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Probabilistic seismic vulnerability assessment of aluminium alloy reticulated shells with consideration of uncertainty

机译：考虑不确定性的铝合金网壳概率地震易损性评估

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Single-layer aluminium alloy cylindrical shells are established using the powerful finite element (FE) software package ABAQUS. Furthermore, the probability distribution models of different random parameters in structural modelling are summarized. Forty seismic ground motion records are selected to consider the uncertainty of earthquakes. Sensitivity analysis of modelling parameters is conducted to determine the parameters with the greatest influence on seismic responses. The incremental dynamic analysis (IDA) method is performed on aluminium alloy cylindrical latticed shell structures with different structural parameters. After applying the damage index and structural performance levels of the latticed shells proposed in this paper, the probabilistic seismic demand model and probabilistic seismic capacity model are established. The seismic performance and the collapse capacity of different aluminium alloy cylindrical latticed shells are discussed based on the FE results. Furthermore, vulnerability curves are obtained according to the IDA results, which can be utilized to predict the failure probability and to evaluate the structural performance of aluminium alloy cylindrical latticed shells under different levels of earthquakes.
机译：使用功能强大的有限元（FE）软件包ABAQUS建立单层铝合金圆柱壳。此外，总结了结构建模中不同随机参数的概率分布模型。选择了40条地震地震动记录以考虑地震的不确定性。进行建模参数的敏感性分析，以确定对地震响应影响最大的参数。对具有不同结构参数的铝合金圆柱格子壳结构进行了增量动力分析（IDA）方法。在应用本文提出的格构壳体的损伤指标和结构性能水平后，建立了概率地震需求模型和概率地震承载力模型。基于有限元分析结果，讨论了不同铝合金圆柱格子壳的抗震性能和破坏能力。此外，根据IDA结果获得了易损性曲线，可用于预测在不同地震级别下铝合金圆柱格子壳的破坏概率并评估其结构性能。

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