预应力管桩沉桩过程中,饱和软粘土地基会产生较大的塑性变形和超静孔隙水压力,影响地基的使用功能。本文以浙江省台州地区一典型软土地基为工程背景,对管桩在饱和粘土中沉桩过程中地基超静孔压进行了原位观测,并与Vesic柱形和球形扩张理论解进行了对比分析,研究了沉桩过程中地基超静孔压的变化规律及影响范围,可为同类工程的设计和施工提供参考。 Prestressed pipe pile sinking process, the saturated soft clay base will have a greater plastic deformation and excess pore water pressure, affecting the use of the foundation function. In this paper, a typical soft soil foundation in Taizhou area of ​​Zhejiang Province is taken as the engineering background. In-situ observation of the excess pore pressure of the pile during pile driving in saturated clay is carried out and compared with the Vesic cylindrical and spherical expansion theoretical solution Analysis and study of the law of excess pore water pressure change and its influence range during pile driving can provide reference for the design and construction of similar projects.