Dynamic analysis of anti-dip bedding rock slopes reinforced by pre-stressed cables using discrete element method

Zheng, Yun; Wang, Runqing; Chen, Congxin; Sun, Chaoyi; Ren, Zhanghao; Zhang, Wei

doi:10.1016/j.enganabound.2021.05.014

Cited by 19 publications

(10 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zhu et al [13] adopted the DEM to simulate the granular chute test and study the effect of low-frequency vibration on particle liquefaction. The dynamic response law and failure mechanism of reinforced anti-dip bedding rock slopes are studied by Zheng et al [14] using the DEM. Although the above mentioned structural dynamic response research using the DEM has achieved positive results, the artificial boundary has not been considered, and the continuous reflection and superposition of seismic waves are still in the model stage.…”

Section: Introductionmentioning

confidence: 99%

Calibration of Adjustment Coefficient of the Viscous Boundary in Particle Discrete Element Method Based on Water Cycle Algorithm

Gao²,

Cheng

et al. 2022

Water

View full text Add to dashboard Cite

The viscous boundary has a direct influence on the accuracy of structural dynamic response analysis, and the absorbing effect of the viscous boundary is controlled by the adjustment coefficient. Therefore, a calibration model of the viscous boundary’s adjustment coefficient based on the water cycle algorithm is established for the particle discrete element to improve the accuracy of dynamic response analysis. First, the traditional viscous boundary theory is utilized to realize the viscous boundary’s application method in the particle discrete element via programming. This avoids the reflection and superposition of seismic waves at the boundary and makes the structural dynamic response with the particle discrete element more real and accurate. Second, for the complex and time-consuming adjustment coefficients determination, a calibration model based on the water cycle algorithm and Latin hypercube sampling is established for the adjustment coefficients in the particle discrete element method. Finally, this calibration model is employed for the seismic response analysis of a rockfill slope, the maximum velocity of rock in this rockfill slope being about 1.30 times that of a seismic wave. Comparing the rockfill slope response with fixed and viscous boundaries, the calibration’s accuracy and the viscous boundary’s feasibility are demonstrated, further expanding the research and application of the particle discrete element method in dynamic response analysis.

show abstract

Section: Introductionmentioning

confidence: 99%

Calibration of Adjustment Coefficient of the Viscous Boundary in Particle Discrete Element Method Based on Water Cycle Algorithm

Gao²,

Cheng

et al. 2022

Water

View full text Add to dashboard Cite

show abstract

“…Besides, some scholars also used shaking table tests to explore the dynamic response characteristics of bedding, anti-dip, horizontal and homogeneous slopes, respectively (Liu et al 2013(Liu et al , 2014Li et al 2019c). In numerical simulation, researchers usually use FEM (Pelekis et Zheng et al 2021) and other software to analyze the peak acceleration and failure modes of slopes. Furthermore, previous research schemes mainly focused on the dynamic response characteristics of a single or two types of slopes failure modes, which lacked the systematic analysis of the dynamic response characteristics and wave propagation characteristics of various layered slopes.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation on seismic dynamic response characteristics of high-steep layered granite slopes via time-frequency analysis

Shi

Zhang

Song

et al. 2022

Preprint

View full text Add to dashboard Cite

The occurrence of geological structure and stratum lithology plays important roles in the seismic stability of complex slopes, which is also the difficult points of engineering construction. Four three-dimensional layered granite slope models with infinite boundary were modeling via finite element method (FEM). Seismic response and deformation characteristics of slopes are systematically studied through time-frequency domain. A frequency-domain analysis method of complex slopes is proposed including modal and spectrum conjoint analysis. Modal analysis can directly display the main vibration modes of slopes. The combination of modal and spectral analysis can clarify the inherent characteristics of slopes, and reveal the interaction mechanism between inherent frequency and dynamic characteristics of slopes. The results illustrate that structural faces have significant effects on the propagation characteristics of wave within rock mass, and complex refraction/reflection phenomena occur near these discontinuities, thus to different dynamic response characteristics in the slope. Layered slopes have apparent magnification effect of slope surface and altitude. Directions of seismic excitation and structural plane types affect the dynamic response of slopes. Horizontal wave mainly affects the middle and upper part of high-steep slope, while vertical wave has obvious influence on the slope crest. Additionally, Fourier spectral analysis shows that structural planes have filtering effects on the high-frequency waves. Combined with modal analysis, it further explains that high-frequency section of waves mainly triggers local deformation of slopes, while low-frequency component controls their overall deformation. Finally, instability regions and evolution process of different layered slopes were predicted based on time-frequency conjoint analysis.

show abstract

“…Combined with some advanced methods (the intelligence algorithm, LEM, UDEC, DDA, etc. ), researchers have found many valuable investigations on this failure mechanism (Fan, 2015;Zheng et al, 2020;Zheng et al, 2021a;Zheng et al, 2021b;Liu et al, 2021;Su et al, 2021) as well.…”

Section: Introductionmentioning

confidence: 99%

Stability assessment for hard anti-inclined bedded rock slopes using a limit equilibrium method

Diao²

2022

Front. Earth Sci.

View full text Add to dashboard Cite

The failure mechanism of hard anti-inclined bedded rock slopes with the possibility of undergoing flexural toppling is very complex so that it is difficult to effectively perform their stability assessment. In this study, an attempt was made to accurately predict the stability factor and the failure surface of such slopes: establishing a new failure zone model and developing a limit equilibrium method based on this model. In this model, the failure zones of such a slope were divided strictly according to the failure mechanisms of the rock layers. In the presented method, the failure surface was considered to be a bilinear-type surface as observed in field investigations and laboratory tests, and the non-dimensional parameter indicating the position of application of the interlayer force was revised by deriving the distribution and the equivalent substitution of interlayer force. Then, a comparative study on Yangtai slope was performed to prove the presented method, and the effect of the non-dimensional parameter on the stability was also investigated. The results reveal that the presented method can accurately determine the failure surface and precisely evaluate the slope stability factor. In addition, the presented method has higher predictive accuracy compared with other analytical methods. With the decrease of the non-dimensional parameter, the stability of the slope is reinforced, but the larger landslide with more serious damage effect will occur if the slope undergoes the overall failure.

show abstract

Dynamic analysis of anti-dip bedding rock slopes reinforced by pre-stressed cables using discrete element method

Cited by 19 publications

References 23 publications

Calibration of Adjustment Coefficient of the Viscous Boundary in Particle Discrete Element Method Based on Water Cycle Algorithm

Calibration of Adjustment Coefficient of the Viscous Boundary in Particle Discrete Element Method Based on Water Cycle Algorithm

Numerical investigation on seismic dynamic response characteristics of high-steep layered granite slopes via time-frequency analysis

Stability assessment for hard anti-inclined bedded rock slopes using a limit equilibrium method

Contact Info

Product

Resources

About