根据工程地层分布特征不同,PHC管桩沉桩锤击数偏高、贯入困难时,往往会采取一些辅助沉桩措施,遇到沉桩问题不同,所需采取的措施也不一样.通过在一个工程中多种辅助沉桩措施的成功应用,积累了不少经验,总结出管桩的主要辅助沉桩措施及工艺,供同行相互借鉴、交流,共同提高对PHC管桩的施工认识水平. According to the different distribution characteristics of engineering strata, PHC pile pile hammer pile number is too high, penetrate difficult, often take some auxiliary pile driving measures, encountered pile driving problem, the required measures are not the same. The successful application of a variety of auxiliary pile driving measures in a project has accumulated a lot of experience and summed up the main pile driving auxiliary pile driving measures and technology for mutual reference and exchange among peers to jointly improve the understanding of the construction of PHC pile.