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WANG Lin-feng, ZHU Hong-zhou, SONG Nan-nan, ZOU Zheng, YAO Chang-yin. Impact signal dynamic characteristics of energy dissipation shed tunnel[J]. Journal of Traffic and Transportation Engineering, 2019, 19(5): 33-41. doi: 10.19818/j.cnki.1671-1637.2019.05.004
Citation: WANG Lin-feng, ZHU Hong-zhou, SONG Nan-nan, ZOU Zheng, YAO Chang-yin. Impact signal dynamic characteristics of energy dissipation shed tunnel[J]. Journal of Traffic and Transportation Engineering, 2019, 19(5): 33-41. doi: 10.19818/j.cnki.1671-1637.2019.05.004
shu

Impact signal dynamic characteristics of energy dissipation shed tunnel

doi: 10.19818/j.cnki.1671-1637.2019.05.004
  • 1.

    School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China

  • 2.

    School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China

More Information
  • Author Bio:

    WANG Lin-feng(1983-), male, professor, PhD, wanglinfeng@cqjtu.edu.cn

  • Received Date: 2019-04-03
  • Publish Date: 2019-10-25
    Abstract
  • Considering the rockfall falling height, mass, shape and cushion thickness, the impact signal dynamic characteristics of energy dissipation shed tunnel were studied by the indoor model test. The spectrums and autocorrelation curves of impact signal were obtained. The time-frequency characteristics of impact signal and the vibration frequency and its change law corresponding to the maximum spectrum were analyzed, and the impact signal of each frequency band was extracted based on the wavelet analysis method. The main energy distribution range of impact signal was obtained. Research result shows that the spectrum magnitude of impact signal at the center of shed tunnel roof increases as the rockfall falling height increases, and this spectrum of impact signal has four peaks with a symmetric distribution. When rockfalls with different shapes impact the shed tunnel, the order of spectrum magnitudes of impact signals from big to small is spherical, cuboid, cube and cylindrical. The thicker the ordinary shed tunnel roof cushion and the smaller the rockfall mass, the smaller the spectrum magnitude of impact signal at the center of shed tunnel roof. When a 5 kg spherical rockfall falls from the height of 0.5 m to impact the shed tunnel without cushion at the top, the maximum spectrum of impact signal of energy dissipation shed tunnel and the peak of autocorrelation curves are 60.98% and 82.57% lower than those of ordinary shed tunnel, respectively. When a 5 kg spherical rockfall falls from the height of 2.0 m to impact the shed tunnel without cushion at the top, the rockfall impact energy of energy dissipation shed tunnel mainly distributes in the frequency range of impact signal from 15.625 to 62.500 Hz, accounting for 63.73% of total energy. The rockfall impact energy of ordinary shed tunnel mainly distributes in the frequency range of impact signal from 0 to 15.625 Hz, accounting for 74.30% of total energy. Thus, the medium-frequency impact should be considered priorly when designing an energy dissipation shed tunnel, and the low-frequency impact should be considered priorly when designing an ordinary shed tunnel.

     

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    • References(30)
  • [1]
    WANG Yu-suo, LI Jun-jie, LI Zheng-hui, et al. Assessment of rockfall impact force by particle flow code numerical simulation based on discrete element model[J]. Southwest Jiaotong University, 2016, 51(1): 22-29. (in Chinese). doi: 10.3969/j.issn.0258-2724.2016.01.004
    [2]
    WANG Lin-feng, YAO Chang-yin, ZOU Zheng, et al. Study on change law of rockfall impact force based on discrete element method[J]. Railway Engineering, 2017(6): 101-105. (in Chinese). doi: 10.3969/j.issn.1003-1995.2017.06.25
    [3]
    EFFEINDZOUROU A, THOENI K, GIACOMINI A, et al. Efficient discrete modelling of composite structures for rockfall protection[J]. Computers and Geotechnics, 2017, 87: 99-114. doi: 10.1016/j.compgeo.2017.02.005
    [4]
    YUAN Jin-ke, HUANG Run-qiu, PEI Xiang-jun. Test research on rockfall impact force[J]. Rock and Soil Mechanics, 2014, 35(1): 48-54. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201401007.htm
    [5]
    WANG Lin-feng, LIU Li, TANG Fen, et al. Study on impact force of rockfall impact experiment on shed tunnel[J]. Journal of Disaster Prevent and Mitigation Engineering, 2018, 38(6): 973-979. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-DZXK201806012.htm
    [6]
    WANG Yong-dong, ZHOU Tian-yue, CHAI Lun-lei, et al. Impact mechanics of rock-fall to shed cushion based on energy analysis[J]. Chinese Journal of Underground Space and Engineering, 2018, 14(S1): 148-153. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-BASE2018S1022.htm
    [7]
    VENTURA A, DE BIAGI V, CHIAIA B. Effects of rockfall on an elastic-plastic member: a novel compliance contact model and dynamic response[J]. Engineering Structures, 2017, 148: 126-144. doi: 10.1016/j.engstruct.2017.06.046
    [8]
    LI Li-ping, SUN Shang-qu, LI Shu-cai, et al. Coefficient of restitution and kinetic energy loss of rockfall impacts[J]. Journal of Civil Engineering, 2016, 20(6): 2297-2307.
    [9]
    CALVETTI F, DI PRISCO C. Rockfall impacts on sheltering tunnels: real-scale experiments[J]. Géotechnique, 2012, 62(10): 865-876. doi: 10.1680/geot.9.P.036
    [10]
    WANG Shuang, ZHOU Xiao-jun, LUO Fu-jun, et al. An experimental study on the performance of an arch shaped shed tunnel due to the impact of rockfall[J]. Journal of Vibration and Shock, 2017, 36(12): 215-222. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZDCJ201712035.htm
    [11]
    YAN Shuai-xing, HE Si-ming, LI Xin-po. Dynamic responses and punching damage assessment of a reinforced concrete slab impacted by rock-falls[J]. Journal of Lanzhou University (Natural Science), 2019, 55(1): 64-72. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-LDZK201901009.htm
    [12]
    WANG Yu-suo, ZHOU Liang, LI Zheng-hui, et al. Mechanical responses of single-pressure arch-shaped open tunnel structure under rockfall impaction[J]. Journal of Southwest Jiaotong University, 2017, 52(3): 505-515. (in Chinese). doi: 10.3969/j.issn.0258-2724.2017.03.010
    [13]
    WANG Qi, WANG Yu-suo, GENG Ping. Research on mechanical response of tunnel shed with protective rubber cushion subjected to impact of rockfall[J]. Railway Engineering, 2017(2): 64-67. (in Chinese). doi: 10.3969/j.issn.1003-1995.2017.02.16
    [14]
    BHATTI A Q, KISHI N. Impact response of RC rock-shed girder with sand cushion under falling load[J]. Nuclear Engineering and Design, 2010, 240(10): 2626-2632. doi: 10.1016/j.nucengdes.2010.07.029
    [15]
    BHATTI A Q. Falling-weight impact response for prototype RC type rockshed with sand cushion[J]. Materials and Structures, 2015, 48(10): 3367-3375. doi: 10.1617/s11527-014-0405-5
    [16]
    DELHOMME F, MOMMESSIN M, MOUGIN J P, et al. Damage mechanisms of a reinforced concrete rock-shed slab impacted by blocks[J]. Journal of Structural Engineering, 2007, 133(10): 1426-1433. doi: 10.1061/(ASCE)0733-9445(2007)133:10(1426)
    [17]
    WANG Lin-feng, TANG Hong-mei, CHEN Hong-kai. Study on the calculation method for rockfall impact and energy dissipation effect of energy dissipation shed tunnel[J]. China Railway Science, 2012, 33(5): 40-46. (in Chinese). doi: 10.3969/j.issn.1001-4632.2012.05.07
    [18]
    HE Si-ming, WU Yong. Research on cushioning mechanism of new-typed energy dissipative rock shed[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(5): 926-932. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201005011.htm
    [19]
    WANG Dong-po, HE Si-ming, OUYANG Chao-jun, et al. Study of dynamic response of shed reinforced concrete slab to impact load of rock-fall[J]. Rock and Soil Mechanics, 2013, 34(3): 881-886. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201303046.htm
    [20]
    WANG Dong-po, HUANG Yun-kun, HE Si-ming, et al. Energy dissipation mechanism of corrugated cylinder metal energy dissipator in rock shed engineering[J]. Advanced Engineering Sciences, 2018, 50(3): 193-200. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-SCLH201803023.htm
    [21]
    CHEN Jun, DING Jie, YAN Bing, et al. Effect of subsystem parameters on vibration isolation characteristics of two-stage vibration isolation system[J]. Journal of Traffic and Transportation Engineering, 2018, 18(3): 114-128. (in Chinese). doi: 10.3969/j.issn.1671-1637.2018.03.013
    [22]
    LIU Cheng-qing, NI Xiang-yong, YANG Wan-li, et al. Design theory for passive flexible shield structures based on energy method[J]. Engineering Mechanics, 2016, 33(11): 95-104. (in Chinese). doi: 10.6052/j.issn.1000-4750.2015.03.0187
    [23]
    WANG Min, SHI Shao-qing, LIU Ying-feng, et al. Energy dissipation analysis and optimum design on a flexible rock-shed for rockfall protection[J]. Journal of Vibration and Shock, 2018, 37(1): 216-222. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZDCJ201801033.htm
    [24]
    YANG Jian-rong, BAI Yu, YANG Xiao-dong, et al. Numerical simulation and tests for flexible rock shed subjected to rackfall impact[J]. Journal of Vibration and Shock, 2017, 36(9): 172-178, 264. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZDCJ201709026.htm
    [25]
    WANG Min, SHI Shao-qing, CUI Lian-ming, et al. Experimental investigation on three-bay and single-span flexible rock-shed under impact of rockfall[J]. China Civil Engineering Journal, 2018, 51(5): 37-47. (in Chinese).
    [26]
    WANG Jing-feng, ZHAO Peng, YUAN Song, et al. Numerical study on impact resistance of steel shed gallery with composite cushion[J]. China Civil Engineering Journal, 2018, 51(S2): 7-13. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TMGC2018S2002.htm
    [27]
    SONG Yue, JIANG Yuan-jun, WANG Meng. Buffering effect of gravel cushion layer on the impact of dry granular flow against a rock shed[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37(10): 2359-2369. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201810016.htm
    [28]
    PEI Xiang-jun, LIU Yang, WANG Dong-po. Study on the energy dissipation of sandy soil cushions on the rock-shed under rockfall impact load[J]. Journal of Sichuan University (Engineering Science Edition), 2016, 48(1): 15-22. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-SCLH201601003.htm
    [29]
    YANG Qing, MA Hui, JI Xian-rong. Parameter extraction of traffic noise by analysis of auto-correlation function and interaural cross-correlation function[J]. Acta Acustica, 2014, 39(5): 624-632. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-XIBA201405013.htm
    [30]
    ZHANG Yu-ping. Signal identification method to debris flow impaction[D]. Chongqing: Chongqing Jiaotong University, 2009. (in Chinese).
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