Seismic stability analysis of a rock block using the block theory and Newmark method
文献类型：期刊论文
| 作者 | Fu, Xiaodong; Sheng, Qian; Tang, Hua; Chen, Jian; Du, Yuxiang; Zhang, Zhenping; Mei, Hongru |
| 刊名 | INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
 |
| 出版日期 | 2019 |
| 卷号 | 43期号:7页码:1392-1409 |
| 关键词 | block theory Newmark method rock block safety factor and displacement seismic dynamic analysis |
| ISSN号 | 0363-9061 |
| DOI | 10.1002/nag.2903 |
| 英文摘要 | Seismic stability analysis of a rock block is an important issue in the field of rock mechanics and rock engineering. To solve this problem, the block theory and the Newmark method are combined, and a general method for seismic response of a rock block is introduced. First, the formation method of a three-dimensional rock block, which includes establishing a topological relationship among the block-polygon face-edge-vertex and dividing a complex block into convex subblocks, is presented, and the simplex integration method is employed to calculate the volume of a rock block and the areas of the polygonal faces. Second, the assumptions and algorithms of the general method for seismic response of a rock block are detailed. The dynamic analysis is carried out in time step. In each time step, the key technologies including analysis of the seismic force and motion mode, trial of the incremental displacement, check for the block entrance, and update of the motion parameters are performed in order. Last, two verification examples and three application examples including a wedge, a rock block of slope, and a combined rock block are used to analyze the correctness and practicality of the general method. The results show that, for a given ground motion record, the Newmark program can effectively simulate the dynamic response process of the motion mode, velocity, and safety factor of the rock block, and the permanent displacement under the earthquake action is obtained, which provides a quantitative parameter to evaluate the dynamic stability of a rock block. |
| WOS研究方向 | Engineering ; Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000463025000003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14990]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Hubei Univ Technol, Sch Civil Engn Architecture & Environm, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fu, Xiaodong,Sheng, Qian,Tang, Hua,et al. Seismic stability analysis of a rock block using the block theory and Newmark method[J]. INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,2019,43(7):1392-1409. |
| APA | Fu, Xiaodong.,Sheng, Qian.,Tang, Hua.,Chen, Jian.,Du, Yuxiang.,...&Mei, Hongru.(2019).Seismic stability analysis of a rock block using the block theory and Newmark method.INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,43(7),1392-1409. |
| MLA | Fu, Xiaodong,et al."Seismic stability analysis of a rock block using the block theory and Newmark method".INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 43.7(2019):1392-1409. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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