[1]陈军浩,张世银.不同外边界条件下冻结黏土冻胀力试验研究[J].福建理工大学学报,2015,13(04):313-316.[doi:10.3969/j.issn.1672-4348.2015.04.002]
　Chen Junhao,Zhang Shiyin.Frozen clay frost force test under different boundary conditions[J].Journal of Fujian University of Technology;,2015,13(04):313-316.[doi:10.3969/j.issn.1672-4348.2015.04.002]
点击复制

不同外边界条件下冻结黏土冻胀力试验研究()
分享到：

《福建理工大学学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第13卷
期数:
2015年04期
页码:
313-316
栏目:
出版日期:
2015-08-25

文章信息/Info

Title:
Frozen clay frost force test under different boundary conditions
作者:
陈军浩; 张世银
福建省土木工程新技术与信息化重点实验室
Author(s):
Chen Junhao;  Zhang Shiyin
Fujian Key Laboratory of Advanced Technology and Informationization in Civil Engineering
关键词:
冻土;  胀力;  冻胀量;  冻结模式;  冻胀空间
Keywords:
frozen clay;  frost force;  frost heave;  freezing mode;  frost heave space
分类号:
TD265
DOI:
10.3969/j.issn.1672-4348.2015.04.002
文献标志码:
A
摘要:
在自行研制的一套温度、压力、位移、水分均可控的人工冻土多功能冻胀试验系统上，开展了不同外载荷，单、双向冻结模式，预留一定冻胀量等不同外边界条件下黏土冻胀力试验。得出外荷载对冻胀力发展有明显抑制作用，冻胀力变化曲线由上凸型逐渐向下凹型过渡；冻结模式对冻胀力影响很大，双向冻结模式条件下使冻胀力增长明显，但增幅随冷源温度降低呈二次曲线衰减；同一试样的冻胀力与冻胀量可用二次抛物线来拟合。试验获得了更接近工程现场实际冻结工况下黏土冻胀特性，为多排管冻结设计提供参考。
Abstract:
An artificial multifunctional frost heave test system was developed, which integrates the computer control of temperature, pressure, displacement and moisture. The heave force test of clay was conducted under various external loads, in uni-direction or two sideway freeze mode and reserving a certain amount of heaving space. The external load has obvious inhibition on frost force development, with the frost force curve changing from upper convex form to lower concave form. The freezing mode has great impact on frost force, with the frost heave force increasing significantly under the two-sideway freezing model, but the increase rate attenuated by quadratic curve with the lowering of the cold source temperature. The frost heave force and frost heave of the same sample can be fitted by quadratic parabola. Clay heave characteristics close to the actual freezing conditions of construction projects were obtained, which may contribute to multi-tube freezing design.

参考文献/References:

[1] 徐学祖,王家澄,张立新.冻土物理学[M].北京:科学出版社,2001.
[2] 陈湘生.地层冻结工法理论研究与实践[M].北京：煤炭工业出版社,2007.
[3] 董长江,管枫年.土的冻胀与建筑物冻害防治[M].北京:水利电力出版社,1985.
[4] 徐学祖.土体冻胀和盐胀机理[M].北京:科学出版社,1995.
[5] 程国栋.冻土力学与工程的国际研究新进展[J].地球科学进展,2010,25(3):293-299.
[6] 唐永志,荣传新.淮南矿区复杂地层大型矿井建设关键技术[J].煤炭科学技术,2010,38(4):40-44.
[7] 金川.淮南矿区冻结法凿井的几个关键技术问题[J].建井技术,2006,27(6):26-29.
[8] Everest D H. The thermodynamics of frost damage to porous solids[J].Trans Faraday Soc,1961,57:1541-1551.
[9] Harlan R L. Analysis of coupled heatfluid transport in partially frozen soil[J].Water Resource Research,1973,9(5):1314-1323.
[10] 张婷.人工冻土冻胀、融沉特性试验研究[D].南京：南京林业大学,2004.
[11] 蔡瑛.深土冻融特性试验及工程应用研究[D].合肥：安徽理工大学,2007.
[12] 唐益群,洪军,杨坪.人工冻结作用下淤泥质黏土冻胀特性试验研究[J].岩土工程学报,2009,31(5):772-776.
[13] 于琳琳,徐学燕.人工侧向冻结条件下土的冻结试验[J].岩土力学,2009,30(1):231－235.
[14] 李岩,刘波,张建新.竖向直排冻结条件水平冻胀力试验研究[J].岩土力学,2014,35(11):2299－2306.
[15] 陈军浩.多圈管冻结模型试验及人工冻土冻胀规律研究[D].合肥：安徽理工大学,2013.

更新日期/Last Update: 2015-08-25