Theoretical Analysis And Field Test Study On Pullout Resistance Of Anti-Floating Anchor

  • Guanglin Ding, Bin Huang


The anti-floating anchor has a good engineering application effect against the groundwater buoyancy, and its pullout force has a direct relationship with the cross-sectional dimension. In order to study the relationship between the anti-floating anchor and the pullout resistance, the mudstone of the Cretaceous Guankou Formation, which is widely distributed in the western Sichuan Basin, is taken as the research background. The theoretical calculation method is adopted to determine the most economical and reasonable section size and pass the engineering. Field test for verification. The results show that there is an optimal numerical relationship between the diameter of the anti-floating anchor and the anchor length. For anchors with the same diameter, when the anchor length is less than the optimal length, increasing the anchor length can significantly improve the bolt's resistance to pullout; After the optimal length is exceeded, the pullout resistance of the anchor can be increased to a small extent, and gradually becomes stable as the length increases.