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铁路路基下膨胀土地基浸水响应现场试验

陈伟志, 蒋关鲁, 赵慧爽, 袁泽华, 王智猛, 李安洪

陈伟志, 蒋关鲁, 赵慧爽, 袁泽华, 王智猛, 李安洪. 铁路路基下膨胀土地基浸水响应现场试验[J]. 岩土工程学报, 2014, 36(8): 1507-1514. DOI: 10.11779/CJGE201408017
引用本文: 陈伟志, 蒋关鲁, 赵慧爽, 袁泽华, 王智猛, 李安洪. 铁路路基下膨胀土地基浸水响应现场试验[J]. 岩土工程学报, 2014, 36(8): 1507-1514. DOI: 10.11779/CJGE201408017
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CHEN Wei-zhi, JIANG Guan-lu, ZHAO Hui-shuang, YUAN Ze-hua, WANG Zhi-meng, LI An-hong. Field tests on soaking response of expansive soil foundation under railway subgrade[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(8): 1507-1514. DOI: 10.11779/CJGE201408017
Citation: CHEN Wei-zhi, JIANG Guan-lu, ZHAO Hui-shuang, YUAN Ze-hua, WANG Zhi-meng, LI An-hong. Field tests on soaking response of expansive soil foundation under railway subgrade[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(8): 1507-1514. DOI: 10.11779/CJGE201408017
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铁路路基下膨胀土地基浸水响应现场试验  English Version

  • 1. 西南交通大学土木工程学院,四川 成都 610031; 2. 西南交通大学道路工程四川省重点实验室,四川 成都 610031; 3. 中铁二院工程集团有限责任公司,四川 成都 610031

基金项目: 铁道部科技研究开发计划项目（2010G003-F）
详细信息
    作者简介:

    陈伟志(1985- ),男,福建永春人,博士研究生,主要从事高速铁路路基及地基处理设计等方面研究工作。E-mail: chenweizhi55@163.com。

  • 中图分类号: TU443

Field tests on soaking response of expansive soil foundation under railway subgrade

  • 1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. Key Laboratory of Highway Engineering of Sichuan Province, Southwest Jiaotong University, Chengdu 610031, China; 3. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China

摘要

    摘要
  • 摘要: 在工程建设中,膨胀土大都属于非饱和土范畴。对高速铁路无砟轨道路基而言,膨胀土的胀缩变形可能加剧线路的不平顺性,影响高速铁路的正常运营。为研究铁路路基荷载下非饱和膨胀土土层在人工浸水后的变形特征,结合云桂铁路建设,设计并开展了铁路原型路基荷载下膨胀土地基现场浸水试验,并监测了从路基填筑开始到人工浸水结束时膨胀土地基与路基本体变形及浅层土水分的时程变化。试验结果揭示了膨胀土地基浸水饱和后的极限相对膨胀量、膨胀变形沿路基横向与地基深度的分布规律以及地基表面膨胀变形沿路基本体的衰减特征。基于试验成果,初步提出了以路基表面膨胀变形为0作为控制标准确定路基临界填高的设计思路。现场试验的设计原则与实施方法也可为今后研究铁路路基下膨胀土地基胀缩特性提供参考。
    Abstract: The expansive soil is classified as the unsaturated one in engineering construction. The swelling and shrinkage deformation of the expansive soil may cause intensified line harshness for the ballastless track on high-speed railway subgrade, affecting the normal operation of high-speed railway. To study the deformation characteristics of unsaturated expansive soil layer under lining of railway subgrade after artificial soaking, considering the construction of Kunming-Nanning Railway, field soaking tests on expansive soil foundation under railway subgrade are designed and carried out. Meanwhile, the time histories of deformations of expansive soil foundation and subgrade body, and moisture migration of shallow clay are measured from the beginning of subgrade filling to the end of artificial soaking. The test results reveal the ultimate deformation of relative expansion of expansive soil foundation after being soaked and saturated, distribution of swelling deformation along the cross section of subgrade and the depth of foundation as well as decay characteristics of swelling deformation of ground surface along the subgrade body. Based on the test results, the objective of the subgrade surface without swelling deformation control, which is used to determine the critical height of subgrade, is initially derived. The design principles and implementation methods of field tests can be used as a reference method for studying the swelling and shrinkage characteristics of expansive soil foundation under railway subgrade.
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  • [1] XEIDAKIS George, KOUDOUMAKIS Panagiotis, TSIRAMBIDES Ananias. Road construction on swelling soils: the case of Strymi soils, Rhodope, Thrace, Northern Greece[J]. Bulletin of Engineering Geology and the Environment, 2004, 63: 93-101.
    [2] FREDLUND D G, RAHARDJO H. Unsaturated soils mechanics in engineering practice[M]. New York: Wiley, 2012.
    [3] 陈伟志, 蒋关鲁, 王智猛, 等. 分级连续加载条件下原状膨胀土固结变形研究[J]. 岩土力学, 2014, 35(3): 710-716. (CHEN Wei-zhi, JIANG Guan-lu, WANG Zhi-meng, et al. Study of consolidation deformation of undisturbed expansive soil under stage continuous loading conditions [J]. Rock and Soil Mechanics, 2014, 35(3): 710-716. (in Chinese))
    [4] FLURY M, FLUHLER W, JURY W A, et al. Susceptibility of soils to preferential flow of water: a field study[J]. Water Resources Research, 1994, 30(7): 1945-1954.
    [5] HILLEL D. Environmental soil physics[M]. San Diego: Academic Press, 1998.
    [6] 杨果林, 丁加明. 膨胀土路基的胀缩变形模型试验[J]. 中国公路学报, 2006, 19(4): 23-29. (YANG Guo-lin, DING Jia-ming. Model test on expansion and shrinkage deformation in expansive soil roadbed[J]. China Journal of Highway and Transport, 2006, 19(4): 23-29. (in Chinese))
    [7] 王年香, 顾荣伟, 章为民, 等. 膨胀土中单桩性状的模型试验研究[J]. 岩土工程学报, 2008, 30(1): 56-60. (WANG Nian-xiang, GU Rong-wei, ZHANG Wei-min, et al. Model tests on behaviour of single pile in expansive soil[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(1): 56-60. (in Chinese))
    [8] 王亮亮, 杨果林. 中—强膨胀土地区铁路路堑基床动静态特性模型试验[J]. 岩土工程学报, 2013, 35(1): 137-143. (WANG Liang-liang, YANG Guo-lin. Model tests on static and dynamic performances of cut subgrade of railways in medium-strong expansive soil area[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(1): 137-143. (in Chinese))
    [9] NG W W C, ZHAN L T, FREDLUND D G. Performance of an unsaturated expansive soil slope subjected to artificial rainfall infiltration[J]. Géotechnique, 2003, 53(2): 143-157.
    [10] 孔令伟, 陈建斌, 郭爱国, 等. 大气作用下膨胀土边坡的现场响应试验研究[J]. 岩土工程学报, 2007, 29(7): 1065-1073. (KONG Ling-wei, CHEN Jian-bin, GUO Ai-guo, et al. Field response tests on expansive soil slopes under atmosphere[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(7): 1065-1073. (in Chinese))
    [11] 李雄威, 孔令伟, 郭爱国. 膨胀土堑坡雨水入渗速率的影响因素与相关性分析[J]. 岩土力学, 2009, 30(5): 1291-1296. (LI Xiong-wei, KONG Ling-wei, GUO Ai-guo. Effects and correlation analysis of infiltration velocity of expansive soil cut slope[J]. Rock and Soil Mechanics, 2009, 30(5): 1291-1296. (in Chinese))
    [12] TB10020—2009高速铁路设计规范(试行)[S]. 2009. (TB10020—2009 Code for design of high speed railway (try out) [S]. 2009. (in Chinese))
    [13] MYSLINSKA E. Accuracy of expansion charts-the influence of interstitial water chemistry[J]. Bulletin of Engineering Geology and the Environment, 1999, 57(3): 263-265.
    [14] GB50112—2013 膨胀土地区建筑技术规范[S]. 2013. (GB50112-2013 Technical code for buildings in expansive soil regions[S]. 2013. (in Chinese))
    [15] CUI Y J, MANTHO A T, CUI K, et al. Water retention properties and volume change behaviour of natural Romainville clay[C]// Proceeding of the 3rd International Conference on Unstaturated Soils UNSAT2006. Istanbul, 2006: 873-882.
    [16] 蒋关鲁, 王海龙, 李安洪, 等. 土质路基荷载下地基反力试验研究[J]. 铁道学报, 2012, 34(6): 69-74. (JIANG Guan-lu, WANG Hai-long, LI An-hong, et al. Experimental study on ground reaction under subgrade[J]. Journal of the China Railway Society, 2012, 34(6): 69-74. (in Chinese))
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出版历程
  • 收稿日期:  2014-01-09
  • 发布日期:  2014-08-18

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