土工基础

›› 2017, Vol. 31 ›› Issue (5): 543-545.

• 工程实录 • 上一篇    下一篇

山地型软土地层中人工挖孔桩采用微型钢管桩围护结构的应用

雷燚中   

  1. (贵州首钢国际工程技术有限公司，贵州六盘水 553028)
  • 收稿日期:2017-06-23 修回日期:2017-07-14 出版日期:2017-10-20 发布日期:2017-10-29
  • 作者简介:雷燚中（1972-），男，工程师，研究方向为岩土工程勘察。

Small Diameter Steel Tube as Supporting Structure for Manually Excavated Caissons

LEI Yizhong   

  1. (Guizhou Shougang International Engineering Technology Co., Ltd., Liupanshui 553028)
  • Received:2017-06-23 Revised:2017-07-14 Online:2017-10-20 Published:2017-10-29

摘要： 结合工程实例总结了特殊地质条件下，山地型软土地层中采用微型钢管桩围护结构进行人工挖孔桩的施工方案，并对微型钢管桩围护结构的设计、施工顺序及技术要点进行了阐述。实践证明，该微型钢管桩围护结构施工方案缩短了工期，降低了经济投入，提高人工挖孔桩的施工安全度，对特殊地质条件下山地型软土地层的工程处理效果良好，对同类地层条件下的工程项目地基处理提供了参考，值得推广。

关键词: 微型钢管桩, 人工挖孔桩, 垂直度, 无缝钢管, 围护结构

Abstract: The small diameter steel tubes were used as a supporting structure of manually excavated caissons in mountain soft soil strata. The design and construction sequence of the small diameter steel tube supporting structure are introduced. The results indicate that this method can effectively reduce the construction time, and cost while increase the safety.

Key words: Small Diameter Steel Tube Supporting Structure, Manually Excavated Caissons, Plumb, Seamless Steel Tubes, Supporting Structure