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首页> 外文期刊>Bulletin of earthquake engineering >Seismic collapse assessment of deteriorating RC bridges under multiple hazards during their life-cycle
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Seismic collapse assessment of deteriorating RC bridges under multiple hazards during their life-cycle

机译：在其生命周期内多次危害下劣化RC桥的地震折叠评估

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摘要

Bridges serve essential roles in a state economy whose collapse leads to grave consequences with serious economic losses. Seismic loads and corrosive conditions cause their deterioration over time. In this paper, a comprehensive framework is developed using probabilistic fragility analysis and life-cycle assessment for the collapse assessment of deteriorating bridges under multi-hazard conditions including carbonation, corrosion, scour, and seismic loads. The proposed approach takes into account the combined effects of pier scour, corrosion, and carbonation on the seismic vulnerability of reinforced concrete bridge during its life-cycle for design and retrofit purposes. To achieve this goal, the collapse probability of the bridge due to such hazards is determined for a range of possible hazard intensities. Also, to make an engineering decision regarding different scenarios, the results of the life-cycle assessment are scored. Afterward, based on the cost of each scenario, a cost-benefit analysis is conducted. Finally, the proposed approach is represented using a river-crossing bridge as a case study.
机译：桥梁在国家经济中提供基本作用，其崩溃导致严重的经济损失导致严重后果。地震载荷和腐蚀条件导致它们随着时间的推移而恶化。本文使用概率脆弱分析和生命周期评估来开发了全面的框架，用于在多危害条件下的崩盘评估，包括碳酸化，腐蚀，冲刷和地震载荷。拟议的方法考虑了墩擦洗，腐蚀和碳酸化对其生命周期内钢筋混凝土桥的地震脆弱性的综合影响，用于设计和改造目的。为了实现这一目标，确定危险导致的桥梁的崩溃概率对于一系列可能的危险强度。此外，为了对不同情景进行工程决策，得分生命周期评估的结果。之后，根据每种情况的成本，进行成本效益分析。最后，所提出的方法是使用河流交叉桥作为案例研究来表示的。

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