土工基础

›› 2016, Vol. 30 ›› Issue (6): 730-732.

• 工程实录 • 上一篇    下一篇

冻融循环作用对粉质粘土粘聚力影响的试验研究

张  祥，赵  群，王  慧，李晓泉   

  1. （新疆大学 建筑工程学院，乌鲁木齐 830047）
  • 收稿日期:2015-12-18 修回日期:2016-01-18 出版日期:2016-12-20 发布日期:2016-12-22
  • 作者简介:张 祥（1993-），男，本科生，研究方向为道路桥梁。

Influence of Freeze-Thaw Cycles on the Cohesion of a Silty Clay

ZHANG Xiang, ZHAO Qun, WANG Hui, LI Xiaoquan   

  1. (College of Civil Engineering and Architecture, Xinjiang University, Urumqi, 830047)
  • Received:2015-12-18 Revised:2016-01-18 Online:2016-12-20 Published:2016-12-22

摘要： 根据试验结果，讨论了冻融循环对粉质粘土粘聚力的影响，试验发现，反复冻结和融化强烈影响着粉质粘土的粘聚力。一次冻融循环后，对于压实度90%，含水率9%的土样，粘聚力下降较明显。随着冻融循环次数的增加，粉质粘土的粘聚力逐渐衰减，而且衰减幅度不断减小。经历10次冻融循环后，粘聚力变化逐渐趋于稳定。

关键词: 冻融循环, 粉质粘土, 粘聚力

Abstract: The effect of the freeze and thaw cycles on the cohesion of a silty clay is studied throughout the triaxial shear tests. The test results indicate that the freezethaw cycles have strong influences on the cohesion of the silty clay tested. For samples that have a moisture content of 9% and degree of compaction of 90%, the cohesion reduction has the largest under the first cycles. With the increase of freezethaw cycles, the cohesion reduction magnitude is gradually reduced and the cohesion tends to be stable after 10 freezethaw cycles.

Key words: Freeze-Thaw Cycles, Silty Clay, Soil Cohesion