模态分析中钢筋混凝土桥墩的简化模型

Simplified Model in Modal Analysis of Reinforced Concrete Bridge Piers

利用ANSYS有限元程序,对钢筋混凝土桥墩在墩底固结情况下进行模态分析,提出了用等效均质结构代替原结构以及采用抗弯刚度为控制参数的模型简化方法,并对其合理性进行了验证,为桥梁的抗震分析提供了一种合理、有效的模型简化方案.

Through an ANSYS-based finite element modal analysis of reinforced concrete bridge piers with consolidated ends, the paper offers a reasonable and effective simplified model for the seismic analysis of bridges by the proposition and verification of model simplification methods of substituting homogeneous equivalent structures for the original structures, and of adopting the flexural rigidity as the controlling parameters.