Evaluation and Analysis of the Effect of Anti-slide Piles Around Pile Foundations of Super Large and Large Span Projects

In this study, the three-dimensional finite element numerical analysis was carried out on the anti-sliding characteristics of cement mixing piles around the foundation of the north collapse tower, and the influence of the length and number of rows of anti-slide piles around the pile foundation on the deformation of the pile foundation was systematically studied. When the anti-slide pile length increases from 0 m to 20 m, the pile foundation deformation decreases with the increase of the anti-slide pile length, but the decrease rate is less than 5%. When the length of the anti-slide piles is 10 m and 20 m, after the anti-slide piles on both sides of the large-span foundation increase from 3 rows to 5 rows, the horizontal and vertical deformation of the pile foundation decreases, but the deformation of the pile foundation decreases. Less than 2%. By installing tie beams, the four pile groups of the large-span foundation form an integral structure. The overall horizontal resistance is already strong, but the horizontal resistance provided by cement mixing piles is limited.