DOI: 10.1007/s11069-020-04344-7
论文题名: Numerical investigation on seismic behaviour of aged concrete gravity dams to near source and far source ground motions
作者: Gorai S. ; Maity D.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 1 起始页码: 943
结束页码: 966
语种: 英语
中文关键词: Dam-reservoir system
; Degradation of concrete
; Finite element method
; Influence of sediment depth
; Near source and far source ground motions
; Seismic analysis
英文关键词: concrete structure
; finite element method
; gravity dam
; ground motion
; numerical method
; seismic response
英文摘要: This study presents a numerical investigation on the seismic behaviour of aged concrete gravity dams under near source and far source ground motions. Two-dimensional formulation of a concrete gravity dam is carried out implementing the finite element technique, considering full reservoir and rigid base condition. Degradation of concrete properties due to hydro-chemo-mechanical effects and the influence of sediment layers are taken into account to calculate the response of the dam-reservoir coupled system at different ages. Two near source and far source ground motions from real earthquake events are selected for time-history analysis. Seismic performance evaluation is also carried out to assess the probable damage level of the dam. The outcomes of this study show the variation of seismic response of the dam over the ages and the necessity of considering the aging effect, e.g. degradation of concrete and influence of sediment layers, in the inspection of seismic safety issues of concrete gravity dam. This study also reveals the critical effect of near source ground motions on concrete gravity dams at later ages. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169045
Appears in Collections: 气候变化与战略
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作者单位: Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India
Recommended Citation:
Gorai S.,Maity D.. Numerical investigation on seismic behaviour of aged concrete gravity dams to near source and far source ground motions[J]. Natural Hazards,2021-01-01,105(1)