RESEARCH ARTICLE
Complex Deposit Slope Excavation Deformation Mechanism and Seismic Reinforcement Effect Evaluation
Yin Dong1, *, Li Anrun2
Article Information
Identifiers and Pagination:
Year: 2024Volume: 18
E-location ID: e18741495295466
Publisher ID: e18741495295466
DOI: 10.2174/0118741495295466240318110658
Article History:
Received Date: 28/11/2023Revision Received Date: 02/02/2024
Acceptance Date: 09/02/2024
Electronic publication date: 22/04/2024
Collection year: 2024
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
Background
To further investigate the excavation deformation mechanism and remedial strategies for slope reinforcement in the southwest mountain area, the Baihetan-Jiangsu (Zhejiang) UHV transmission project deposit slope deformation reinforcement was used as a case study.
Methods
Deep displacement monitoring, on-site testing, and FLAC3D numerical simulation techniques were employed. The assessment of the deposit slope excavation deformation mechanism and the effectiveness of seismic reinforcement for different design options and pile parameters are conducted while analyzing the seismic reinforcement mechanism.
Results and Discussions
The results showed that (1) The deposit slope composed of “multi-genetic type soil” in the converter station is prone to deformation, where the dominant instability mode is “traction creep and tension failure mode.” (2) Both circular and rectangular anti-slide piles significantly reduce the amount of slope body deformation; employing circular anti-slide piles for addressing this type of deposit slope provides enhanced anti-slide retention and economic benefits. (3) Under the influence of an earthquake, the shear force and bending moment of the anti-slide pile first increase and then decrease with the increase of seismic intensity.
Conclusion
The distribution law of shear force and bending moment in a pile should be considered comprehensively in slope support design.