DOI: 10.1007/s11069-020-03969-y
论文题名: Probabilistic modeling of disrupted infrastructures due to fallen trees subjected to extreme winds in urban community
作者: Hou G. ; Chen S.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 102, 期: 3 起始页码: 1323
结束页码: 1350
语种: 英语
中文关键词: Fragility curves
; Infrastructure disruptions
; Power
; Probabilistic
; Traffic
; Trees
; Windthrow
英文关键词: damage mechanics
; extreme event
; finite element method
; hazard management
; infrastructure
; meteorological hazard
; modeling
; numerical model
; probability
; urban area
; wind velocity
; Colorado
; Fort Collins
; United States
英文摘要: Tree failures due to strong winds in urban areas cause extensive direct and indirect economic and environmental loss, including disrupting adjacent infrastructures, such as buildings, underground pipelines, roads and overhead powerlines. To effectively improve the resilience of a community subjected to extreme wind events through prevention, response and recovery, it becomes critical to rationally assess the risks of wind-induced tree failures and the disruptions to different types of infrastructures due to fallen trees. An integrated probabilistic methodology to model the performance of disrupted infrastructures is developed for fallen urban trees subjected to extreme winds in a typical community. Firstly, the finite element modeling of the trees subjected to wind loads is conducted and based on which the windthrow fragility curves of several typical urban tree species are developed. Secondly, a probabilistic framework is developed based on the fragility results to characterize the disrupted scenarios and further predict the disruption probability of some critical infrastructures due to fallen trees. The matrix-based system reliability (MSR) method is introduced to assess the transportation network performance. The proposed framework and MSR method are demonstrated in detail on studying the overhead powerline and transportation network of a small urban community in the city of Fort Collins, Colorado. In the demonstrative example, the probabilities of powerline disruption, road closure, and origin–destination disconnection and travel time reliability under different wind conditions are predicted. Finally, mitigation efforts such as crown thinning of trees are discussed to reduce possible risks of disrupting the infrastructures. © 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/168526
Appears in Collections: 气候变化与战略
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作者单位: Department of Civil and Environmental Engineering, Colorado State University, Fort Collins, CO 80523, United States
Recommended Citation:
Hou G.,Chen S.. Probabilistic modeling of disrupted infrastructures due to fallen trees subjected to extreme winds in urban community[J]. Natural Hazards,2020-01-01,102(3)