## 4 Simulation of Combined Components of Anchor Bolt and Anchor Cable Support
### Simulation Results and Analysis  
(1) Deformation analysis of M5 steel strip structure under load  
Figure 4 shows the deformation diagram of M5 steel strip under load. The thickness of M5 steel strip is 5 mm, the width is 173 mm, the material of the steel strip is set as Q345 structural steel, the elastic modulus of the material is set as 200 GPa, the yield strength is set as 350 MPa, the ultimate tensile strength is 550 MPa, and the Poisson's ratio is 0.3. Figure 3: Model of supporting component. In M-shaped steel strip support system, there is a great difference between longitudinal wire deformation and transverse wire deformation. Compared with the longitudinal wire, the arch width of the deformation curve of the transverse wire is narrower and the arch curve is more convex. As a result, it can be concluded that with the addition of bolt support composite components, the deformation of steel mesh shows asymmetry in longitudinal and transverse direction, and the restraint effect on the deformation of transverse mesh wire is obviously higher than that of longitudinal mesh wire. Compared with the reinforcement joint, the asymmetric characteristic of M-shaped steel belt is more obvious. The displacement cloud diagram of M-shaped steel strip under vertical load shows that there is a large deformation in the middle of the span, which gradually decreases during the diffusion process from the middle of the span to both sides, and there is basically no displacement deformation at the long hole due to the constraint of the anchor, and with the gradual increase in the thickness of the steel strip, the deformation area decreases gradually. Under the action of fixed load, the stress value of M-shaped steel strip is higher in the installation position of anchor tray and the loading position in the middle of span, in which the stress concentration in the position of pallet makes it easier for the steel strip to tear and break down there. The stress value of the loading part in the middle of the span is higher, indicating that the vertical displacement of the steel strip is mainly caused by the plastic deformation in the middle of the span. (2) Deformation analysis of reinforced ladder beam under load  
Figure 5 shows the deformation diagram of the reinforced ladder beam under load. The diameters of the reinforced ladder beam are, respectively, 12 mm and 14 mm. In the steel ladder beam combination system, the arch width of the longitudinal wire deformation curve is narrower than that of the transverse wire deformation curve. In the reinforced ladder beam support system, the longitudinal mesh of measuring point No. 2 has a displacement increase of 18 mm compared with measuring point No. 1, the displacement of measuring point No. 3 increased by 18 mm compared with measuring point No. 2, while the transverse mesh wire corresponding to the measurement point displacement increase is 15 mm and 14 mm, the displacement increase compared to the longitudinal mesh wire is reduced by 3 mm and 4 mm, respectively. When the tension of the steel ladder beam on the fixed position of the anchor is greater than the maximum static friction, the steel ladder beam gradually produces the phenomenon of horizontal slip in the lower part of the pallet, the rising speed of the load curve is slow, and the initial support stiffness is low. When the lateral transverse bar of the steel ladder beam is in direct contact with the anchor, and there is no slip space, the model of the steel ladder beam under load becomes a three-point bending model with both sides fixed and loaded in the middle of the span. In this stage, the rising speed of the load-displacement curve is constant, the double longitudinal bars of the reinforced ladder beam are stretched at the same time under the vertical load, and the components produce a lot of elastic-plastic deformation.