Volume 22 Issue 6
Dec.  2014
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CHANG Shiqing, BAI Haifeng, YE Jianhong, ZHANG Zhongjian. 2014: DYNAMIC RESPONSE OF RAILWAY SANDY FOUNDATION UNDER TRAIN RUNNING LOADING. JOURNAL OF ENGINEERING GEOLOGY, 22(6): 1077-1085. doi: 10.13544/j.cnki.jeg.2014.06.010
Citation: CHANG Shiqing, BAI Haifeng, YE Jianhong, ZHANG Zhongjian. 2014: DYNAMIC RESPONSE OF RAILWAY SANDY FOUNDATION UNDER TRAIN RUNNING LOADING. JOURNAL OF ENGINEERING GEOLOGY, 22(6): 1077-1085. doi: 10.13544/j.cnki.jeg.2014.06.010

DYNAMIC RESPONSE OF RAILWAY SANDY FOUNDATION UNDER TRAIN RUNNING LOADING

doi: 10.13544/j.cnki.jeg.2014.06.010
  • Received Date: 2013-10-21
  • Rev Recd Date: 2014-03-10
  • Publish Date: 2014-12-25
  • Intensive dynamic loading is generated when a train is running on railway due to the uneven track. Accordingly, intensive dynamic response occurs in the roadbed and foundation of railway. The excessive vibration response of roadbed and foundation is harmful for the security of running train, and also would make passengers feel uncomfortable. Furthermore, it also would bring harmful vibration to surrounding buildings, and noise pollution to people living around. Therefore, it is practically meaningful to investigate the dynamic response of roadbed and foundation of railways. This paper employs the Biot's dynamic equation as the governing equation, and takes the FEM package FSSI-CAS 2D as the numerical tool. The dynamics of a sandy foundation with ground-water under train running loading is comprehensively investigated. The consideration of the unsaturated zone in the foundation over the static ground-water line is a special point in this investigation. The numerical results indicate that the railway foundation system intensively responds to the running loading of train. Among them, the vertical dynamics with low frequency is the dominant part. It is also observed that the dynamic response of roadbed and foundation of railway both damps in horizontal and vertical direction. The negative pore pressure in unsaturated zone keeps unchanged due to the minor relative displacement of soil particles. The methods, tool and computational cases in this paper can be a research example for evaluating the safety, travelling comfort of a train running on a sandy foundation with ground-water.
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  • [1] 孙宏磊, 蔡袁强,陈成振. 列车荷载作用下路轨系统及饱和弹性半空间上覆盖土层的动力响应[J]. 岩土工程学报, 2009, 31 (6): 922~928. Sun Honglei, Cai Yuanqiang, Chen Chengzhen. Dynamic response of railways on layered half-space subjected to moving train load[J]. Chinese Journal of Geotechnical Engineering, 2009, 31 (6): 922~928.

    [2] 叶俊能. 列车荷载下轨道系统-层状横观各向同性饱和地基动力响应[J]. 岩土力学, 2010, 31 (5): 1597~1604. Ye Junneng. Dynamic response of track system-layered transversely isotropic saturated subgrade to train loads[J]. Rock and Soil Mechanics, 2010, 31 (5): 1597~1604.

    [3] 陈建国, 夏禾,肖军华,等. 列车运行对周围地面振动影响的试验研究[J]. 岩土力学, 2008, 29 (11): 3113~3118. Chen Jianguo, Xia He, Xiao Junhua, et al. Experimental study of ground vibrations induced by moving train[J]. Rock and Soil Mechanics, 2008, 29 (11): 3113~3118.

    [4] 李双洋, 张明义,张淑娟,等. 列车荷载下青藏铁路冻土路基动力响应分析[J]. 冰川冻土, 2008, 30 (5): 860~867. Li Shuangyang, Zhang Mingyi, Zhang Shujuan, et al. Analysis of the dynamic response of Qinghai-Tibetan railway embankment in permafrost regions under train load[J]. Journal of Glaciology and Geocryology, 2008, 30 (5): 860~867.

    [5] 陈建国, 肖军华,李前进,等. 提速列车荷载作用下铁路路基动力特性的研究[J]. 岩土力学, 2009, 30 (7): 1944~1950. Chen Jianguo, Xiao Junhua, Li Qianjin, et al. Dynamic responses of existing-railway subgrade with train speed increasing[J]. Rock and Soil Mechanics, 2009, 30 (7): 1944~1950.

    [6] Ye J H. Numerical analysis of wave-seabed-breakwater interactions[Doctorate Thesis][D]. Dundee, UK: University of Dundee, 2012.

    [7] Ye J H. Numerical modelling of consolidation of 2-D porous unsaturated seabed under a composite breakwater[J]. Mechanika, 2012, 18 (4): 373~379.

    [8] Ye J H,Jeng D S,Chan A H C. Consolidation and dynamics of 3D unsaturated porous seabed under rigid caisson breakwater loaded by hydrostatic pressure and wave[J]. Science China: Technological Sciences, 2012, 55 (8): 2362~2376.

    [9] 张燕, 纪洪广,叶剑红. 扰动岩质边坡强震作用下动力响应分析[J]. 煤炭学报, 2013, 38 (增2): 304~311. Zhang Yan, Ji Hongguang, Ye Jianhong. Dynamic response analysis of disturbed rock slope under strong earthquake loading[J]. Journal of China Coal Society, 2013, 38 (S2): 304~311.

    [10] Ye J H, Jeng D-S, Wang R, et al. Validation of a 2-D semi-coupled numerical model for fluid-structure-seabed interaction[J]. Journal of Fluids and Structures, 2013, 42: 333~357.

    [11] Ye J H, Jeng D S, Liu P L F, et al. Breaking wave-induced response of composite breakwater and liquefaction in seabed foundation[J]. Coastal Engineering, 2014, 85:72~86.

    [12] Ye J H,Jeng D S. Effects of bottom shear stresses on the wave-induced dynamic response in a porous seabed: PORO-WSSI(Shear) model[J]. Acta Mechanica Sinica, 2011, 27 (6): 898~911.

    [13] 汪杰, 宋瑞刚,袁天辰,等. 地铁列车荷载的仿真模拟[J]. 上海工程技术大学学报, 2011, 25 (3): 213~216. Wang Jie, Song Ruigang, Yuan Tianchen, et al. Simulation of metro train load[J]. Journal of Shanghai University of Engineering Science, 2011, 25 (3): 213~216.

    [14] 张昀青, 侯永会,杨竹林. 轨道结构参数对轮轨作用力的影响分析[J]. 河北交通科技, 2005, 2 (2): 1~3. Zhang Yunqing, Hou Yonghui, Yang Zhulin. Effect analysis of track structure to the wheel-rail for CE[J]. Hebei Jiaotong Seience and Technology, 2005, 2 (2): 1~3.

    [15] 黄耿彩. 受扰动地铁隧道土体在列车周期性振动荷载下位移规律的研究[硕士学位论文][D]. 上海:同济大学, 2007. Huang Gengcai. Study on displacement law under periodic load induced by train on the turbulent soil[Thesis of Master][D]. Shanghai: Tongji University, 2007.
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