土工基础

›› 2012, Vol. 26 ›› Issue (6): 101-105.

• 工程实录 • 上一篇    下一篇

CFG桩和砂石桩加固吹填河漫滩地基的试验研究

彭典华1，白秀琴2，黄 涛1，王存娟3   

  1. (1.中冶集团武汉勘察研究院有限公司，武汉 430080；2.中国石化武汉分公司，武汉 430082；3.广西建设职业技术学院，南宁 530003)
  • 收稿日期:2012-11-05 出版日期:2012-12-20 发布日期:2012-12-25
  • 作者简介:彭典华(1980-)，男，硕士，工程师，注册土木工程师（岩土），研究方向为岩土工程设计、勘察和施工等。

Comparative Studies of Soft Floodplain Soils Improved by CFG and Gravel Columns

PENG Dianhua1, Bai Xiuqin2, HUANG Tao1, Wang Cunjuan3   

  1. （1.Wuhan SurveyingGeotechnical Research Institute Co., Ltd. of MCC, Wuhan 430080；2.China Petrochemical Corporation Wuhan Branch, Wuhan 430082；3.Guangxi Polytechnic of Construction, Nanning  530003）
  • Received:2012-11-05 Online:2012-12-20 Published:2012-12-25

摘要： 文章结合河漫滩地质特点、CFG桩和砂石桩加固机理，试验研究了CFG桩和砂石桩在处理河漫滩吹填地基时桩间土承载力、单桩竖向承载力、单桩复合地基承载力，分析了两类桩的差异，研究了两类桩组合成二元复合地基的承载力，并对原设计提出了优化建议，对类似工程具有很好的借鉴价值。

关键词: 河漫滩, 低强度桩, 砂石桩, 吹填地基, 静力触探试验, 静载荷试验

Abstract: Combined with the geological characteristics of soft soils in the flood plain formations, the difference in the strength mechanism of using CementFly ash and Gravel (CFG) column and sandgravel column are discussed in this paper. The comparisons are made among the bearing capacity of the soils surrounding the columns, axial capacity of the single column as well as the composite capacity of columns. The bearing capacity of the soilcolumn composite ground is optimized throughout this research.

Key words: Flood Plains, Low Strength Columns, Sandgravel Columns, blowfill foundation, Cone Penetration Testing, Static Pile Load Test