基于模糊综合评价理论的钢桁架系杆拱桥安全性评估

Safety Evaluation of Steel Truss Tied Arch Bridge Using Fuzzy Comprehensive Evaluation Theory

提出一种在役桥梁安全性评估算法,确保桥梁运营安全。以浙江省某钢桁架系杆拱桥为研究对象,进行受力分析和损伤模拟,引入贴近度确定受力构件相对重要关系。采用模糊综合评价理论建立桥梁综合评估模型,得到全桥安全状态的评估。算法有效,克服了专家主观因素的影响。

A safety evaluation algorithm for in-service bridge is proposed to ensure the safety of bridge operation.By taking a steel truss tied arch bridge in Zhejiang as the research object,the stress analysis and damage simulation are carried out,and the relative importance of the force components is determined by introducing the close degree.The comprehensive bridge evaluation model is established by fuzzy comprehensive evaluation theory,and the health state of the whole bridge is obtained.The algorithm is effective and overcomes the influence of the subjective factors from the experts.