江宁医改中心混凝土桩基分析

Analysis on Concrete Pile Foundation of Jiangning Hospital Care Center

以江宁医改中心一期工程为依托,探讨了桩基础的设计与施工方法,分析了抗拔桩与抗压桩的静载试验。结果表明,本工程的抗拔桩平均回弹率一般大于抗压桩;抗拔桩回弹变形中桩身的弹性恢复只是小部分,桩身质量对抗拔桩的变形有一定影响;同一地段发生同等位移条件下,抗压荷载明显大于抗拔荷载且荷载差异随位移的增加而增加;荷载作用下的基桩变形与检测的间隔时间关系不大。

As project of Jiangning hospitalcare center Ⅰ, design and construction method of pile foundation are investigated, static load experimental results of tension pile and compression pile are analyzed. The results show that, average rebound rate of tension pile in this project is more than compression piles; elastic recovery of tension pile in rebound deformation is a small part, there is the influence of pile quality on deformation of tension pile; under the same area and same condition of displacement, compression load is obviously more than tension load, and with increasing the displacement, the load difference is increased; under the role of load,pile deformation and detected interval have little relationship.