Seismic stability analysis of a rock block using the block theory and Newmark method

doi:10.1002/nag.2903

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Seismic stability analysis of a rock block using the block theory and Newmark method
	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
	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
内容类型	期刊论文
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
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.