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| Dynamic Response of Loess Stepped Slopes Subjected to Vehicle Vibration |
| LI Peng1,2,3, GUO Min2, LIU Shi-jie2, XU Ji-wei1,3 |
1. College of Geological Engineering and Geomatics, Chang'an University, Xi'an Shaanxi 710054, China;
2. Open Research Laboratory of Geotechnical Engineering, MLR, Xi'an Shaanxi 710054, China;
3. Key Laboratory for Geo-Hazards in Loess Area, MLR, Xi'an Shaanxi 710054, China |
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Abstract This work aims to provide theoretical support for the study of structural loess degradation and slope disaster mechanism under automobile vibration. The research on the dynamic response law of loess stepped slopes under the action of automobile vibration is currently insufficient. Thus, this study takes the loess stepped slope located in Anzi road as the research object and summarizes its deformation modes, failure modes, and characteristics. Vehicle vibration signals of different types, speeds, and positions are obtained by field investigation and monitoring. The following conclusions are derived on the basis of the statistical analysis of the monitoring signals. (1) The vibration response of the slope increases with the increase of vehicle load. As the vehicle load increases, the area with strong vibration response gradually migrates from the second-to the first-grade slope. (2) The amplification effect of the vibration wave is strong when the vehicle load is small and weak when the vehicle load is large. Moreover, the Z-direction wave appears as a vibration attenuation. (3) The X-direction wave's frequency distribution presents a single peak, and the main frequency is concentrated in 17-65 Hz. The Z-direction wave's frequency distribution presents multiple peaks, and the main frequency is concentrated in 22-185 Hz. (4) The frequency variation is not greatly relevant to the type, speed, and position of the vehicle but is determined by the slope itself. (5) The stress state of the loess stepped slope changes under vehicle vibration. In the design of loess stepped slopes, the slope gradient should not be considerably large, and the first-and second-grade slopes should not be extremely high. Furthermore, slope protection should be focused on the first-and second-grade slopes. This research reveals the dynamic response of loess stepped slopes subjected to vehicle vibration, and the results may help establish theoretical and practical methods to protect this slope type.
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Received: 08 September 2019
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| Fund:Supported by the Open Fund Project of Key Laboratory for Geo-Hazards in Loess Area, MLR(No.KLGLAMLR201506) |
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Corresponding Authors:
LI Peng
E-mail: lipeng198782@163.com
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[1] PENG Jian-bing, LIN Hong-zhou, WANG Qi-yao, et al. The Critical Issues and Creative Concepts in Mitigation Research of Loess Geological Hazards[J]. Journal of Engineering Geology, 2014, 22(4):684-691. (in Chinese)
[2] XU Zhang-jian, LIN Zai-guan, ZHANG Mao-sheng. Loess in China and Loess Landslides[J]. Chinese Journal of Rock Mechanics and Engineering, 2007,26(7):1297-1312. (in Chinese)
[3] LI Xi-an, PENG Jian-bing, ZHEN Shu-yan, et al. Loess Cave Hazard in Highways and Water and Soil Loss[J]. Highway, 2004(12):70-73. (in Chinese)
[4] WANG Nian-qin, ZHANG Zhuo-yuan. Study on Loess Landslide Disaster[M]. Lanzhou:Lanzhou University Press, 2005. (in Chinese)
[5] WANG De-fu, ZHAO Xue-ying, YAO Bao-shun. Distribution of Loess Slump in Mizhi County and Its Effect on Sediment Yield in the Basin[J]. Soil and Water Conservation in China, 1991, (8):23-26. (in Chinese)
[6] QU Yong-xin, ZHANG Yong-shuang, CHEN Qing-lai. Preliminary Study on Loess Slumping in the Area Between Northern Shaanxi and Western Shaanxi-Taking the Pipeline for Transporting Gas From West to East in China[J]. Journal of Engineering Geology, 2001, 9(3):233-240. (in Chinese)
[7] ZHANG Yong-shuang, QU Yong-xin, HE Feng. Geological Hazards of Highway and Their Control Countermeasures in Sand-Loess Area of Northern Shaanxi[J]. The Chinese Journal of Geological Hazard and Control, 2004, 15(2):35-38. (in Chinese)
[8] DUAN Zhao, ZHAO Fa-suo, CHEN Xin-jian. Types and Spatio-Temporal Distribution of Loess Landslides in Loess Plateau Region-A Case Study in Wuqi County[J]. Journal of Catastrophology, 2011, 26(4):52-56. (in Chinese)
[9] LIU Peng-fei, LI Bin, CHEN Zhi-xin. Characteristics and Staging of the Loess Landslide in the Yan'an Area, Shaanxi Province[J]. The Chinese Journal of Geological Hazard and Control, 2012, 23(4):16-19. (in Chinese)
[10] ZHU Jun-hua, CHEN Zhi-xin, ZHU Yan-bo. Distribution Regularity and Development Characteristics of Landslides in Yan'an[J]. Geological Science and Technology Information, 2017, 36(2):236-243. (in Chinese)
[11] ZHU Jun-hua, CHEN Zhi-xin, ZHAO Fa-suo, et al. Study on the Development Features of Unstable Slopes in Yan'an[J]. Journal of Catastrophology, 2016,31(4):61-64,109. (in Chinese)
[12] ZHANG Mao-sheng, XIAO Pei-xi, WEI Xing-li. A Preliminary Discussion of the Occurrence of Landslide in the Baota District of Yan'an City[J]. Hydrogeological Engineering Geology, 2006,33(6):72-74,79. (in Chinese)
[13] YUAN Ai-ren. Analysis and Assessment of the Stability of Loess Landslides in the Tongyan Highway[D].Xi'an:Xi'an University of Science and Technology, 2006. (in Chinese)
[14] CHEN Bo. The Instability Damage Factors and Deformation Modes Analysis of the Cutting Slope[J]. Ground Water, 2011, 33(4):102-104. (in Chinese)
[15] XIE Yong-li, HU Jin-chuan, WANG Wen-sheng. Centrifugal Model Test for Stability Characteristics of Highway Cut Slope in Loess[J]. China Journal of Highway and Transport, 2009, 22(5):1-7. (in Chinese)
[16] HU Jin-chuan, XIE Yong-li, WANG Wen-sheng. Study of Stability Characteristics of Multi-Stair High Cut Slope in Loess Highway[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S1):3093-3100. (in Chinese)
[17] WANG Li-li. The Characteristics and Cause of Geological Disasters in the Section of Ganquan-Yan'an, Hangling-Yan'an Highway[D]. Xi'an:Chang'an University, 2011. (in Chinese)
[18] FAN Li-xiao, MA Yu-mei, QIAN Wei, et al. Analysis of Factors Affecting Highway Loess Collapse Disaster[J]. East China Highway, 2014, (2):56-58. (in Chinese)
[19] LIU Dong-sheng. Loess and Environment[M]. Xi'an:Shaanxi People's Publishing House,1985. (in Chinese)
[20] NI Wan-kui. Reliability Analysis and Optimization Design of Loess High Slope[D]. Xi'an:Xi'an Institute of Technology, 1999. (in Chinese)
[21] YE Wan-jun, YANG Geng-she, CHANG Zhong-hua, et al. Characteristics of Development State of Spalling Hazard in Loess Slope and Its Evaluation Method[J]. Journal of Engineering Geology, 2011, 19(1):37-42. (in Chinese)
[22] YE Wan-jun, YANG Geng-xin, GUO Xi-shan. Style of Spalling Hazard in Loess Slope and Its Develop Characteristic[J]. Journal of Xi'an University of Science and Technology, 2010, 30(1):52-57. (in Chinese)
[23] M Popeseul. A Suggested Method for Reporting Landslide Remedial Measure[J]. Bulletin of Engineering Geology and the Environment, 2001, 60(1):58-62.
[24] CAI Han-cheng, YAN Zhi-xin, WANG Min-qun, et al. Numerical Analysis of Slope Dynamic Response under Traffic Loads[J]. Northwest Seismological Journal, 2010, 32(3):220-225. (in Chinese)
[25] YE Si-qiao, TANG Hong-mei, XIAO Sheng-xie, et al. Analysis on Effect of Traffic Loads on Landslide Stability[J]. Journal of Chongqing Jianzhu University, 2006, 28(5):106-109. (in Chinese)
[26] JIAN Wen-bin, HU Zhong-zhi, FAN Xiu-feng, et al. Research on Responses of Slope under Cyclic Load[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(12):2562-2567. (in Chinese)
[27] YAN Zhi-xin, LIU Can, PENG Ning-bo, et al. Dynamic Response of Anchoring Highway Slope under Dynamic Load[J]. Journal of Chang'an University (Natural Science Edition), 2015, 35(1):61-67. (in Chinese)
[28] FAN Xiu-feng, JIAN Wen-bin. On Characters of Slope Vibration due to Traffic Loads[J]. Rock and Soil Mechanics, 2006, 27(S2):1197-1201. (in Chinese)
[29] LIANG Tie-cheng, LI Tong-lin, DONG Rui-chun. A Study on Attenuation of Vehicle Caused Vibration[J]. Journal of Jilin University:Earth Science Edition, 2003, 33(3):382-386. (in Chinese)
[30] LI Peng, SU Sheng-rui, HUANG Yu, et al. Research on Formation Mechanism and Deformation Law of Shattered-Sliding Collapses[J]. Rock and Soil Mechanics, 2015, 36(12):3576-3582. (in Chinese) |
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2019, Vol. 13 
