吉林建筑大学学报

采用ANSYS软件分析新型混凝土扩盘桩（以下简称新型CEP桩）单桩基础抗压承载性能，重点分析承台厚度变化对承载性能的影响。通过对五组不同承台厚度的新型CEP桩和一组无承台新型CEP桩建立模型，比较分析位移云图与节点应力，得出以下结论：有承台新型CEP桩单桩基础的承载力远高于无承台新型CEP桩，承台厚度增加会提高单桩基础承载力；但承台厚度增加有一定限制，否则承载力增长不明显，浪费混凝土。因此，合理选择承台厚度对新型CEP桩基础设计至关重要。本文结论为新型CEP桩的工程设计及推广应用提供了理论基础。

ANSYS software is used to analyse the compressive bearing performance of the new concrete expanded-plate piles(hereinafter referred to as the new CEP pile) monopile foundation, focusing on the influence of the change of bearing platform thickness on the bearing performance. By modeling five groups of new CEP piles with different bearing platform thicknesses and one group of new CEP piles without bearing platform, and comparing and analysing the displacement maps and nodal stresses, the following conclusions are drawn: the bearing capacity of monopile foundation of new CEP piles is much higher than that of CEP piles without bearing platform, and the increase of bearing platform thickness will improve the bearing capacity of monopile foundation; however, there is a certain limitation to the increase of the bearing platform thickness,or else the growth of the bearing capacity will be insignificant and the concrete will be wasted. Therefore,reasonable selection of bearing platform thickness is crucial for the new CEP pile foundation design. The conclusion of this paper provides a theoretical basis for the engineering design and popularisation of new CEP piles.