• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
  • Scopus数据库收录期刊

中—强膨胀土地区铁路路堑基床动静态特性模型试验

王亮亮, 杨果林

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.
引用本文: 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 expensive soil area[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(1): 137-143.
Citation: WANG Liang-liang, YANG Guo-lin. Model tests on static and dynamic performances of cut subgrade of railways in medium-strong expensive soil area[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(1): 137-143.

中—强膨胀土地区铁路路堑基床动静态特性模型试验  English Version

基金项目: 国家自然科学基金资助项目(51278499);铁道部科技研究开发计划课题(2010G016-B);湖南省博士研究生科研创新项目(CX2012B062)
详细信息
    作者简介:

    王亮亮(1982- )男,陕西延安人,博士研究生,从事道路与铁道路基以及岩土工程的设计研究工作。E-mail: wlltm0304@163.com。

  • 中图分类号: TU443

Model tests on static and dynamic performances of cut subgrade of railways in medium-strong expensive soil area

  • 摘要: 为研究以中—强膨胀土为地基的高速铁路路堑基床在不同服役环境下的动静态特性,在实验室内进行1∶1大比例尺模型试验,分别对基床在干燥状态、降雨和地下水位上升3种服役环境下以4 Hz频率进行100万次激振,监测路堑基床不同位置的动态响应和变形规律。结果表明:轨道正下方位置基床范围内的动应力主要受服役环境影响,与激振次数关系不大;动应力沿深度的衰减曲线近似成二次曲线型;膨胀土路堑基床变形受服役环境的影响大于振动次数;干燥状态和降雨时,基床变形随着振动次数的增加先增大后趋于稳定,地下水位上升时,基底膨胀土膨胀变形,并引起基床产生回弹变形;基底膨胀土干缩湿胀过程中的“过程性变形差”会造成轨面标高反复变化,极大的增加线路维护工作量。
    Abstract: In order to study the static and dynamic performances of cut subgrade of high-speed railways in medium-strong expensive soil area, model tests with a large scale of 1∶1 are performed. A cyclic load with frequency of 4 Hz and excitation of 1000000 times is imposed on the subgrade model under three kinds of working conditions (dry, raining and groundwater level rise). The results show that the dynamic stress in the subgrade beneath the track is mainly affected by the working conditions and not significantly affected by the vibrating number. The dynamic stress attenuation curve is conic in the vertical direction. The dynamic deformation is affected by the working conditions and vibrating number, that is, with the increase of the vibrating number, the deformation increases under the dry and raining conditions at first and then tends to be stable, and the subgrade rises because of the swelling deformation of expensive soil when the groundwater level increases. The in-process deformation difference is induced during the asynchronous swelling or shrinkage deformation process of expansive soil and causes the rail surface elevation to change repeatedly, and the maintenance work for track lines is greatly increased.
  • [1] ITO Maki, AZAM Shahid. Determination of swelling and shrinkage properties of undisturbed expansive soils[J]. Geotech Geol Eng, 2010,28:413-422
    [2] ITO M, AZAM S. Engineering characteristics of a glaciolacustrineclay deposit in a semi-arid climate[J]. Bull Eng Geol Environ, 2009,68:551-557
    [3] XEIDAKIS George, KOUDOUMAKIS Panagiotis, TSIRAMBIDES Ananias. Road construction on swelling soils: the case of Strymi soils, Rhodope, Thrace, Northern Greece[J]. Bull Eng Geol Env, 2004,63:93-101
    [4] 冯玉勇,张永双,曲永新,等. 南昆铁路百色盆地膨胀土路堤病害机理研究[J]. 岩土工程学报, 2001,23(4):463-467
    FENG Yu-yong, ZHANG Yong-shuang, QU Yong-xin,et al. Mechanism of embankment defects caused by expensive soils in Baise Basin, Nanning-Kunming railway[J]. Chinese Journal of Geotechnical Engineering, 2001,23(4):463-467. (in Chinese))
    [5] 韩华强,陈生水. 膨胀土的强度和变形特性研究[J]. 岩土工程学报, 2004,26(3):422-424
    HAN Hua-qiang, CHEN Sheng-shui. A study on strength and deformation of expansive soils[J]. Chinese Journal of Geotechnical Engineering, 2004,26(3):422-424. (in Chinese))
    [6] 杨果林,黄向京. 不同气候条件下膨胀土路堤土压力的变化规律试验研究[J]. 岩土工程学报, 2005,27(8):948-955
    YANG Guo-lin, HUANG Xiang-jing. Study on earth pressures in expansive soil roadbed under weather influence[J]. Chinese of Journal of Geotechnical Engineering, 2005,27(8):948-955. (in Chinese))
    [7] GASMO J, HRIZUK K J, RAHARDJO H,et al. Instrumentation of an unsaturated residual soil slope[J]. Geotechnical Testing Journal, 1999,22(2):134-143
    [8] 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))
    [9] 杨永平,周顺华. 合—宁客运专线膨胀土不同高度路堤动力特性分析[J]. 岩土力学, 2008,29(5):1403-1406
    YANG Yong-ping, ZHOU Shun-hua. Analysis of vibration character of expansive soil embankments with different heights of Hefei-Nanjing High-speed Railway[J]. Rock and Soil Mechanics, 2008,29(5):1403-1406. (in Chinese))
    [10] 郑大为,王炳龙,周顺华,等. 合宁快速客运专线膨胀土不同刚度路堤振动特性研究[J]. 岩石力学与工程学报, 2006,25(增刊2):4205-4208
    ZHENG Da-wei, WANG Bing-long, ZHOU Shun-hua,et al. Study on vibration character of expansive soil embankments with different rigidities along Hefei-Nanjing High-speed Railway[J]. Chinese Journal of Rock Mechanics and Engineering, 2006,25(S2):4205-4208. (in Chinese))
    [11] 铁建设〔2005〕140号. 新建时速200~250公里客运专线铁路设计暂行规定[S]. (Railway construction〔2005〕No.140. New construction 200~250 km/h express railway design specification[S]. (in Chinese))
    [12] 刘晓红,杨果林,方 薇. 武广高铁无碴轨道路堑基床长期动力稳定性评价[J]. 中南大学学报自然科学版, 2011,42(5):1393-1398
    LIU Xiao-hong, YANG Guo-lin, FANG Weil. Long-term dynamic stability evaluation of cutting bed under ballastless track of Wuhan-Guangzhou high-speed railway[J]. Journal of Central South University (Science and Technology), 2011,42(5):1393-1398. (in Chinese))
    [13] VOSTROUKHOV A V, METRIKINe A V. Periodically supported beam on a visco-elastic layer as a model for dynamic analysis of a high-speed railway track[J]. International Journal of Solids and Structures, 2003,40(21):5723-5752
    [14] POWRIE W, YANG L A, CLAYTON C R I. Stress changes in the ground below ballasted railway track during train passage[J]. Journal of Rail and Rapid Transit, 2007,221(2):247-261
    [15] 王常晶,陈云敏. 交通荷载引起的静偏应力对饱和软黏土不排水循环性状影响的试验研究[J]. 岩土工程学报, 2007,29(11):1742-1747
    WANG Chang-jing, CHEN Yun-min. Study on effect of traffic loading induced static deviator stress on un-drained cyclic properties of saturated soft clay[J]. Chinese Journal of Geotechnical Engineering, 2007,29(11):1742-1747. (in Chinese))
    [16] 西南交通大学. 高速铁路路基稳定性及变形控制值的研究[R]. 成都: 西南交通大学出版社, 1996.
    Southwest Jiaotong University. Study on durability and deformation control of express railway subgrade bed[R]. Chengdu: Southwest Jiaotong University Press, 1996.(in Chinese))
    [17] 沈珠江. 理论土力学[M]. 北京: 中国水利水电出版社, 2000.
    SHEN Zhu-jiang. Theoretical soil mechanics[M]. Beijing: China Water Power Press, 2000.(in Chinese))
    [18] ZHU H P, YU A B. Averaging method of granular materials[J]. Phys Rev E, 2002,66(2):1-10
    [19] SILVA M D, RAJCHENBACH J. Stress transmission through a model system of cohesionless elastic grains[J]. Letters to Nature, 2000(8):708-710
计量
  • 文章访问数:  1101
  • HTML全文浏览量:  8
  • PDF下载量:  479
  • 被引次数: 0
出版历程
  • 收稿日期:  2012-03-19
  • 发布日期:  2013-01-31

目录

    /

    返回文章
    返回