冻融循环对黄土二次湿陷特性的影响研究

doi:10.7522/j.issn.1000-0240.2013.0045

冰川冻土 ›› 2013, Vol. 35 ›› Issue (2): 376-382.doi: 10.7522/j.issn.1000-0240.2013.0045

冻融循环对黄土二次湿陷特性的影响研究

王泉^1,2, 马巍¹, 张泽¹, 赵淑萍¹, 李国玉¹, 毛云程^1,3

1. 中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室, 甘肃兰州 730000;
2. 中国科学院大学, 北京 100049;
3. 甘肃省交通科学研究院有限公司, 甘肃兰州 730050

收稿日期:2013-01-28 修回日期:2013-03-12 出版日期:2013-04-25 发布日期:2013-05-14
通讯作者: 马巍,E-mail:mawei@lzb.ac.cn E-mail:mawei@lzb.ac.cn
作者简介:王泉(1987-), 男, 辽宁大连人, 2010年毕业于吉林大学, 现为中国科学院寒区旱区环境与工程研究所在读硕士研究生, 主要从事冻融循环与黄土湿陷研究. E-mail: hurryup189@126.com
基金资助:
国家自然科学基金创新群体项目(41121061); 国家重点基础研究发展计划(973计划)项目(2012CB026106); 国家自然科学基金优秀国家重点实验室研究项目(41023003)资助

Research on the Secondary Collapse Properties of Loessunder Freeze-Thaw Cycle

WANG Quan^1,2, MA Wei¹, ZHANG Ze¹, ZHAO Shu-ping¹, LI Guo-yu¹, MAO Yun-cheng^1,3

1. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Gansu Provincial Communications Science Research Institute Co., Ltd, Lanzhou Gansu 730050, China

Received:2013-01-28 Revised:2013-03-12 Online:2013-04-25 Published:2013-05-14

摘要/Abstract

摘要：

在黄土地区公路路基建设中, 通常会采用预湿陷等办法来对湿陷性黄土进行处理以达到工程要求.但是在季节冻土区, 处理过的黄土路基却在运营几年后, 仍发生大量的不均匀沉降、塌陷等病害.为分析冻融循环作用对黄土二次湿陷的影响, 采用室内试验方法, 使大体积黄土样品先完成一次湿陷, 再进行冻融循环和黄土二次湿陷.试验结果表明: 重塑黄土与原状黄土的二次湿陷系数随着冻融循环次数的增加趋向于同一个特定值; 重塑黄土和原状黄土的二次湿陷系数皆大于0.015, 说明二者皆满足湿陷条件, 在冻融条件下具有二次湿陷性.

关键词: 冻融循环, 原状黄土, 二次湿陷, 黄土路基

Abstract:

In the construction of subgrade in loess areas, some methods like pre-collapse are always taken to make the subgrade more stable. However, in seasonal frozen soil areas, there are some loess subgrades having disease, such as vast uneven settlement or collapse, after running a few years. In order to study and analyze the reason how the freeze-thaw cycle influence the secondary collapse of loess, experiments were done in the laboratory. First, loess specimen was collapsed in a big volume, and then the specimen experienced freeze-thaw cycles and finally experienced second collapse. It is found from these experiments that the intact loess and the remolded loess's coefficients of secondary collapse come to a same value gradually with freeze-thaw cycle increasing; both the intact loess and the remolded loess's coefficients of secondary collapsibility are larger than 0.015, which is the standard to identify whether the loess has the ability to collapse, so both the intact loess and the remolded loess have the ability of secondary collapse under freeze-thaw cycle.

Key words: freeze-thaw cycle, intact loess, secondary collapse, loess subgrade

中图分类号:

P642.14

王泉, 马巍, 张泽, 赵淑萍, 李国玉, 毛云程. 冻融循环对黄土二次湿陷特性的影响研究[J]. 冰川冻土, 2013, 35(2): 376-382.

WANG Quan, MA Wei, ZHANG Ze, ZHAO Shu-ping, LI Guo-yu, MAO Yun-cheng. Research on the Secondary Collapse Properties of Loessunder Freeze-Thaw Cycle[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2013, 35(2): 376-382.

参考文献

[1] Feng Lianchang, Zheng Yanwu. Collapsible Loess of China[M]. Beijing: China Railway Publishing House, 1982.

[2] Yang Youhai, Su Zaichao, Xia Qiong. Mechanism and application of short reinforcement under superficial layers of loess embankment slope [J]. China Civil Engineering Journal, 2005, 38(11): 84-88. [杨有海, 苏在朝, 夏琼. 黄土路堤边坡浅层加筋加固机理分析及工程应用[J]. 土木工程学报, 2005, 38(11): 84-88.]

[3] Yao Xiaoliang, Qi Jilin. Artificial neural network forecasting method for thaw-settlement coefficient[J]. Journal of Glaciology and Geocryology, 2011,33(4): 891-896. [姚晓亮, 齐吉琳. 融沉系数的人工神经网络预测方法[J]. 冰川冻土, 2011,33(4): 891-896.]

[4] Zheng Jianfeng, Ma Wei, Zhao Shuping, et al. Study of meso-damage changes of frozen Lanzhou loess under triaxial compression based on CT real-time monitoring [J]. Journal of Glaciology and Geocryology, 2011, 33(4): 839-845. [郑剑锋, 马巍, 赵淑萍, 等. 三轴压缩条件下基于CT实时监测的冻结兰州黄土细观损伤变化研究[J]. 冰川冻土, 2011, 33(4): 839-845.]

[5] Luo Fei, Zhao Shuping, Ma Wei, et al. Characteristics of dynamic strain amplitude of frozen Lanzhou loess under dynamic loading[J]. Journal of Glaciology and Geocryology, 2012, 34(4): 884-890. [罗飞, 赵淑萍, 马巍, 等. 动荷载作用下冻结兰州黄土的动应变幅变化特征研究[J]. 冰川冻土, 2012,34(4): 884-890.]

[6] Sun Jianzhong, Liu Jianmin. On unsaturated collapse, remnant collapse and multiple collapse of the loess[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(3): 365-367. [孙建中, 刘健民. 黄土的未饱和湿陷、剩余湿陷和多次湿陷[J]. 岩土工程学报, 2000, 22(3): 365-367.]

[7] Lu Yudong, Sun Jianzhong. Discussion on multilevel collapsibility of loess[J]. Coal Geology & Exploration, 2005, 33(4): 63-65. [卢玉东, 孙建中. 黄土的多级湿陷性研究[J]. 煤田地质与勘探, 2005, 33(4): 63-65.]

[8] Li Guoyu, Ma Wei, Mu Yanhu, et al. Process and mechanism of impact of freezing and thawing cycle on collapse deformation of compacted loess[J]. China Journal of Highway and Transport, 2011,24(5): 1-5,10. [李国玉, 马巍, 穆彦虎, 等. 冻融循环对压实黄土湿陷变形影响的过程和机制[J]. 中国公路学报, 2011, 24(5): 1-5,10.]

[9] Xu Xiaozu, Wang Jiacheng, Zhang Lixin. Physics of Frozen Soils[M]. Beijing: Science Press, 2001.

[10] Dong Xiaohong, Zhang Aijun, Lian Jiangbo, et al. Study of shear strength deterioration of loess under repeated freezing-thawing cycles[J]. Journal of Glaciology and Geocryology, 2010, 32(4): 767-772. [董晓宏, 张爱军, 连江波, 等. 反复冻融下黄土抗剪强度劣化的试验研究[J]. 冰川冻土, 2010,32(4): 767-772.]

[11] Zhang Shimin, Li Shuangyang. Experimental study of the Tibetan silty clay under freeze-thaw cycles[J]. Journal of Glaciology and Geocryology, 2012, 34(3): 625-631. [张世民, 李双洋. 青藏粉质黏土冻融循环试验研究[J]. 冰川冻土, 2012, 34(3): 625-631.]

[12] Yang Chengsong, He Ping, Cheng Guodong, et al. Freeze-thaw experiment influence on moisture content distribution of soil[J]. Journal of Glaciology and Geocryology(冰川冻土), 2004, 26(Suppl.): 50-55.

[13] Yang Chengsong, He Ping, Cheng Guodong, et al. Testing study on influence of freezing and thawing on dry density and water content of soil[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(Suppl. 2): 2695-2699. [杨成松, 何平, 程国栋, 等. 冻融作用对土体干容重和含水量影响的试验研究[J]. 岩石力学与工程学报, 2003, 22(增2): 2695-2699.]

[14] Fang Lili, Qi Jilin, Ma Wei. Freeze-thaw induced changes in soil structure and its relationship with variations in strength[J]. Journal of Glaciology and Geocryology, 2012, 34(2): 435-440. [方丽莉, 齐吉琳, 马巍. 冻融作用对土结构性的影响及其导致的强度变化[J]. 冰川冻土, 2012, 34(2): 435-440.]

[15] Qi Jilin, Zhang Jianming, Zhu Yuanlin. Influence of freezing-thawing on soil structure and its soil mechanics significance[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(Suppl. 2): 2690-2694. [齐吉琳, 张建明, 朱元林. 冻融作用对土结构性影响的土力学意义[J]. 岩石力学与工程学报, 2003, 22(增2): 2690-2694.]

[16] Ma Wei, Xu Xiaozu, Zhang Lixin. Influence of frost and thaw cycles on shear strength of lime silt[J]. Chinese Journal of Geotechnical Engineering, 1999, 21(2): 158-160. [马巍, 徐敩祖, 张立新. 冻融循环对石灰粉土剪切强度特性的影响[J]. 岩土工程学报, 1999, 21(2): 158-160.]

[17] The Ministry of Construction of the People’s Republic of China. Code for Building Construction on Collapsible Loess Regions[S]. Beijing: China Architecture & Building Press, 2004.

[18] The Ministry of Water Resources of the People’s Republic of China. Standard for Soil Test Method(GB/T 50123-1999)[S]. Beijing: China Planning Press, 1999.

冻融循环对黄土二次湿陷特性的影响研究

Research on the Secondary Collapse Properties of Loessunder Freeze-Thaw Cycle

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