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通过对桥梁结构动静荷载试验中有关自振频率评定标准及荷载校验系数等技术问题的讨论,分析了其不合理部分,强调了桥梁结构检算中混凝土材料真实弹性模量的重要性,进而给出了4种混凝土弹性模量的识别方法;在此基础上,利用修正后的结构有限元模型,保证了结构动、静力分析结果的可靠性,为混凝土桥梁技术状态和承载能力的合理评定提供了科学依据,保证了桥梁运营的安全性和耐久性。
By discussing technical standards about natural frequency and load factor, the paper analyzes the unreasonable parts and emphasizes the importance of the real elastic modulus of concrete in bridge structure checking. Four kinds of concrete elastic modulus identification methods are given. On this basis, the modified finite element model is used to ensure the reliability of the structural dynamic and static analysis results, which is reasonable for the technical status and bearing capacity of concrete bridges Assessment provides a scientific basis to ensure the safety and durability of the bridge operation.