An algorithm in generalized coordinate system and its application to reliability analysis of seismic slope stability of high rockfill dams

Wu, Zhenyu; Chen, Jiankang; Li, Yanling; Peng, Liang

doi:10.1016/j.enggeo.2015.01.019

Cited by 17 publications

(2 citation statements)

References 23 publications

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“…In addition, the anti-sliding stability of the dam slope was studied by Zhou Jianfeng et al 21 , Wei Kuangmin et al 22 , and Lv Qingfeng et al 23 via linear and nonlinear strength parameter methods. Wu Zhenyu et al 24 , 25 discussed some problems on the reliability analysis of dam slope stability with nonlinear strength index, and pointed out that the influence of strength index distribution on the reliability analysis of dam slope stability cannot be ignored.…”

Section: Introductionmentioning

confidence: 99%

Research on the slip deformation characteristics and improvement measures of concrete-faced rockfill dams on dam foundations with large dip angles

Gao,

Han,

Han

et al. 2024

Sci Rep

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The pumped storage power station (PSPS) is an important measure to achieve the strategic goal of “dual carbon”. As one of the preferred types for the upper reservoir dams of PSPSs, the concrete-faced rockfill dam (CFRD) often has a dam foundation on a steep transverse slop and is prone to produce slip deformation along the slope, resulting in poor anti-sliding stability of the dam slope. It is dangerous for the operation safety of PSPSs. Therefore, the slip deformation of CFRDs on dam foundations with large dip angles is investigated. The mechanism for the initiation of slip deformation is revealed. The design measures of physical mechanic and geometric structure are proposed to reduce slip deformation. The results show that the larger sliding forces and smaller anti-sliding forces are the fundamental reasons that CFRDs on dam foundations with large dip angles are prone to produce slip deformation. The larger the dip angle of the dam foundation, the larger the slip deformation of the dam body and face slab, and the smaller the safety factor of the dam slope. When the dip angle of the dam foundation is greater than 15°, the safety factor of the dam slope is less than the minimum value of 1.5 required by codes. The addition of pressure slopes can effectively reduce the slip deformation of the dam body or face slab and significantly improve the anti-sliding stability of the dam slope. When the height or width of the pressure slope platform is greater and the cohesion or internal friction angle of the pressure slope is larger, the slip deformations of the dam body and face slab are smaller, and the safety factor of the dam slope is greater. It is recommended that the height and width of the pressure slope platform be 1/2 times the maximum height of the main dam, and the density (cohesion and internal friction angle) of the pressure slope be equivalent to that of the main dam’s rockfill material. The research results can provide theoretical and technical support for the design and construction of CFRDs for the upper reservoir of PSPSs.

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Section: Introductionmentioning

confidence: 99%

Research on the slip deformation characteristics and improvement measures of concrete-faced rockfill dams on dam foundations with large dip angles

Gao,

Han,

Han

et al. 2024

Sci Rep

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“…In recent years, numerous rural professional households have built houses with exible layouts. Some have constructed shops, restaurants, and other commercial establishments along town and village streets, with residential spaces on upper oors [9] , as illustrated in Fig. 2.…”

Section: Introductionmentioning

confidence: 99%

Research on seismic performance and improvement of rural self-built houses

Zhang,

Liu,

Sun

et al. 2024

Preprint

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The traditional self-built houses with a bottom frame structure, still prevalent in rural areas, pose a significant risk of damage during earthquakes due to the structural weaknesses of the first and second floors. Despite this vulnerability, many residents continue to construct such houses due to their structural convenience. This study focuses on a rural self-built house with a frame bottom layer and three masonry upper layers. By subjecting the structure to seven seismic waves, we analyze the seismic responses of traditional seismic structures, bottom shear wall structures, foundation isolation structures, and storey separation structures. A comparative assessment of the seismic performance of these four structures under earthquake conditions is conducted. The study confirms the advantages and feasibility of implementing base shear wall and isolation technologies in rural self-built bottom frame structures. The findings reveal that bottom shear walls can mitigate seismic damage to some extent. Additionally, the implementation of isolation technology can effectively extend the structure's period and prevent site-specific vulnerabilities. When foundation isolation is applied, structural acceleration, interstory shear, interstory displacement, and base shear can be reduced from 18.261–32.098% of those observed in traditional seismic structures, indicating a significant improvement in seismic resilience. Moreover, the seismic performance of storey separation surpasses that of bottom shear walls, while foundation isolation outperforms both storey separation and bottom shear walls in terms of seismic performance.

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Numerical Simulation and Application of Slope Stochastic Seismic Response Analysis

Huang

Xiong

Zhao

2022

Slope Stochastic Dynamics

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An algorithm in generalized coordinate system and its application to reliability analysis of seismic slope stability of high rockfill dams

Cited by 17 publications

References 23 publications

Research on the slip deformation characteristics and improvement measures of concrete-faced rockfill dams on dam foundations with large dip angles

Research on the slip deformation characteristics and improvement measures of concrete-faced rockfill dams on dam foundations with large dip angles

Research on seismic performance and improvement of rural self-built houses

Numerical Simulation and Application of Slope Stochastic Seismic Response Analysis

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