Rock and Soil Mechanics ›› 2020, Vol. 41 ›› Issue (4): 1189-1194.doi: 10.16285/j.rsm.2019.0806

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of anti-sliding mechanism and force of lattice anchor in soil landslide

HAN Dong-dong1, MEN Yu-ming1, HU Zhao-jiang2   

  1. 1. College of Geology Engineering and Geomatics, Chang’an University, Xi’an, Shaanxi 710054, China; 2. China Electronic Research Institute of Engineering Investigations and Design, Xi’an, Shaanxi 710054, China
  • Received:2019-05-06 Revised:2019-07-12 Online:2020-04-11 Published:2020-07-01
  • Supported by:
    This work was supported by the Land and Resources Survey Project (1212011220145), the Fundamental Research Funds for the Central Universities (310826171016) and the Natural Science Basic Research Program of Shaanxi (2018JQ4044).

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Abstract: In this paper, a large-scale physical model test of landslide prevention and control was conducted to investigate the deformation and displacement of the lattice anchor system in soil landslide under the surcharged load on the top of the slope. The objectives revealed the anti-sliding mechanism of lattice anchor. The relationship between the anchorage force and slope displacement and anchor deformation was discussed, and a calculation method of the ultimate anchorage force was proposed. The results showed that when the landslide was initiated, the lattice beam and the slope as a whole-body rotate and slip, the bolts are bent and deformed at the slip surface, which was in a state of bending and tensile stress. The anti-sliding is implemented by the shear resistance of anchors near the sliding surface and by the retaining resistance of the lattice beam with anchors. The ultimate anchorage force of the lattice anchor consists of three parts: initial pre-stress of the bolt, anchor tension caused by bending deformation of the bolt and anchor tension caused by the slope displacement. It can be calculated by the formula: . The results can provide some reference for the optimal design of the lattice anchor system.

Key words: soil landslide, lattice anchor, anti-sliding mechanism, anchorage force

CLC Number: 

  • TU 42
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[2] JIANG Ze-feng, ZHANG Ge, ZHU Da-yong, WANG Jun, . Critical sliding field method for slope under anchorage force and its application [J]. Rock and Soil Mechanics, 2019, 40(7): 2799-2806.
[3] ZHOU Wen-jiao, WEI Shao-wei, ZHANG Yu-fang, . Model test study on anti-sliding performance of multiple segment grouting steel-tube [J]. Rock and Soil Mechanics, 2019, 40(11): 4412-4420.
[4] XIE Can, LI Shu-chen, LI Shu-cai, LIAO Qi-kai, ZHAO Shi-sen. Study of anchorage force loss of anchor cable under seepage flow and soil creep [J]. , 2017, 38(8): 2313-2321.
[5] CHEN Zhi-chao , LUO Xuan , LIU Kan , YE Long-zhen , ZUO Chang-qun,. Seepage characteristics and mitigation measures of a gravel soil landslide [J]. , 2016, 37(3): 813-818.
[6] WANG Qing-biao , ZHANG Cong , WANG Hui , WEN Xiao-kang , . Study of coupling effect between anchorage force loss of prestressed anchor cable and rock and soil creep [J]. , 2014, 35(8): 2150-2156.
[7] LIU Hong , ZHOU De-pei , ZHANG Yi-feng,. Model test study of anti-sliding mechanism of micro-pile combined structure [J]. , 2013, 34(12): 3446-3452.
[8] SUN Yong. Research on calculation method of double-row anti-sliding structure under sliding surface [J]. , 2009, 30(10): 2971-2977.
[9] TU Yu-min. Study on working mechanism of forepoling bolts in soil nailing protection [J]. , 2003, 24(2): 198-201.
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