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天然粗粒盐渍土大型路堤模型试验研究

张莎莎, 杨晓华, 张秋美

张莎莎, 杨晓华, 张秋美. 天然粗粒盐渍土大型路堤模型试验研究[J]. 岩土工程学报, 2012, 34(5): 842-847.
引用本文: 张莎莎, 杨晓华, 张秋美. 天然粗粒盐渍土大型路堤模型试验研究[J]. 岩土工程学报, 2012, 34(5): 842-847.
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ZHANG Sha-sha, YANG Xiao-hua, ZHANG Qiu-mei. Large-scale model tests on embankment of crude coarse grained saline soil[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(5): 842-847.
Citation: ZHANG Sha-sha, YANG Xiao-hua, ZHANG Qiu-mei. Large-scale model tests on embankment of crude coarse grained saline soil[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(5): 842-847.
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天然粗粒盐渍土大型路堤模型试验研究  English Version

  • 1.长安大学公路学院，陕西 西安 710064; 2. 长安大学特殊地区公路工程教育部重点试验室，陕西 西安 710064

基金项目: 国家西部交通建设科技项目（200331879750）；中央高校基本科研业务费专项资金资助项目（CHD2011JC41）
详细信息
    作者简介:

    张莎莎 (1982 – ),女，山西运城人，博士，讲师，主要从事特殊土性状及工程应用的科研与教学工作。

  • 中图分类号: TU448;U416

Large-scale model tests on embankment of crude coarse grained saline soil

  • 1. School of Highway, Chang'an University, Xi'an 710064, China; 2. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, China

摘要

    摘要
  • 摘要: 西北地区分布着大量的粗粒盐渍土，研究其作为路堤填料的适用性，可充分利用当地资源和节约公路工程建设费用。为了使试验结果更准确地反映工程实际情况，在对天然粗粒盐渍土进行不同方法的化学成分分析试验、模拟季节交替冻融循环试验、有（无）附加荷载单次降温盐胀试验及大型溶陷试验的基础上，开展了多次冻融循环条件下大型路堤模型试验。结果表明：两种化学成分分析试验—规范法和过 5 mm 筛法分别得到的易溶盐含量相差较大，过 5 mm 筛法能更准确指导实际工程的施工；随着含水率的增加，粗粒盐渍土的盐胀量和溶陷量亦逐渐增大，溶陷累加性较显著； 50 kPa 附加荷载抑制该天然粗粒盐渍土的盐胀量可达 85% 以上；经多次冻融循环后，大型路堤表面的最大盐胀率仅为 0.44% ；该天然粗粒盐渍土可用于上部路堤填料。
    Abstract: In Northwest China, there is great deal of crude coarse grained saline soil. If it can be used as embankment fill, full use of local resources will be made and construction cost of highways saved. In order to make the test results more accurately and to reflect the actual working conditions, based on two different chemical analysis tests, experiments of freeze thaw cycles, salt expansion tests under (no) additional load and large-scale immersed tests, large-scale model tests on embankment under freeze thaw cycles are performed. It is shown that the soluble salt obtained by two different test methods (standard method and screening method of 5 mm) is quite different, and the results from the screening method of 5 mm can better guide the construction. With the increase of moisture content, the values of salt expansion and collapsibility gradually increase, and the cumulative characteristics of collapsibility are obvious. The amount of salt expansion for the saline soil under additional covering load is less than 15%, compared with that under no additional load. After several freeze-thaw cycles, the maximum expansion rate of the large-scale embankment model is only 0.44%. The crude coarse grained saline soil can be used for embankment fill.
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    • 参考文献(9)
  • [1] 吴青柏, 孙 涛, 陶兆祥, 等. 恒温下含硫酸钠盐粗颗粒土盐胀特征及过程研究[J]. 冰川冻土, 2001, 9(3): 238–243. (WU Qing-bai, SUN Tao, TAO Zhao-xiang, et al. Experimental studies on the salt expansion of coarse grain saline soils under constant temperature[J]. Journal of Glaciology and Geocryology, 2001, 9(3): 238–243. (in Chinese))
    [2] 罗炳芳, 潘菊英. 粗粒土易溶盐含盐量测定方法的研究[J].公路, 2005, 11(11): 192–193. (LUO Bing-fang, PAN Qiu-ju. Determination of soluble salt content of coarse-grained soil[J]. Highway, 2005, 11(11): 192–193. (in Chinese))
    [3] 包卫星, 李志农, 罗炳芳. 公路工程粗粒盐渍土易溶盐试验方法研究[J]. 岩土工程学报, 2010, 32(5): 792–797. (BAO Wei-xing, LI Zhi-nong, LUO Bing-fang. Test method for soluble salt in saline soil in highway engineering[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(5): 792–797. (in Chinese))
    [4] 张莎莎, 杨晓华, 谢永利, 等. 路用粗粒盐渍土盐胀特性[J].长安大学学报 (自然科学版), 2009, 29(1): 20–25. (ZHANG Sha-sha, YANG Xiao-hua, XIE Yong-li, et al. Salt-expansion laws of coarse-grained salty soil in road subgrade[J]. Journal of Chang’an University (Natural Science Edition), 2009, 29(1): 20–25. (in Chinese))
    [5] 张莎莎, 谢永利, 杨晓华, 等. 典型天然粗粒盐渍土盐胀微观机制分析[J]. 岩土力学, 2010, 31(1): 123–127. (ZHANG Sha-sha, XIE Yong-li, YANG Xiao-hua, et al. Research on microstructure of crude coarse grain saline soil under freezing and thawing cycles[J]. Rock and Soil Mechanics, 2010, 31(1): 123–127. (in Chinese))
    [6] 张莎莎, 杨晓华, 戴志仁. 天然粗颗粒盐渍土多次冻融循环盐胀试验[J]. 中国公路学报, 2009, 22(4): 28–32. (ZHANG Sha-sha, YANG Xiao-hua, DAI Zhi-ren. Freezing-thawing cycles and salt expansion test of crude coarse grain clay salty soil[J]. China Journal of Highway and Transport, 2009, 22(4): 28–32. (in Chinese))
    [7] JTG E40—2007 公路土工试验规程[S]. 北京: 人民交通出版社, 2007: 67-71, 132-139, 361-398. (JTG E40—2007 The methods of soils for highway engineering[S]. Beijing: China Communications Press, 2007: 67-71, 132-139, 361-398. (in Chinese))
    [8] JTG D30－2004 公路路基设计规范[S]. 北京: 人民交通出版社, 2004: 81–84. (JTG D30－2004 Specifications for design of highway subgrades[S]. Beijing: China Communications Press, 2004: 81–84. (in Chinese))
    [9] 新疆公路学会. 盐渍土地区公路设计与施工指南[M]. 北京:人民交通出版社, 2006: 35–36. (Xinjiang Highway and Transportation Society. Technical guidelines for highway design and construction in the saline soil regions[S]. Beijing: China Communications Press, 2006: 35–36. (in Chinese))
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  • 发布日期:  2012-05-19

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