土工基础

›› 2011, Vol. 25 ›› Issue (4): 25-29.

• 工程实录 • 上一篇    下一篇

冻胀作用对北方越冬土钉墙稳定性的影响

 陈 默   

  1. （中航勘察设计研究院有限公司，北京 100098）
  • 收稿日期:2010-10-21 出版日期:2011-08-20 发布日期:2011-11-23
  • 作者简介:陈默，男，1977年生，工程师，2000年毕业于吉林大学勘察工程专业，主要从事岩土工程设计和施工工作。

Influences of Frost Heaving on the Stability of Soil Nailing Wall Over Winter in Northern China

CHEN  Mo   

  1. (Aviation Industry Geotechnical Eng. Co., Beijing 100098, China)
  • Received:2010-10-21 Online:2011-08-20 Published:2011-11-23

摘要： 冻胀是越冬季节基坑支护工程的潜在危险，从冻胀对基坑工程的不利影响着手进行分析，并以北京某越冬土钉墙支护工程为例，分析了冻胀力对该类支护形式稳定性的影响，结果表明，由冻胀引起的水平位移主要发生在冻胀土，而弱冻胀土较小；冻胀引起的土钉拉力变化值在冻胀土中较大，而弱冻胀土中值较小。

关键词: 冻胀, 土钉墙, 水平位移, 土钉拉力, 基坑支护

Abstract: The forst heaving process is the potential danger for the foundation support engineering over winter in northern China. Based on the soil nailing wall engineering over winter in Beijing, the influence of frost heave force to its stability was analyzed. Results show that the horizontal displacement of frost heave soil induced by frost heave is more than the one of weak frost heave soil, the change of soil nail's tension induced by frost heave is more than the one of weak frost heave soil.