【摘要】 基于大型通用有限元软件ANSYS,利用有限元法建立了大跨度钢箱提篮连拱桥的分析模型,考虑了剪切和翘曲变形的影响,用Block-Lanczos法分析了其振动规律和动力特性,得到了大桥的振型、频率等资料数据,对大桥的动力性能做出评价,得出了一些有价值的结论,可作为同类型桥梁计算分析的参考。更多还原

【Abstract】 Based on the finite element software,ANSYS,the spatial model of a long span X-style box-section arch bridge was created.With the consideration of warping and shear deflection effect,the dynamic properties of the bridge were analyzed by the Block-Lanczos method and the data of frequencies and shapes were obtained.At last,the dynamic properties were assessed and some conclusions were obtained which can be a reference to the bridges with same style.更多还原