曹辉,王贤强,沈浩,焦峪波

• 1:苏交科集团股份有限公司
• 2:北京工业大学城市与工程安全减灾教育部重点实验室

摘要(Abstract)：

为了解决人为主观因素和指标权重不确定性对桥梁安全性评估的影响,基于模糊聚类理论,提出了一种适用于钢筋混凝土主梁结构的无监督式安全状态评估方法。首先,构建了钢筋混凝土主梁结构安全性评估指标体系,以典型桥梁的检测数据为聚类样本,基于F统计量计算,确定了聚类样本的最佳分类。其次,将同一类桥梁检测指标均值作为该类别的中心,通过待评估桥梁检测指标数据与类别中心的模糊贴近度计算,实现该桥梁的安全性评价。以长春赛德大桥为实体工程,针对评价指标对结构安全性的影响差异,通过考虑和不考虑指标权重对桥梁安全性评估进行了分析。结果表明,基于模糊聚类的钢筋混凝土主梁结构安全评估方法是有效性。研究方法对客观评价钢筋混凝土主梁安全性及研究钢筋混凝土桥梁安全性评估方法具有借鉴意义。

关键词(KeyWords)： 道路工程;钢筋混凝土桥梁;上部结构;安全性评估;模糊聚类;模糊贴近度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51608258);; 中国博士后特别资助项目(2015T80305);; 中国博士后面上项目(2018M642300)

作者(Author): 曹辉,王贤强,沈浩,焦峪波

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