Mechanism of Deformation Failure of Anti-slide Piles in Debris Landslide under Earthquake Action

SUN Feng; KONG Ji-ming; JIA Chao; XU Xing-ming

doi:10.11988/ckyyb.20160290

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Journal of Changjiang River Scientific Research Institute ›› 2017, Vol. 34 ›› Issue (7) : 77-81. DOI: 10.11988/ckyyb.20160290

ROCK-SOIL ENGINEERING

Mechanism of Deformation Failure of Anti-slide Piles in Debris Landslide under Earthquake Action

SUN Feng¹, KONG Ji-ming², JIA Chao³, XU Xing-ming⁴

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Abstract

Physical model test with similar materials for Nanwen debris landslide was conducted to reveal the deformation failure mode of debris landslide under earthquake load. The displacement of anti-slide piles of different depths and the deformations of slope under earthquake load were analyzed. Furthermore, a non-linear finite element model of elastic-plastic dynamic consolidation of large strain was built to verify the deformation failure of debris landslide. The dynamic displacement of pile top and the deformation response of pile of varying depth were analyzed. The embedded depth of anti-slide piles should be 0.29-0.31 times the pile length for Nanwen debris landslide. The model design method and research idea could offer reference for related researches.

Key words

earthquake action / debris landslide / anti-slide piles / deformation and failure / anchorage depth

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SUN Feng, KONG Ji-ming, JIA Chao, XU Xing-ming. Mechanism of Deformation Failure of Anti-slide Piles in Debris Landslide under Earthquake Action[J]. Journal of Changjiang River Scientific Research Institute. 2017, 34(7): 77-81 https://doi.org/10.11988/ckyyb.20160290

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