熊海丰¹，裘  涛²，周晓悦¹
(1 浙江工业大学建筑规划设计研究院，杭州310014; 2 浙江大学建筑设计研究院，杭州310027)

[摘要] 针对某高层建筑项目在预应力管桩施工中出现大量浮桩的现象，分析了浮桩的上浮规律和影响因素，并总结了浮桩的处理原则。通过对浮桩进行注浆加固及静载荷试验，结果表明：桩端后注浆法是一种处理管桩浮桩的有效工程措施。
[关键词] 软土地基；管桩；浮桩；注浆加固

Study on the reinforcement method of prestressed pipe pile floating in deep and thick soft soil foundation
Xiong Haifeng¹, Qiu Tao², Zhou Xiaoyue¹
(1 The Architectural and Planning Design and Research Institute ofZhejiang University of Technology, Hangzhou 310014, China; 2 Architectural Design&Research Institute, Zhejiang University, Hangzhou 310027, China)

Abstract: Aimed at the phenomena of prestressed pipe piles floating in construction of a high-rise building, the regular pattern and influence factors ofpiles floating have been studied. And some principles of the treatment have been summed up. The test of grouting reinforcement and static loading of floating pipe piles were conducted. The results indicate that pile end post-grouting technique is an effective engineermg measure to treat pipe pile floating.
Keywords: soft soil foundation; pipe pile; floating pile; grouting reinforcement