【摘要】 模态分析是结构动力分析的基础。目前对大跨度钢管混凝土拱桥进行模态分析主要采用非线性有限元法,本文介绍了这种方法采用的单元类型和建模方法,以丫髻沙大桥为研究对象,针对桥梁结构的实际情况进行模态分析。更多还原

【Abstract】 Modal analysis is the basis of the structural dynamical analysis, and the non - linear FEM is an approach for Modal Analysis of long - span CFST Arch Bridges. In the paper, we introduce the unit characteristics and the method of establishing a spatial calculating model, and the modal response of Ya Ji Sha Bridge regarded as the research object is calculated.更多还原