# The Bearing Characteristics of Sand Anchors under Vibrating Load
## 3 Results and Analysis
### Study on the Bearing Characteristics of Anchor Rods under a Vibration Load
#### 3.2.1 Effect of Water Content on Bearing Capacity of Anchor Rods under Vibrating Load
As seen in Figure 11a, the vibration frequency was first set to 5 Hz when the vibration load was applied at the beginning, and the anchor solid produced a displacement of 0.75 mm at the initial stage of loading, which was small. After  
Figure 11: Load-bearing capacity-displacement curve under vibration loads with different vibration frequencies (F = 30% F1). (a) R = 100 mm, w = 10%, f = 5, 8, 10 Hz; (b) R = 100 mm, w = 12%, f = 5, 8, 10 Hz; (c) R = 100 mm, w = 14%, f = 5, 8, 10 Hz. the application of the vibration load, the anchor solid produced an upward displacement of approximately 1.8 mm, and it did not fail. In the later destructive testing phase, the anchor solid produced a 3 mm displacement, and its remaining bearing capacity was approximately 1.41 kN, which is a 24.6% reduction in bearing capacity. Repeating the above steps and changing the vibration frequency to 8 Hz, the anchor solid produced a small displacement of 0.73 mm during the initial loading phase. After the application of the vibration load, the anchor solid produced an upward displacement of approximately 1.58 mm, and it did not fail. In the later destructive testing phase, the anchor solid produced a displacement of 2.1 mm, and its remaining bearing capacity was approximately 1.6 kN, which is a 14.4% reduction in bearing capacity. Repeating the above steps and changing the vibration frequency to 10 Hz, the anchor solid produced a displacement of 0.72 mm in the initial stage of loading, which was smaller. After the application of vibratory loads, the anchor solid produced an upward displacement of approximately 1.38 mm, and it did not fail. In the later destructive testing phase, the anchor solid produced a displacement of 1.76 mm, and its remaining bearing capacity was approximately 1.8 kN and had a 3.74% reduction in bearing capacity. In the state of 12% moisture content of sand soil, first, loading took place at the rate of 6 mm/min to 65% of the ultimate pullout resistance (F1) under the action of anchor static load, and this load value is approximately 1.11 kN, which is the peak of this vibration load. The valley value is 35% of the ultimate pullout resistance under the action of anchor static load, and this load value is approximately 0.59 kN. The amplitude of the vibration load is 30% F1, and its value is approximately 0.52 kN. The average load is 50% F1, and the number of vibrations is 1000. As seen in Figure 11b, the vibration frequency was first set to 5 Hz when the vibration load was applied at the beginning, and the anchor solid produced a displacement of 0.57 mm at the initial stage of loading, which was small. After the application of the vibration load, the anchor solid produced an upward displacement of approximately 1.7 mm, and it did not fail. In the later destructive testing phase, the anchor solid produced a displacement of 2.85 mm, leaving a bearing capacity of approximately 1.18 kN, which is a 30.9% reduction in bearing capacity. Repeating the above steps and changing the vibration frequency to 8 Hz, the anchor solid produced a displacement of 0.6 mm in the initial stage of loading, which was smaller. After the application of vibratory loads, the anchor solid produced an upward displacement of approximately 1.25 mm, and it did not fail. In the later destructive testing phase, the anchor solid produced a displacement of 2.15 mm, and its remaining bearing capacity was approximately 1.36 kN, which is a 20.5% reduction in bearing capacity. Repeating the above steps and changing the vibration frequency to 10 Hz, the anchor solid produced a displacement of 0.58 mm at the initial stage of loading, which is a small displacement. After applying the vibration load, the anchor solid produced an upward displacement of approximately 1.6 mm, and it did not fail. At a later stage of destructive testing, the anchor solid produced a displacement of 1.96 mm, and its remaining bearing capacity was approximately 1.58 kN, with a 7.6% reduction in bearing capacity.