土工基础

›› 2018, Vol. 32 ›› Issue (4): 406-410.

• 工程实录 • 上一篇    下一篇

格栅状搅拌桩复合地基承载与变形特性综述

杨俊波1，胡胜刚2，方 择2   

  1. （1.中国电力工程顾问集团中南电力设计院有限公司，武汉 430061；2.长江科学院水利部岩土力学与工程重点实验室，武汉 430010）
  • 收稿日期:2018-06-21 修回日期:2018-07-03 出版日期:2018-08-20 发布日期:2018-08-23
  • 作者简介:杨俊波（1976-），高级工程师，研究方向为岩土工程加固处理。
  • 基金资助:

    长江科学院“中央级公益性科研院所基本科研业务费”项目（CKSF2016026/YT）

Bearing Capacity and Deformation Characteristics of Grid Shaped Soil Cement Mixing Column Foundations

YANG Junbo1, HU Shenggang2, FANG Ze2   

  1. (1.Central Southern China Electric Power Design Institute Co. Ltd., China Power Engineering；Consulting Group, Wuhan 430061；
    2.Key Laboratory of Geomechanics and Engineering, Yangtze River Scientific Research Inst., Ministry of Water Resources, Wuhan 430010)
  • Received:2018-06-21 Revised:2018-07-03 Online:2018-08-20 Published:2018-08-23

摘要： 大型高等级建筑物对地基的承载力和变形控制要求较高，传统桩基须穿透地基表层软弱土层，将荷载传递至高承载力的硬土层，处理深度较深，但价格较高，不适于在实际工程应用；格栅状搅拌桩复合地基可通过增大地基浅层土体侧向约束，显著提高地基承载力和刚度，从而大幅减小地基处理深度，具有较高的工程应用价值。对格栅状搅拌桩的力学特征、变形特征、以及承载力与沉降计算方法等方面的研究进行了较为全面的总结，可为相关研究和工程技术人员提供参考。

关键词: 格栅状搅拌桩, 承载特性, 变形特征, 沉降计算

Abstract: The requirements for the bearing capacity and the deformation control of large and highraised buildings are usually higher, The traditional piled foundation usually are required to penetrate the soft soil layer and to transfer the load to hard soil layer with higher bearing capacity. Therefore, the treatment depth is deeper results in a high construction cost.  The grid shaped soilcement mixingcolumn foundation can provide lateral restraints on the shallow soil underneath the foundation and results in an increase in bearing capacity of the composite soils and rigidity of the foundation. The treatment depth can significantly be reduced. This paper presents the stress and deformation properties of the grid shaped soil cement mixing soil columns. The analysis of the bearing capacity and the settlement of the composite ground is also introduced.

Key words: Grid Shaped Soil Cement Mixing Soil Columns, Baring Capacity, Deformation, Settlement Analysis