(上海岩土工程勘察设计研究院有限公司，上海 200002)

［摘要］对现有的抗拔桩设计进行简要评述，对PHC管桩作抗拔桩的桩身结构强度、焊缝强度、端板孔口抗剪强度、钢棒墩头进行验算，并对管桩和承台连接方式进行了探讨，提出了填芯连接方式的计算公式。最后通过现场静载抗拔试验，验证了PHC管桩作为抗拔桩的可行性。所得结论将为PHC管桩作为抗拔桩在工程中的应用提供有益的参考依据。

［关键词］PHC管桩；抗拔；结构强度；焊缝；抗剪强度

Study on prestressed high concrete pile as resistant extraction pile in Shanghai

Chen Daijie, Fan Xiangyang, Xu Feng

Abstract:The actual design of resistant extraction pile was reviewed, and the structural strength of pile, the strength of weld seam, the shear strength of end sheet, the strength of steel bar′s were analyzed. Also the connecting of pile and foundation slab was discussed, then the calculation formula was proposed. The feasibility to use prestressed high concrete pile as resistant extration pile based on the uplift test in-site is verified. The conclusions are useful for the further using of PHC pile as resistant extraction pile in engineering.

Keywords:prestressed high concrete pile; resistant extraction; structural strength; weld; shear strength

作者简介：陈岱杰(1980-)，男，工学硕士。