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Implementation and verification of centrifugal shaking table model test of landslide reinforced by anchored stabilizing piles
Anchored stabilizing piles are widely used to reinforce the seismic landslides in the earthquake prone areas, but it is very difficult to reveal its reinforcement mechanism using centrifugal shaking table tests. In this paper, based on the design parameters of the prototype project of the Hanyuan Beihoushan landslide reinforced by anchored stabilizing piles, the geometric model of the centrifugal shaking table test is extracted. And then, fully considering the performance index of ZJU-400 geotechnical centrifuge, the design scheme of the centrifugal shaking table test is established, and the layout positions of different types of sensors are given. And, the manufacturing process of the test model is also discussed in detail. Finally, the reliability of the test design scheme is verified by comparing the theoretical bending moment of the pile with the measured value and analyzing the seismic response time history data of the pile-anchor-landslide system. The results show that the DUXSEAL material can greatly absorb the reflected waves from the rigid boundary; the distribution of measured bending moment with elevation is basically consistent with the theoretical calculation results, but the data are slightly different due to soil arching effect and super-gravity; the sheet micro axial force meter developed independently can effectively obtain the dynamic time history of the anchor axial force. The model design and manufacturing process introduced in this paper can provide technical support for the further centrifugal shaking table tests of anchored stabilizing piles.
Implementation and verification of centrifugal shaking table model test of landslide reinforced by anchored stabilizing piles
Anchored stabilizing piles are widely used to reinforce the seismic landslides in the earthquake prone areas, but it is very difficult to reveal its reinforcement mechanism using centrifugal shaking table tests. In this paper, based on the design parameters of the prototype project of the Hanyuan Beihoushan landslide reinforced by anchored stabilizing piles, the geometric model of the centrifugal shaking table test is extracted. And then, fully considering the performance index of ZJU-400 geotechnical centrifuge, the design scheme of the centrifugal shaking table test is established, and the layout positions of different types of sensors are given. And, the manufacturing process of the test model is also discussed in detail. Finally, the reliability of the test design scheme is verified by comparing the theoretical bending moment of the pile with the measured value and analyzing the seismic response time history data of the pile-anchor-landslide system. The results show that the DUXSEAL material can greatly absorb the reflected waves from the rigid boundary; the distribution of measured bending moment with elevation is basically consistent with the theoretical calculation results, but the data are slightly different due to soil arching effect and super-gravity; the sheet micro axial force meter developed independently can effectively obtain the dynamic time history of the anchor axial force. The model design and manufacturing process introduced in this paper can provide technical support for the further centrifugal shaking table tests of anchored stabilizing piles.
Implementation and verification of centrifugal shaking table model test of landslide reinforced by anchored stabilizing piles
Zheng, Tong (author) / Wang, Yu (author)
2021-11-06
742976 byte
Conference paper
Electronic Resource
English
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