(北京中外建建筑设计有限公司杭州分公司  310014)
【提要】  结合工程实例，着重介绍了预应力混凝土管桩(PC桩)作为抗拔桩的设计要点、计算方法及相应的构造措施。对桩的承载力计算，桩身抗拉强度、接桩焊缝强度、管桩与承台的连接强度的验算方法等提出了一些设计建议。对计算结果与试验数据进行了比较，二者吻合较好，说明设计安全可靠、经济合理。
【关键词】  先张法  PC桩  抗拔桩  静载试验
Design of Pretensioned Prestressed Concrete Pipe Pile Used as Antifloating Pile/Yu Linjun (Hangzhou Branch,Beijing CCI Architectural Design Co., Ltd., Hangzhou 310014, China)
Abstract:Prestressed concrete pipe pile (PC pile) is widely applied in civil engineering projects.It takes full advantages of PC pile excellences when it is used as antifloating pile. Based on practical projects,the design details, calculation methods and structure formations of  PC pile are introduced. The calculation methods of pile foundation's bearing capacity are analyzed, and the design suggestions are proposed. The calculation data and the experimental data are consistent. The results show that the design method is rational and economical.
Keywords:pretensioned; prestressed concrete pipe pile(PC pile); antifloating pile; static load experiment