某钢桁架桥基于静力数据的有限元模型修正

在既有桥梁的工作状态和使用安全评估中,需要建立能够精确模拟结构目前工作状态的有限元模型。文章以一座既有钢桁架桥为例,在参数灵敏度分析的基础上,以结构设计参数为修正参数,借助ANSYS的优化设计模块对该桥的有限元模型进行了基于静力数据的有限元模型修正。修正后的有限元模型的静力特性更加接近于该桥的实际结构,可以用于对全桥工作性能的评定和加固方案的设计。

The Finite-element Variable Modeling Adjustment of Steel Structured Truss Bridge Based on data of static Force

The existing safety evaluation system requires highly accurate simulated finite variable model.By using a real example,the article adjusts the static force based static force model by establishing sensitivity testing to produce guiding parameter and then uses ANSYS optimizing module.The adjusted model are more aligned with the real structure of the bridge and it is capable of conducting evaluating and strengthening designing.