大跨度钢箱提篮拱桥建模及动力特性分析  

Modeling and dynamic properties analysis of long span X-style box-section arch bridge

作　　者：王建军[1] 周创理 邱夏平 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]广西百色市公路局,广西百色533000 [3]中国轻工业南宁设计工程有限公司,广西南宁530000

出　　处：《广西工学院学报》2007年第2期37-40,共4页Journal of Guangxi University of Technology

基　　金：国家自然科学基金(19872020);广西科技攻关项目(桂科攻0592005-1)

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。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.

关 键 词：有限元分析 钢箱提篮连拱 动力特性 翘曲剪切变形 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]