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International Journal of Frontiers in Engineering Technology, 2023, 5(12); doi: 10.25236/IJFET.2023.051216.

Damage mechanism and evidence of anchor solid under static and dynamic loading conditions

Author(s)

Mengxiang Ma1, Yunhai Cheng

Corresponding Author:
Yunhai Cheng
Affiliation(s)

1Department of Mining Engineering, Anhui University of Science and Technology, Huainan, China

Abstract

Aiming at the impact damage problem of anchorage structure under the condition of superimposed dynamic and static loads, based on the solution of Kelvin elasticity problem, an analytical model of anchor force under the joint action of pre-stretching static load and blasting dynamic load is established, and based on the reflecting and transmitting process of the stress wave between the anchorage and free sections of the anchorage, an analytical model of the force of end-anchored anchorage under the joint action of pre-stretching static load and blasting dynamic load is put forward, and the corresponding damage is given. The analytical model is proposed and the corresponding damage form is given. It is found that due to the different wave impedance of the free section, the anchored section and the roadway surface, the axial stresses superimposed on the anchors at different locations are different. Meanwhile, due to the complex nature of the surrounding rock, the differences in anchor rods and anchor materials, and the construction errors, the damage forms of the anchorage bearing structure are different.

Keywords

dynamic and static loads, anchor solid, Impact dynamic load

Cite This Paper

Mengxiang Ma, Yunhai Cheng. Damage mechanism and evidence of anchor solid under static and dynamic loading conditions. International Journal of Frontiers in Engineering Technology (2023), Vol. 5, Issue 12: 106-110. https://doi.org/10.25236/IJFET.2023.051216.

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