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普通抗拔桩在抗拔荷载作用下,桩身处于拉力状态很容易产生裂缝,随后桩身钢筋锈蚀而遭到破坏。预应力抗拔灌注桩是集合建筑桩基与预应力混凝土结构的新型基础,有效的改善了普通抗拔桩的缺点。文章利用ANSYS有限元分析软件,进行数值模拟及分析,主要分析了预应力抗拔单桩与普通抗拔单桩轴力区别,得出了预应力抗拔灌注桩可以推迟裂纹开展或减小裂缝宽度。为这种新型桩基的推广提供了更多的理论指导。
Ordinary uplift pile in the role of anti-pull load, the pile is prone to tension in the tension state, followed by corrosion of the pile body was damaged. Prestressed anti-pull-injection pile is a new foundation for the construction of pile foundation and prestressed concrete structure, which effectively improves the shortcomings of ordinary pile. In this paper, ANSYS finite element analysis software is used to carry out numerical simulation and analysis. The main difference between the prestressed anti-pull single pile and ordinary anti-pull single pile is analyzed. It is concluded that the prestressed anti-pull grouting pile can delay the crack initiation or reduce the crack width. For the promotion of this new type of pile foundation to provide more theoretical guidance.