Theoretical and numerical analysis of flexural toppling failure in soft-hard interbedded anti-dip rock slopes
文献类型：期刊论文
| 作者 | Wang, Runqing; Zheng, Yun; Chen, Congxin; Zhang, Wei |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2023 |
| 卷号 | 312 |
| 关键词 | Rock slopes Soft -hard interbedded structure Flexural toppling Deformation compatibility method Limit equilibrium method |
| ISSN号 | 0013-7952 |
| 英文摘要 | Soft-hard interbedded structures are commonly found in anti-dip rock slopes and endow the slopes with special properties. In this work, a simple two-beam model was first used to discuss the possible failure modes of rock layers with different lithology. The exact failure sequence of rock layers depends on their tensile strengths, elastic moduli, and thicknesses. Then, based on the deformation compatibility of rock layers, a novel theoretical method called the DCM for assessing the stability of soft-hard interbedded anti-dip rock slopes was proposed. A centrifuge test and a numerical model were used to verify the feasibility of the DCM. The calculated critical glevel of 47 g for the centrifuge model and a safety factor of 0.96 for the numerical model agree well with the results of the centrifuge test (45 g) and numerical simulation (0.98). Moreover, the traditional limit equilibrium method (LEM) was also adopted to explore these two models. The calculated results of 68 g and 1.79 using the traditional LEM were found to be much larger than the validated values, with deviations of more than 50%. This finding implies that the traditional LEM is not suitable for assessing the stability of soft-hard interbedded anti-dip rock slopes. In addition, the failure evolution of toppling failure in soft-hard interbedded anti-dip rock slopes was investigated using numerical modelling. The results show that the soft and hard rock layers do not fail at the same time; the rock layers of one type of lithology are destabilized first, then the other rock layers begin to fail until the entire slope undergoes flexural toppling. |
| 学科主题 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000896773200001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34869]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Wang, Runqing,Zheng, Yun,Chen, Congxin,et al. Theoretical and numerical analysis of flexural toppling failure in soft-hard interbedded anti-dip rock slopes[J]. ENGINEERING GEOLOGY,2023,312. |
| APA | Wang, Runqing,Zheng, Yun,Chen, Congxin,&Zhang, Wei.(2023).Theoretical and numerical analysis of flexural toppling failure in soft-hard interbedded anti-dip rock slopes.ENGINEERING GEOLOGY,312. |
| MLA | Wang, Runqing,et al."Theoretical and numerical analysis of flexural toppling failure in soft-hard interbedded anti-dip rock slopes".ENGINEERING GEOLOGY 312(2023). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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