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2018 Vol. 24, No. 4
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Nan LI, Banqiao WANG, Yuming MEN, Miaozhi ZHANG. STUDY ON DYNAMIC RESPONSE OF LANDSLIDE SUPPORTED BY PRESSURE-TYPE ANCHOR UNDER EARTHQUAKE[J]. Journal of Geomechanics, 2018, 24(4): 490-497. doi: 10.12090/j.issn.1006-6616.2018.24.04.051
Citation: Nan LI, Banqiao WANG, Yuming MEN, Miaozhi ZHANG. STUDY ON DYNAMIC RESPONSE OF LANDSLIDE SUPPORTED BY PRESSURE-TYPE ANCHOR UNDER EARTHQUAKE[J]. Journal of Geomechanics, 2018, 24(4): 490-497. doi: 10.12090/j.issn.1006-6616.2018.24.04.051
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STUDY ON DYNAMIC RESPONSE OF LANDSLIDE SUPPORTED BY PRESSURE-TYPE ANCHOR UNDER EARTHQUAKE

  • 1.

    School of Geology Engineering and Geomatics, Chang an University, Xi'an 710054, Shaanxi, China

  • 2.

    School of Shaan'xi Railway Institute, Weinan 714000, Shaanxi, China

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Received Date:  09 January 2018
Revised Date:  08 March 2018
    Abstract
  • In order to study dynamic response of anchorage landslide and mechanical behaviors of pressure-type anchor under earthquake, the finite element software ABAQUS was adopted and an anchorage landslide model supported by pressure-type anchor and lattice beam was established. On that basis, the acceleration response law of anchorage landslide, the effect of ground motion parameters on acceleration response of the model, and the mechanical behaviors of pressure-type anchor under earthquake were researched respectively. The results indicated that anchorage landslide had elevation amplification effect from bottom to top along with the landslide, and the acceleration response in crest was the strongest. Due to the spectrum characteristics of earthquake, acceleration response is different under different seismic waves. The anchorage landslide had an amplifying effect on lower frequency band and an attenuation function on higher frequency band. With the increase of loading amplitude, the acceleration response of anchorage landslide decreased first and then increased. For the same anchor, axial force distribution was nearly uniform; however, for the anchors at different elevation, axial force of anchors had a great difference, and the strain distribution of anchor body shows the "C"-type from bottom to top. The bottom anchor and the top anchor bear most of the loads. The research results could provide a reasonable foundation for the design of the pressure-type anchor under earthquake.
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