【摘要】 以洛阳瀛洲大桥主桥为研究对象,采用ANSYS有限元程序,建立了下承式钢管混凝土系杆拱桥的空间力学计算模型,利用子空间迭代法计算了该结构的自振周期和振型,并对其模态特性进行了分析。通过计算和分析得到了一些对工程建设有益的结论。更多还原

【Abstract】 In this paper dynamic behavior of the Ying Zhou main bridge in Luoyang is studied.The finite element analysis software ANSYS is adopted to set up three-dimensional finite element model of a CFT arch bridge of the main bridge.The natural periods and modes of the CFT arch bridge are calculated by using the subspace iteration method.Meanwhile its modal characteristics are analyzed.Some useful conclusions are got by the calculation and analysis of the bridge for the engineering construction.更多还原