中文摘要：

静钻根植竹节桩是一种由预制桩和水泥土组合而成的组合桩基，通过将预制桩和水泥土的复合弹性模量作为其桩身弹性模量，同时考虑桩身弹性模量沿桩身改变以及桩端水泥土扩大头的作用，采用理想弹塑性荷载传递函数提出了一种在均匀地基中静钻根植竹节桩单桩沉降计算方法。在此基础上，提出了静钻根植竹节桩在层状地基中荷载-位移曲线的递推计算方法。用所提出的计算方法对实际工程中的静钻根植竹节桩试桩的荷载一位移曲线进行计算，并与实测曲线进行比较，验证了所提计算方法的可靠性。选取土体基于预制桩的桩侧摩阻力值作为静钻根植竹节桩的侧摩阻力，计算所得极限承载力与实测极限承载力接近，说明静钻根植竹节桩桩-土接触面摩擦性质与预制桩桩-土接触面摩擦性质相似，且优于钻孔灌注桩桩-土界面摩擦性质。

英文摘要：

The pre-bored grouting planted nodular pile is a type of composite pile foundations which consist of a precast pile and the cemented soil surrounding the pile. A simplified approach to calculating the settlement of a single pre-bored grouting planted nodular （PGPN） pile in homogeneous soil is proposed based on the ideal elastoplastic model; and the composite modulus of the PGPN pile is adopted in the calculation process. In addition, the varying modulus along the pile shaft and the function of the enlarged pile base are also considered in the calculation process. The settlement calculation approach of the PGPN pile in layered soils is then proposed based on the calculation approach in homogeneous soil. The proposed calculation approach is validated by comparing the calculated load-displacement curves of the test piles to the measured load-displacement curves. The skin friction of the PGPN pile is close to the skin friction of the precast pile foundation, demonstrating that the frictional capacity of the cemented soil-soil interface of PGPN pile is better than the frictional capacity of the pile-soil interface of the bored pile.