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YAN Qiang, LIAN Xiang-dong, LING Jian-ming. Time series finite element analysis of support of slope excavation[J]. Journal of Traffic and Transportation Engineering, 2020, 20(3): 61-71. doi: 10.19818/j.cnki.1671-1637.2020.03.005
Citation: YAN Qiang, LIAN Xiang-dong, LING Jian-ming. Time series finite element analysis of support of slope excavation[J]. Journal of Traffic and Transportation Engineering, 2020, 20(3): 61-71. doi: 10.19818/j.cnki.1671-1637.2020.03.005
shu

Time series finite element analysis of support of slope excavation

doi: 10.19818/j.cnki.1671-1637.2020.03.005
  • 1.

    Guangxi Communications Investment Group Corporation Ltd., Nanning 530021, Guangxi, China

  • 2.

    School of Transportation Engineering, Tongji University, Shanghai 201804, China

Funds:

National Natural Science Foundation of China 51878075

China Postdoctoral Science Foundation 2019M663872XB

More Information
  • Author Bio:

    YAN Qiang(1982-), male, senior engineer, PhD, yyqq023@163.com

  • Received Date: 2020-01-07
  • Publish Date: 2020-06-25
    Abstract
  • In order to study the influence factors of slope stability of highway reconstruction and expansion project and to seek scientific support methods, the Liuzhou to Nanning Expressway K1456+800 left-hand reconstruction expansion slope was selected as the research subject, the finite element numerical model was built by using ANSYS, and two support methods were selected as the late support and timely support. The shear strain increment, horizontal and vertical displacement increments of the slope body during the excavation of 6-grade slope in the reconstruction and expansion project were simulated. For the quantitative analysis of the trend of displacement and stress during the excavation of slope under two support conditions, 6 special nodes were selected for the monitoring. The main monitoring contents include the displacement of measuring point(including the horizontal displacement and vertical displacement), and the change of principal stress(including the maximum principal stress and the minimum principal stress) with the excavation step. Analysis result shows that whether or not it is supported in time, the maximum shear strain at each step is at the foot of slope, however, the distribution area and shear strain increments of timely support are smaller than those of late support, and the probability of slope failure is low. With the excavation, the horizontal displacement increment decreases first and then increases slightly, the vertical displacement increment increases sharply first and then decreases slowly, and the final displacement of each measuring point under the timely support is smaller than the value under the late support. When it isn't supported in time, the safety factor is close to 1.0 finally. In case of timely support, the safety factor increases greatly at each step, basically greater than 1.35. As mentioned above, the timely support can reduce the shear strain of slope, limit the horizontal and vertical displacements, reduce the overall stress level, improve the safety factor, and significantly improve the stability of slope.

     

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    • References(33)
  • [1]
    ZHANG Shen-yong, DU Wei, WANG Qian-kun. Criterion of normalized deformation for instability analysis of excavation slope based on modified Ohta-Sechiguchi anisotropic elastoplastic model[J]. China Civil Engineering Journal, 2019, 52(11): 86-96. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC201911010.htm
    [2]
    LIU Guang-ning, LI Cong, LU Bo, et al. Model test of shallow failure of fully strong weathered rock slope induced by rainfall[J]. Journal of Yangtze River Scientific Research Institute, http://kns.cnki.net/kcms/detail/42.1171.TV.20191104.1013.002.html. (inChinese).
    [3]
    JIN Lei, ZENG Ya-wu, CHENG Tao, et al. Stability analysis of soil-rock mixture slope based on 3-D DEM[J]. Journal of Harbin Institute of Technology, 2020, 52(2): 41-50. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-HEBX202002006.htm
    [4]
    JIANG Shui-hua, LIU Xian, HUANG Fa-ming, et al. Failure mechanism and reliability analyses of soil slopes under rainfall infiltration considering spatial variability of multiple soil parameters[J]. Chinese Journal of Geotechnical Engineering, http://kns.cnki.net/kcms/detail/32.1124.TU.20191115.1133.002.html. (inChinese).
    [5]
    YAN Qiang. Study on the slope stability in the excavation process of reconstruction highway[D]. Xi'an: Chang'an University, 2015. (in Chinese).
    [6]
    YIN De-sheng, WANG Wei-ming, CHEN Sheng-hong. Dynamic finite element method for excavation process simulation of rock slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(11): 2217-2224. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201111008.htm
    [7]
    DUAN Zhao, TANG Hao, DANG Qi, et al. Discrete element simulation of landslide induced by slope excavation[J]. Journal of Chang'an University (Natural Science Edition), 2014, 34(5): 49-55. (in Chinese). doi: 10.3969/j.issn.1671-8879.2014.05.008
    [8]
    LIN Tong-li, HE Zhong-ming, CAI Jun. Analysis and comparison of embankment widening schemes in highway renovation and expansion project[J]. Mining and Metallurgical Engineering, 2014, 34(6): 18-21. (in Chines). doi: 10.3969/j.issn.0253-6099.2014.06.005
    [9]
    WANG Shu-hong, RAO Wen-jie, GUAN Xiang-xiang, et al. Search of key block in complex rock mass slope and support of excavated slope[J]. Journal of Northeastern University (Natural Science), 2013, 34(7): 1017-1021. (in Chinese). doi: 10.3969/j.issn.1005-3026.2013.07.024
    [10]
    ZHOU Yong, WANG Xu-ri, ZHU Yan-peng, et al. Monitoring and numerical simulation of an interbedding high slope composed of soft and hard strong-weathered rock[J]. Rock and Soil Mechanics, 2018, 39(6): 2249-2258. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201806041.htm
    [11]
    ZHANG Yuan, DONG Jian-hua, DONG Xu-guang, et al. Analysis of freezing and thawing of slope improved by soil nailing structure in seasonal frozen soil region[J]. Rock and Soil Mechanics, 2017, 38(2): 574-582, 592. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201702035.htm
    [12]
    WANG Ding-wei, WU Fa-quan, MA Ai-yang. Three dimensional numerical simulation for right bank slope of Lazhai Hydropower Station[J]. Journal of Engineering Geology, 2013, 21(4): 641-648. (in Chinese). doi: 10.3969/j.issn.1004-9665.2013.04.023
    [13]
    ZHAO Xiao-yan, HU Hou-tian, TANG Mao-ying. Study on excavation effect of high soil-like slope by centrifugal model test and numerical simulation[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(S2): 4046-4051. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2006S2110.htm
    [14]
    ZHAO Chuan, FU Cheng-hua, HE Huan, et al. Numerical simulation on the excavation and support of high and steep slope of cable-crane platform of Jinping Hydropower Station[J]. Journal of Yangtze River Scientific Research Institute, 2015, 32(8): 94-98. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-CJKB201508022.htm
    [15]
    LI An-xing, LI Yang-qiu, WANG Yan-zeng, et al. Effect of filling and grouting reinforcement on deep foundation pit support structure and adjacent tunnels[J]. Hans Journal of Civil Engineering, 2019, 8(3): 821-829. (in Chinese).
    [16]
    YAO Yu-chun, YAO Ling-kan, YUAN Bi-yu. Analysis of a centrifugal model of slope damage mechanism during rainfall[J]. China Railway Science, 2004, 25(4): 64-68. (in Chinese). doi: 10.3321/j.issn:1001-4632.2004.04.012
    [17]
    YAO Yu-chun, YAO Ling-kan, YUAN Bi-yu, et al. Centrifuge model test and numerical analysis of effects of excavation and support sequence on slope stability[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(5): 1075-1080. (in Chinese). doi: 10.3321/j.issn:1000-6915.2006.05.034
    [18]
    YAO Yu-chun, YAO Ling-kan, YUAN Bi-yu. Study of centrifuge model tests on transition effect of cut slopes[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(1): 76-80. (in Chinese). doi: 10.3321/j.issn:1000-4548.2006.01.015
    [19]
    ZHAO Peng-hui, DIAO Wen-zhi, ZHOU Zhi-lin. Numerical simulation of the influence of excavation and support methods on slope stability[J]. Subgrade Engineering, 2006(4): 16-18. (in Chinese). doi: 10.3969/j.issn.1003-8825.2006.04.006
    [20]
    ZHAO Shang-yi, ZHENG Ying-ren, TANG Shu-ming. Numerical simulation analysis for the influence of construction process of deep cut slop on its stability[J]. Underground Space, 2003, 23(4): 370-374. (in Chinese). doi: 10.3969/j.issn.1673-0836.2003.04.006
    [21]
    ZHU Yan-peng, WANG Li-wen. Research on numerical simulation of slope grading flexible reinforcement[J]. Journal of Architecture and Civil Engineering, 2012, 29(4): 25-31. (in Chinese). doi: 10.3969/j.issn.1673-2049.2012.04.005
    [22]
    YANG Yu, GUO Rui. Research on the stability of multi-level rock slope and the reinforcement effect[J]. Journal of Liaoning Technical University (Natural Science Edition), 2016, 35(6): 607-612. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-FXKY201606010.htm
    [23]
    LI Tao, XU Nu-wen, DAI Feng, et al. Stability analysis of left bank abutment slope at Baihetan Hydropower Station subjected to excavation[J]. Rock and Soil Mechanics, 2018, 39(2): 665-674. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201802034.htm
    [24]
    MA Guo-min, LI Guo-feng, YANG Lei, et al. Analysis on applicability of shed-tunnel and effect of combined supporting under high and steep rocky slope condition of Funing-Longliu Expressway[J]. China Journal of Highway and Transport, 2016, 29(9): 112-120. (in Chinese). doi: 10.3969/j.issn.1001-7372.2016.09.015
    [25]
    LIU Jun, XU Zhi-jun, YUAN Fang, et al. Design and monitoring of foundation pit support project for pile foundation underpinning of abutment of interchange bridges[J]. Chinese Journal of Geotechnical Engineering, 2019, 41(S2): 217-220, 225. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2019S2056.htm
    [26]
    CHEN Le-qiu, YANG Heng-shan, LIN Hang. Finite element analysis for slope stability and its influencing factors with pile reinforcement[J]. Journal of Central South University (Science and Technology), 2011, 42(2): 490-494. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZNGD201102035.htm
    [27]
    GAO Chun-jun, ZHANG Xue-fu, XIANG Li-hui, et al. Impact of deep drainage hole blockage on high slope stability in rich water formation[J]. Journal of Civil, Architectural and Environmental Engineering, 2018, 40(5): 92-101. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-JIAN201805012.htm
    [28]
    WEI Zuo-an, YIN Guang-zhi, WANG J G, et al. Stability analysis and supporting system design of a high-steep cut soil slope on an ancient landslide during highway construction of Tehran-Chalus[J]. Environmental Earth Sciences, 2012, 67(6): 1651-1662. doi: 10.1007/s12665-012-1606-2
    [29]
    KAYA A, ALEMDAG S, DAG S, et al. Stability assessment of high-steep cut slope debris on a landslide (Gumushane, NE Turkey)[J]. Bulletin of Engineering Geology and the Environment, 2016, 75(1): 89-99. doi: 10.1007/s10064-015-0753-6
    [30]
    MEYER N, AHANGARI K. An investigation on stability and support of intake rock slopes of the Karun III Dam and power project[C]//KONIETZKY H. Numerical Modeling of Discrete Materials in Geotechnical Engineering, Civil Engineering, and Earth Sciences. New York: CRC Press, 2004: 229-234.
    [31]
    DING Xiu-mei, LIU Guang-shi, HUANG Run-qiu, et al. Shear strain increment applying in stability studying of debris slope[J]. Advance in Earth Sciences, 2004, 19(S): 318-323. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ2004S1064.htm
    [32]
    ZHANG Wei. Relationship between slope displacement parameters and stability change[J]. Xinjiang Transportation Science and Technology, 2016(2): 15-19. (in Chinese).
    [33]
    RAO Yun-zhang, ZHANG Xue-yan, LI Jian, et al. Relationship between slope safety factor and landslide probability[J]. Journal of Yangtze River Scientific Research Institute, 2017, 34(5): 63-67. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-CJKB201705015.htm
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