土工基础

›› 2017, Vol. 31 ›› Issue (3): 249-251.

• 工程实录 •    下一篇

挤密桩法在延安湿陷性黄土地区中的效果评价

马海能1，朱凤君2   

  1. （1.中国有色金属工业西安勘察设计研究院，西安 710054；2.咸阳职业技术学院，陕西咸阳 712000）
  • 收稿日期:2016-04-26 修回日期:2016-05-12 出版日期:2017-06-25 发布日期:2017-06-26
  • 作者简介:马海能（1983-），男，工程师，研究方向为岩土工程勘察、施工。 

Effect of Compaction Column in Collapsible Loess Soils in Yan’an

MA Haineng1， ZHU Fengjun2   

  1. (1.Xi’an Exploration Design Research Institute Co. Ltd., China NonFerrous Metal Industry, Xi’an 710054；
    2.Xianyang Vocational Institute, Xianyang 712000)
  • Received:2016-04-26 Revised:2016-05-12 Online:2017-06-25 Published:2017-06-26

摘要： 挤密桩法作为湿陷性黄土地区中的一种常见的地基处理方式，对其地基处理效果进行试验分析有着重要的意义。结合某工程开展试验研究，采用室内试验、载荷试验及面波测试等手段，对比分析地基土处理前后的物理力学性质，评价地基处理效果。通过对比分析表明：地基处理范围内完全消除湿陷性，地基承载力满足设计要求。该试验成果在该地区同类工程有一定的借鉴意义。

关键词: 挤密桩, 湿陷性黄土, 试验, 地基处理

Abstract: The compaction column is a common soil improvement method for the collapsible loess soils and the verification of the soil improvement effect of the compaction columns can improve the understanding of this method. A trail site was selected before the soil improvement project. Laboratory tests, field plate loading tests and the geophysical surface wave methods were used to examine the effect of the trail compaction columns. The soil physical and mechanical properties of before and after the improvement were compared. The results indicate that the collapsibility of the loess soils within the foundation influence zone can be eliminated and the bearing capacity of the composite ground is also satisfactory.

Key words: Compaction Columns, Collapsible Loess Soils, Experiments, Soil Improvements