Structural Characteristics of Large-angle Cable-stayed Pile

The large-angle cable-stayed pile support structure can save space outside the pit, has advantages such as convenient construction and low cost, and is suitable for scenarios where the anchoring space outside the pit is limited. To further study its deformation and stress mechanism, typical medium-dense sandy soil was selected for numerical modeling of a single soil layer, and the stress and deformation characteristics of the structure were analyzed by changing the angle of the anchor cable and the excavation depth. The results show that the change of the angle of the anchor cable has a great impact on the stress and deformation of the structure, and simplifying the anchor cable into a horizontal elastic support will produce a large calculation deviation. It is necessary to consider the effect of axial force on the flexural and shear bearing capacity of pile and the vertical bearing capacity of single pile. On this basis, the constraint effect of anchor cable on soil retaining pile is considered as inclined elastic support, and a mechanical calculation model which is more in line with the actual stress state and the plane rod system finite element method were established. It is applied to a practical project and compared with the monitoring data. The results show that: large angle cable-stayed pile has good supporting performance, and the mechanical calculation model proposed can reflect the stress and deformation characteristics of this new structure.