土工基础

›› 2014, Vol. 28 ›› Issue (4): 11-12.

• 工程实录 • 上一篇    下一篇

某基坑工程支护桩成桩缺陷及处理措施

胡建伟，邓少林，邓学灯   

  1. （中冶集团武汉勘察研究院有限公司，武汉 430080）
  • 收稿日期:2013-05-31 出版日期:2014-06-20 发布日期:2014-08-20
  • 作者简介:胡建伟（1988-），男，助工，硕士，武汉大学岩土工程专业毕业，研究方向为岩土工程设计、施工及地质灾害治理。

Cast-In-Place Pile Defects and Mitigations in a Deep Excavation Supporting System

HU Jianwei, DENG Shaolin, DENG Xuedeng   

  1. （Wuhan SurveyingGeotechnical Research Institute Co., Ltd. of MCC, Wuhan，430080）
  • Received:2013-05-31 Online:2014-06-20 Published:2014-08-20

摘要： 通过介绍超流态长螺旋钻孔灌注桩在软弱土层基坑支护工程中的应用，提出了完整的处理思路与处理方案。通过加大桩距、改进施工工艺，并经过桩低应变无损检测，验证了其应用的的可行性，表明其成桩是可靠和可行的，可为类似地层条件下的工程设计与施工提供参考依据。

关键词: 长螺旋钻孔灌注桩, 软弱土层, 成桩缺陷, 低应变检测

Abstract: The long flight auger with super flow concreting method was used in the installation of the supporting system of a deep excavation in soft soils. The defects of the castinpace piles and their mitigations are also presented. Increasing the soldier pile spacing, improving the cast in place pile installation procedure as well as the pile integrity testing are the major components of a successful long flight auger with super flow concreting method application in the soft soils.

Key words: Long bored piles, Soft soil, Defects of pile, Low strain dynamic testing