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基于人工神经网络的城市桥梁震害评估方法

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Keywords: 城市桥梁,震害评估,神经网络,汶川地震,桥梁震害

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Abstract:

为了使已有的桥梁震害评估方法适用于城市立交桥和高架桥,将桥梁结构是否规则考虑为评估模型的一项输入参数,并剔除了以往桥梁震害评估方法中不合理的影响因素以提高所提方法的可操作性。基于BP神经网络算法,以唐山地震和汶川地震中收集的54座梁式桥的震害资料作为网络训练样本,建立了梁式桥震害评估神经网络模型;通过讨论神经网络模型的泛化能力,得到了较满意的结果,表明该方法具有一定的准确度,可以应用于城市桥梁震害评估工作。

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