根据某高速公路桥梁工程PHC管桩施工过程中的实测结果,利用各测点产生的超孔压消散曲线,结合孔压计埋设图,分析了超孔隙水压力的大小、分布、变化规律及影响范围,得出以下结论:1)随着入土深度的增大,孔隙水压力均有开始减小然后增大的过程;2)测点距离沉桩越近,孔隙水压力影响越大,且孔隙水压力数值变化越明显;3)位于深层的超孔隙水压力随着有效半径的减小明显增大。提出了减弱超孔隙水压力的措施。 According to the measured results during the construction of a highway bridge PHC pipe pile, the pore pressure dispersion curve produced by each measuring point is used in combination with the buried diagram of the pore pressure gauge to analyze the size, distribution, variation and influence of excess pore water pressure The conclusions are as follows: 1) With the increase of soil depth, the pore water pressure begins to decrease and then increases; 2) The closer the measured point is to the pile sinking, the greater the influence of pore water pressure, The more obvious the change of water pressure value is; 3) The excess pore water pressure in deep layer obviously increases with the decrease of effective radius. Proposed to reduce excess pore water pressure measures.