Extension of the Discontinuous Deformation Analysis Method to Simulate Seismic Response of a Large Rock Cavern Complex

doi:10.1061/(ASCE)GM.1943-5622.0000712

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

	Extension of the Discontinuous Deformation Analysis Method to Simulate Seismic Response of a Large Rock Cavern Complex
	Leng, Xianlun; Chen, Jian; Fu, Xiaodong; Sheng, Qian; Zhang, Yonghui
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2017
卷号	17 期号:5 页码:-
关键词	Discontinuous deformation analysis (DDA) method Rock cavern complex Modeling Input method Seismic response
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0000712
英文摘要	The discontinuous deformation analysis (DDA) method calculates large deformations and discontinuous problems using time-step solving and provides an effective tool for analyzing the seismic response of rock mass engineering. In this paper, extensions of the DDA method to simulate the seismic response of a large rock cavern complex are carried out. First, applicability of the existing seismic input methods, including the multiblock Newmark method, large mass method, and large stiffness method, are discussed. Second, considering the characteristics of the seismic response of a large rock cavern complex, a new seismic DDA model that includes a coupling model and a force-input method is presented. Last, the extended DDA method is used for a case study. Simulations of the quasi-static and seismic dynamic stages for the large rock cavern complex of the Dagangshan hydropower station in southwest China are carried out. Considering the stress and displacement distributions in the quasi-static stage, the most unfavorable movable blocks are found. In the seismic dynamic stage, serious damage to the main machine building and local damage of the downstream sidewall of the main transformer chamber are observed, and the seismic response of the large rock cavern complex can be visually divided into four phases, which show that failures of the most unfavorable movable blocks are an early sign of collapse of a rock cavern complex. (C) 2016 American Society of Civil Engineers.
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000398536900011
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4045]
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	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Leng, Xianlun,Chen, Jian,Fu, Xiaodong,et al. Extension of the Discontinuous Deformation Analysis Method to Simulate Seismic Response of a Large Rock Cavern Complex[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2017,17(5):-.
APA	Leng, Xianlun,Chen, Jian,Fu, Xiaodong,Sheng, Qian,&Zhang, Yonghui.(2017).Extension of the Discontinuous Deformation Analysis Method to Simulate Seismic Response of a Large Rock Cavern Complex.INTERNATIONAL JOURNAL OF GEOMECHANICS,17(5),-.
MLA	Leng, Xianlun,et al."Extension of the Discontinuous Deformation Analysis Method to Simulate Seismic Response of a Large Rock Cavern Complex".INTERNATIONAL JOURNAL OF GEOMECHANICS 17.5(2017):-.