and joint angles.
The numerical model of the anchoring section of the pressure-type anchor cable was established using the ABAQUS numerical simulation software. Contact properties between the anchor cable-grout interface and grout-surrounding rock interface were precisely defined. The tensioning process was simulated by applying displacement loads to the anchor cable, followed by computational analysis of the numerical model.
Under load, the grouting body undergoes compressive damage. When the axial force of the anchor cable reaches 227.1 kN, the internal stress distribution of the grout becomes more uniform, limiting the expansion of the damaged zone. When the ratio of the cross-sectional area of the bearing plate to the grouting body increases from 0.179 to 0.318 to 0.498, the peak axial force increases by 33.2 and 22.5%, enhancing cable capacity. Joints significantly influence shear stress distribution, with peak shear stress 60% higher at the upper joint-surrounding rock interface than near the bearing plate.
The research provides an effective numerical approach for stress analysis and design optimization of anchorage systems, though limited by lack of experimental validation and simplified interface contact assumptions, suggesting future experimental verification for improved model accuracy.
The numerical simulation method proposed in this paper effectively addresses the challenge of obtaining internal stress distribution and damage characteristics of pressure-type anchor cables through physical model tests. It provides a more accurate and detailed analysis of the stress distribution and load transfer mechanisms within the anchorage section.
Numerical simulation provides an in-depth exploration of the internal damage characteristics and mechanical properties of the anchored section of pressure-type anchor cables, which can be used as a reference for relevant theoretical studies, scientific experiments and engineering practice.
In this paper, based on the three-dimensional finite element model established by ABAQUS, the contact property problem of the interface between the grouting body and the surrounding rock is solved, which can explore the internal damage characteristics of the pressure-type anchor cable anchored section and its mechanical properties and provide a reference for future numerical simulation studies of tension-dispersed and pressure-dispersed types.
