基于动态有限元分析的桥梁快速评估

Rapid Evaluation of Bridges Based on Dynamic Finite Element Analysis

随着交通基础设施的大规模投资 ,既有桥梁总量迅猛增加。桥梁评估工作的效率和精度直接决定着桥梁管理系统的广度和深度。以动态有限元方法为理论基础 ,综合考虑了敏感度分析和拟合分析 ,对既有桥梁结构的变异进行了拟合 ,提出了基于动态有限元分析的桥梁快速评估方法。并以一座简支梁桥为例 ,通过模态分析 。

With the growth of built bridges, the efficiency and accuracy of bridge evaluation directly determines the extent of bridge management system, Based on the theory of dynamic finite elements and incorporated with sensitivity and fit analyses, fast evaluation of bridges is provided by fitting the structural variants of built bridges, and its feasibility is proved through modal analysis of a simple supported beam bridge.