Article
Engineering, Environmental
Weijian Sun, Guoxin Wang, Leilei Zhang
Summary: A new criterion for slope stability evaluation based on residual displacement increment is proposed in this paper, avoiding the randomness and subjectivity in selecting characteristic points and judging displacement mutation points. This criterion provides a more accurate and reliable method for assessing slope stability.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Engineering, Mechanical
Jiaqiang Zou, Fangxin Yang, Weihai Yuan, Yihui Liu, Aihua Liu, Wei Zhang
Summary: From the perspective of energy, the change of kinetic energy during slope failure is significant. This paper proposes a new failure criterion based on the change of occurrence time of peak kinetic energy, and verifies its applicability and accuracy through experiments on homogeneous and inhomogeneous slopes. The results show that the evolution of kinetic energy can intuitively reveal the sudden change of occurrence time of peak kinetic energy, which can be used to objectively determine the factor of safety of the slope. This criterion can be further applied in practical engineering to determine a more accurate factor of safety of slopes.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Computer Science, Interdisciplinary Applications
Haibin Wang, Yongtao Yang, Guanhua Sun, Hong Zheng
Summary: A nonlinear strength-reduction numerical manifold method (NSRNMM) using a generalized Hoek-Brown (GHB) criterion is proposed in this study to investigate rock slope stability. Implementing two equivalent Mohr-Coulomb (MC) criteria from the GHB criterion, the NSRNMM can accurately calculate the safety factor of rock slopes. Results show that the NSRNMM with the average equivalent MC criterion predicts a more conservative safety factor compared to the instantaneous equivalent MC criterion.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Engineering, Environmental
Chengya Hua, Leihua Yao, Chenguang Song, Qihang Ni
Summary: A new criterion, the variational criterion, is proposed in this study to avoid human error in instability criteria and provide a unified and definite index for judging slope instability.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Yunkang Rao, Tao Yang, Huailin Chen, Yijun Wu, Bokai Li, Zhichao Yu, Zhe Zhang, Haojiang Ding
Summary: The study aims to develop a model test method for simulating the decrease in slope soil strength and apply it to an excavation slope. The test results show that the developed method enables the observation of the complete failure process caused by the decrease in slope strength, and the results generally agree with other methods.
Article
Chemistry, Physical
Yifan Chen, Yizhou Chen, Hang Lin, Huihua Hu
Summary: In this study, the Hoek-Brown criterion was combined with a nonlinear reduction technique for slope stability evaluation. The relationships that should be satisfied by each parameter of the critical slope were derived, and the critical curve of the slope was obtained. The k-means algorithm was employed to search the potential sliding surface, and the safety factor was calculated as the ratio of sliding resistance to sliding force. The calculated safety factors showed better efficacy compared to other methods.
Article
Engineering, Geological
Yongtao Yang, Yang Xia, Hong Zheng, Zhijun Liu
Summary: A 3D nonlinear strength reduction numerical manifold method (3D-NSRNMM) based on the Generalized Hoek-Brown failure criterion is proposed to analyze the stability of rock slopes, considering the nonlinear failure property of rock masses. The study reveals that boundary conditions significantly influence the safety factor and failure mode of rock slopes in 3D analysis, with 2D analysis being more conservative. Additionally, safety factors based on instantaneous equivalent Mohr-Coulomb parameters are similar to those based on average equivalent parameters, but the failure modes differ slightly.
ENGINEERING GEOLOGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Lei Sun, Quansheng Liu, Aly Abdelaziz, Xuhai Tang, Giovanni Grasselli
Summary: This paper presents a novel approach (Y-slope) to simulate the entire failure process of rock slopes, including initiation, transport, and deposition. The method can not only evaluate the stability state of the slope and obtain the critical failure surface, but also accurately simulate the slope deformation, failure surface evolution, block transport, and deposition. The importance of existing discontinuities in slope stability and failure mechanism is also highlighted.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Mechanical
Ting Zhang, Jian-Zhi Zhang
Summary: This paper proposes a method that combines the OSB-PD plastic model with the D-P criterion to numerically reproduce localized deformation and locate the critical failure surface of slopes. The strength reduction method is used to estimate the critical failure surface and factor of safety.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Geological
Yongtao Yang, Feng Liu, Wenan Wu
Summary: A 3D stability analysis is crucial for slope designs, and the proposed ISR3DNMM-GPS method can be used to calculate the factor of safety and determine the 3D failure surface. The numerical model provides reasonable results for analyzing the stability of 3D slopes.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Computer Science, Interdisciplinary Applications
Z. L. Zhang, X. L. Yang
Summary: This paper develops a unified analytical framework to consider the local and global instability of a compound slope and provides a more rigorous solution for stability assessment. Through a hybrid optimization of the objective function, the critical safety factor and slip surface can be obtained. The results show good capability in implementing stability analysis and reveal the influence of slope geometry, soil strength, and external excitation on slope stability and failure pattern.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Engineering, Geological
Enrico Soranzo, Carlotta Guardiani, Yiru Chen, Yunteng Wang, Wei Wu
Summary: In this study, a convolutional neural network is used to reduce the computational effort in predicting the stability of slopes with complex soil properties. The factor of safety of 600 slopes with different inclination and soil properties is calculated using the strength reduction method. The trained convolutional neural network is then validated, and the augmentation of the dataset is demonstrated to enhance its capability and prevent overfitting.
Article
Engineering, Civil
Shiguo Xiao, Shaohong Li
Summary: The failure criteria have a significant impact on the safety factor of slope stability, and the classical simplification models have limited applicability. In this study, a machine learning-based analysis method was proposed to establish a complex nonlinear failure criterion with higher fitting precision. The proposed method can be used to calculate the safety factor of three-dimensional slope stability.
FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
(2022)
Article
Engineering, Civil
Chaoqun Hou, Rongjian Zhang, Yongxin Li, Zhibin Sun, Biao Zhang
Summary: In this study, the stability assessment of soil slope with known geometric boundary and seismic effects was evaluated using the variational method incorporated into the kinematic approach of limit analysis. A rotational failure mechanism was used to describe the sliding mode of slopes, and computational schemes were proposed to calculate safety factors. The validity of the approach was demonstrated through comparison with previous works, and a parametric study was conducted to further reveal the relationships among the four types of safety factors.
KSCE JOURNAL OF CIVIL ENGINEERING
(2021)
Article
Engineering, Geological
Quan Chen, Bing Bai, Haibin Wang, Xiaochun Li
Summary: The double reduction method (DRM) is a method used to evaluate slope stability by weakening the strength parameters and using different reduction coefficients. Dissipated energy is used to measure the degree of material damage and release of anti-sliding force. Different reduction coefficients result in different dissipated energies.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2021)
Article
Construction & Building Technology
Xinrong Liu, Yongquan Liu, Wanbo Qu, Yiliang Tu
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2016)
Article
Engineering, Civil
Sui Wang, Zuliang Zhong, Xinrong Liu, Yiliang Tu
KSCE JOURNAL OF CIVIL ENGINEERING
(2019)
Article
Engineering, Geological
Xinrong Liu, Yafeng Han, Dongliang Li, Yiliang Tu, Zhiyun Deng, Chuntao Yu, Xiangchao Wu
ENGINEERING GEOLOGY
(2019)
Article
Construction & Building Technology
Chao Li, Zuliang Zhong, Xinrong Liu, Yiliang Tu, Guannan He
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2019)
Article
Environmental Sciences
Ya-feng Han, Xin-rong Liu, Erdi Abi, Yi-liang Tu, Bin Xu, Xiao-han Zhou, Zhi-yun Deng, Zhong-hao Wang
Summary: This study investigates the effects of adding anti-pull ties (APTs) on the stability of shallow tunnel-type anchorages (TTAs) in soft rock. The results demonstrate that APTs can increase the bearing capacity of TTAs, and the bearing capacity is influenced by the dimensions of the APTs.
JOURNAL OF MOUNTAIN SCIENCE
(2023)
