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Multi-hazard resilience assessment framework for prefabricated underground stations with a large-span roof structure
Tunnelling and Underground Space Technology ( IF 6.9 ) Pub Date : 2022-09-23 , DOI: 10.1016/j.tust.2022.104750
Tong Qiu , Xiangsheng Chen , Kunyang Chen , Dong Su , Jun Shen , Lei Wang , Zhenji Zheng

Prefabricated underground stations (PUSs) have been gradually applied as a new approach to urban low-carbon development; however, safe service for the city over the entire PUS life cycle remains a crucial issue. This study therefore investigates the resilience of PUSs with a large-span roof structure in multi-hazard urban environments. A joint vulnerability function is established to represent the PUS physical resilience, and a restorability function is established to represent the local community resilience. The physical resilience and community resilience are integrated to construct a PUS resilience assessment framework (PUS-RAF). The results indicates that: (1) the vulnerability function, experiment and FEA jointly present the PUS assembled joints' contact failure mode; (2) multi-hazard resilience assessment reveals the inherent sensitivity of PUS schemes (3) PUS-RAF predicts a joint scheme highly inclusive of multi-hazard factor; (4) the final PUS scheme accommodates the engineering and community. The PUS-RAF thus provides a practical assessment tool and application value for PUS resilience in multi-hazard environment.



中文翻译:

大跨度屋盖结构装配式地下车站多灾种弹性评价框架

装配式地铁站(PUS)逐渐成为城市低碳发展的新途径;然而,在整个 PUS 生命周期内为城市提供安全服务仍然是一个关键问题。因此,本研究调查了具有大跨度屋顶结构的 PUS 在多灾种城市环境中的弹性。建立联合脆弱性函数来表示 PUS 的物理弹性,并建立可恢复性函数来表示当地社区的弹性。综合身体复原力和社区复原力,构建 PUS 复原力评估框架(PUS-RAF)。结果表明:(1)脆弱性函数、实验和有限元分析共同呈现了PUS组装接头的接触失效模式;(2) 多灾种弹性评估揭示了 PUS 方案的内在敏感性 (3) PUS-RAF 预测了一个高度包容多灾种因素的联合方案;(4) 最终的 PUS 方案适应工程和社区。因此,PUS-RAF 为 PUS 在多灾种环境中的弹性提供了实用的评估工具和应用价值。

更新日期:2022-09-23
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