Stress analysis and calculation of the inner anchor structure of pressure-type anchor

The pressure-type anchor transfers the load to the grouting body via the inner anchor structure at its bottom when bearing the uplift loads. In order to design the inner anchor structure reasonably, the elastic thin plate theory is used to analyze the inner anchor structure under uniformly distributed loads. Based on material properties, the calculation method and the recommended values for the size parameters of the inner anchor structure are given. A finite element model of the inner anchor structure is established with which the rationality of the proposed method and the recommended parametric values are verified by analyzing the stress situation of the internal anchor structure under ultimate load.