DOI: 10.1007/s11069-020-04451-5
论文题名: Effect of correlated random fields on nonlinear dynamic responses of gravity dam
作者: Li Z. ; Wu Z. ; Chen J. ; Lu X. ; Pei L. ; Chen C.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期: 1 起始页码: 79
结束页码: 96
语种: 英语
中文关键词: Correlated random fields
; Gravity dams
; Nonlinear dynamic analysis
; Seismic cracking
; Statistical analysis
英文关键词: correlation
; cracking (fracture)
; dynamic response
; gravity dam
; nonlinearity
; risk assessment
; seismic design
; statistical analysis
英文摘要: Uncertainty will inevitably be introduced into the structural analysis, while randomness is an important manifestation of uncertainty. Based on the random field theory, the correlated random fields of the Koyna gravity dam were realized, and the influence of the randomness of material parameters on the nonlinear responses of the gravity dam was investigated. A concrete continuum crack model was employed to describe the nonlinear mechanical behavior of gravity dams under static and dynamic loads. To avoid the contingency caused by the initial random samples, the comparisons of the nonlinear dynamic responses of the dam are based on the statistical analysis of a large number of random fields. The parameter sensitivity analysis is first implemented, and then, the nonlinear responses of the proposed correlated random field model and the conventional random variable-based model are comprehensively compared. The analysis showed that the randomness and spatial correlation of materials would affect the seismic performance of gravity dams, which should be considered in structural design and seismic risk analysis. © 2021, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169165
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, China; College of Hydraulic and Hydroelectric Engineering, Sichuan University, No. 24 South Section 1, Yihuan Road, Chengdu, China
Recommended Citation:
Li Z.,Wu Z.,Chen J.,et al. Effect of correlated random fields on nonlinear dynamic responses of gravity dam[J]. Natural Hazards,2021-01-01,106(1)