DAMAGE MODEL OF ANTI-SLIDE PILE BASED ON ENERGY LOSS AND ITS APPLICATION

ZHOU Yuntao; SHI Shengwei; CAI Qiang; ZHANG Yong; LIANG Jiong; CHENG Yingjian

doi:10.12090/j.issn.1006-6616.2019.25.06.094

Volume 25 Issue 6

Dec. 2019

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ZHOU Yuntao, SHI Shengwei, CAI Qiang, et al., 2019. DAMAGE MODEL OF ANTI-SLIDE PILE BASED ON ENERGY LOSS AND ITS APPLICATION. Journal of Geomechanics, 25 (6): 1107-1115. DOI: 10.12090/j.issn.1006-6616.2019.25.06.094

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DAMAGE MODEL OF ANTI-SLIDE PILE BASED ON ENERGY LOSS AND ITS APPLICATION

doi: 10.12090/j.issn.1006-6616.2019.25.06.094

ZHOU Yuntao^{1, 2
,},
SHI Shengwei^{1, 2},
CAI Qiang^{1, 2},
ZHANG Yong^{1, 2},
LIANG Jiong^{1, 2},
CHENG Yingjian^{1, 2}

1.
Institute of Exploration Technology, CAGS, Chengdu 611734, Sichuan, China
2.
Technical Center for Geological Hazard Prevention and Control, CGS, Chengdu 611734, Sichuan, China

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Received: 2018-10-24
Revised: 2019-10-31
Published: 2019-12-31

Abstract

Abstract

The process of anti-slide pile bearing load is accompanied by damage accumulation of pile structure. For the purpose of knowing the condition of damage evolution of anti-slide pile, this paper induced damage factor expressions varying with strain based on Najar damage theory, and established the concrete damage model of anti-slide pile under the action of tension and pressure loads. This damage model was embedded in the built-in concrete damage model of Abaqus/CAE program, and then this paper drew the following conclusions by analyzing the damage condition of anti-slide pile of 1# landslide in Erlang Mountain:the simulated horizontal displacement was 30.3 cm by using the damage model of anti-slide pile under the action of tension and pressure loads, which was consistent with the figure of crack width observed on site, concluding that the increased landslide load was the immediate cause to the large deformation of 1# landslide in Erlang Mountain; the value of compression damage was less in the process of the large displacement happened to the anti-slide pile and no compressive damage occurred to the pile structure; but tensile damage was severe at the sliding surface near the landslide during the large displacement occurred to the anti-slide pile and tensile damage occurred on the pile, with the damage zone reaching the 3/4 of the cross-sectional area, which is an important position that requires attention to the restoration of the anti-slide pile.
- damage model,
- damage factor,
- constitutive model,
- Abaqus program,
- anti-slide pile,
- 1# landslide in Erlang Mountain

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DAMAGE MODEL OF ANTI-SLIDE PILE BASED ON ENERGY LOSS AND ITS APPLICATION

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DAMAGE MODEL OF ANTI-SLIDE PILE BASED ON ENERGY LOSS AND ITS APPLICATION

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